CN103595629A - Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network - Google Patents
Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network Download PDFInfo
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Abstract
The invention provides a rapid gateway switching method and device for hosts in the IRDP network. The method comprises that a core router regularly detect state information of gateway routers of hosts in a client network; and when the core router detects failure of a certain gateway router, the core router notifies a gateway update message to all IRDP routers which are managed by the core router, so that the corresponding IRDP router is triggered to update a gateway IP address for the host which is influenced by the failure. According to the invention, the host can be rapidly switched to an effective gateway when the present gateway has failure, so that the effectiveness of host communication can be guaranteed.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and apparatus that in a kind of IRDP network, host gateway switches fast.
Background technology
IRDP(ICMP Router Discovery Protocol, router discovery protocol) be ICMP(Internet Control Message Protocol, Internet Control Message Protocol) a expansion, it makes each router periodically from each multileaving interface, transmit an IRDP notification packet, notices the IP address of interface.Main frame is received after this IRDP notification packet, finds contiguous router address, thereby can dynamically find the IP address of default gateway router.Under the environment of a multi-router, IRDP also makes main frame can detect and correct the mistake producing due to gateway fails, can simplified network management role, and in network, realized redundant configuration.This agreement must realize being connected on the main frame of network, and has one or more routers to be directly connected on the same network segment, makes main frame can find the address of a gateway by monitoring network traffics.
In a complex network with a plurality of routers, network manager can, by the priority level of configuration address, be encouraged or not encourage user to use certain equipment as default router.A typical example is the primary and backup link of configuration, and in this case, network manager wishes that active link has higher weight.IRDP router regularly sends notification packet to the user in network, and in described notification packet, with life span parameter, subscriber's main station can be preserved the gateway address obtaining within life span scope.When primary route device breaks down, do not need to restart change default router, before life span is overtime, main frame must refresh by another notification packet receiving its gateway information.If also do not receive the notification packet of router before life span is overtime, main frame will find that message re-establishes an effective default router by use router so, or connect with the sender of the next effective routing device notification packet (height that priority ratio is previous) receiving.That is to say,
There is such defect in prior art: before life span is overtime or before receiving next effective routing device and noticing, the flow of main frame will mail to a router having lost efficacy, and causes service traffics to be interrupted.
Summary of the invention
In view of this, the invention provides a kind of method that in IRDP network, host gateway switches fast, be applied on IRDP server router, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, is used to the IP address information of the current available gateway router of main frame notice in client network, and described method comprises:
Described core router regularly detects the state information of the gateway router of each main frame in client network;
After having gateway router to lose efficacy in described core router detects the gateway router of each main frame in client network, described core router upgrades message to gateway of all IRDP router advertisements of its management, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address;
Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
The present invention also provides the device that in a kind of IRDP network, host gateway switches fast, be applied on IRDP server router, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, the IP address information that is used to the current available gateway router of main frame notice in client network, described device comprises:
Regular detecting unit, for regularly detecting the state information of the gateway router of each main frame of client network;
Message notification unit, after having gateway router to lose efficacy in the gateway router that each main frame of client network detected, gateway of all IRDP router advertisements to described core router management upgrades message, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address;
Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
The present invention also provides the householder method that in a kind of IRDP network, host gateway switches fast, be applied on the IRDP router of IRDP network, this network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, be used to main frame to notice the IP address information of current available gateway router, described method comprises:
Described IRDP router receives the gateway renewal message that described core router issues, and described gateway upgrades the IP address that message carries the gateway router of inefficacy;
Described IRDP router upgrades message to described gateway to be processed, determine described inefficacy gateway router IP address for self notice IP address time, be affected main frame renewal gateway address;
Described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
The present invention also provides the servicing unit that in a kind of IRDP network, host gateway switches fast, be applied on the IRDP router of IRDP network, this network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, be used to main frame to notice the IP address information of current available gateway router, described device comprises:
Message receiving element, the gateway renewal message issuing for receiving described core router, described gateway upgrades the IP address that message carries the gateway router of inefficacy;
Gateway updating block, processes for described gateway is upgraded to message, when the IP address of determining the gateway router of described inefficacy is the IP address of described IRDP router advertisement, for affected main frame upgrades gateway address;
Described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
Compared to existing scheme, the present invention detects the state information of gateway router in client network by timing, after having gateway router to lose efficacy in client network being detected in existing gateway router, by core router, to all IRDP router advertisement gateways of its management, upgrade messages and take that to trigger IRDP router be initiatively affected main frame renewal gateway address information, solved when gateway router lost efficacy in IRDP network the long-time problem of interrupting of host service flow.
Accompanying drawing explanation
Fig. 1 is the system architecture diagram that a kind of gateway of main frame switches fast;
Fig. 2 is the system architecture diagram that a kind of gateway of main frame switches fast;
Fig. 3 is the process chart that in one embodiment of the present invention, core router coordinates with IRDP router;
Fig. 4 is the structural representation of host gateway apparatus for fast switching in IRDP network in one embodiment of the present invention;
Fig. 5 is the hardware configuration schematic diagram of the network equipment of core router and IRDP router in one embodiment of the present invention;
Fig. 6 be in one embodiment of the present invention in IRDP network host gateway switch fast the structural representation of servicing unit.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, scheme of the present invention is described in further detail.
The invention provides method and householder method that in a kind of IRDP network, host gateway switches fast, be applied to respectively on IRDP server router and IRDP router, this network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, is used to the main frame in client network to notice current available gateway router address information.The concrete framework of this IRDP network system, refers to Fig. 1 and Fig. 2.Gateway router can be same equipment with IRDP router, by distinct interface, distinguishes, and be two in logic, be physically one; Main frame can be the main frame that only has a network interface card in addition, by an inner exchanging net, be connected with gateway router with IRDP router respectively, also can be the main frame that has polylith network interface card, by different network interface cards, be connected with gateway router with IRDP router respectively, in concrete implementation process, the main frame of usining has polylith network interface card as more excellent execution mode.In the present embodiment, concrete networking mode is not particularly limited.
From the angle of core router by, the invention provides a kind of method that in IRDP network, host gateway switches fast, from the angle of IRDP router, the invention provides the householder method that in a kind of IRDP network, host gateway switches fast.Referring to Fig. 3, core router and IRDP router engagement process are carried out following steps:
Step S401: core router regularly detects the state information of the gateway router of each main frame in client network.
Step S402: after having gateway router to lose efficacy in described core router detects the gateway router of each main frame in client network, described core router upgrades message to gateway of all IRDP router advertisements of its management take and trigger corresponding IRDP router and upgrade gateway address as influenced main frame.
Wherein, described gateway upgrades the IP address that carries the gateway router of inefficacy in message; Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address, upgrade with gateway the IRDP router that message mates.
Step S403:IRDP router receives the gateway renewal message that core router is sent.
Step S404:IRDP router upgrades message to the gateway that receives to be processed, the IP address of determining the gateway router losing efficacy for self notice IP address time, be affected main frame renewal gateway address.
Wherein, for upgrading gateway address, affected main frame is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.Its specific implementation is by having enabled accordingly to send the mode of noticing address on the interface of IRDP by IRDP router.
In the present embodiment, core router is the state of each gateway router in Sampling network in real time, when gateway router inefficacy having been detected, for example, certain network interface of gateway router causes cannot communicating by letter by this network interface because of fault, or when gateway router faults itself causes cannot communicating by letter by this gateway router, core router will get affected gateway ip address, this affected gateway ip address is defined as to the IP address of the network router of inefficacy, adding gateway to upgrades in message, and send to the IRDP router of this core router management.
When the gateway that IRDP router detection issues to core router upgrades message, will mate with the IP address of the gateway router of the inefficacy of wherein carrying, specifically refer to the interface that has enabled IRDP is mated, if the match is successful, illustrate that address that this IRDP interface is noticed comprises the IP address of this inefficacy, just can initiatively initiate gateway ip address upgrades, to trigger corresponding main frame, the IP address of this inefficacy is upgraded, make corresponding main frame in time the IP address of inefficacy to be updated to effective IP address, avoid the problem of message repeating failure.
The present embodiment, when specific implementation, core router is when the gateway ip address of inefficacy being detected, also can upgrade the IP address of carrying new available gateway router in message at gateway, so that corresponding IRDP router replaces with the IP address of the gateway router having lost efficacy the IP address of new available gateway router.
In the present embodiment, when specific implementation, when core router detects main frame in client network and has new gateway router to come into force, this core router also can upgrade message to all IRDP router advertisements second gateway of its management, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once; Wherein, the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the new gateway router coming into force.The IP address of the gateway router that the current main frame that the second gateway renewal message carries is using, can be specifically that core router is according to the situation of the gateway ip address on each IRDP router from management with it, the address of noticing on the IRDP router that need to increase gateway ip address of determining, IRDP router just can mate this second gateway renewal message like this, accordingly.
In the present embodiment, core router upgrades after message sending gateway, for guaranteeing that corresponding IRDP router can process this message timely, main frame is carried out to gateway renewal, and this core router also can be determined IRDP result.Particularly, when core router receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, core router again sends gateway and upgrades message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message, further, when core router is not received the Reply message that IRDP router returns in preset time t 1, send and trigger message to each IRDP router, triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.Core router, by above-mentioned processing, can guarantee that the gateway that corresponding IRDP can process in time upgrades message, in time affected main frame is carried out to gateway ip address renewal.
In the present embodiment, when IRDP receives the gateway renewal message of core router transmission, can from the IRDP interface enabling, determine whether this IRDP upgrades message with this gateway and mate with it by traversal, particularly, IRDP router can travel through and enable IRDP interface, when IRDP under one of them IRDP interface notices matching addresses gateway and upgrades the IP address of gateway router of the inefficacy of carrying in message, the IP address that the IP address of determining the gateway router losing efficacy is self notice.Affected main frame is upgraded to gateway address, specifically can comprise: on the IRDP interface of the IP address of the gateway router that IRDP router lost efficacy in notice matching addresses, notice affected main frame and delete the IP address of the gateway router losing efficacy, and give this main frame by the IP address notification of current available gateway router.
For ease of the understanding to technical solution of the present invention, below the implementation procedure of instantiation is elaborated.
In this example, gateway upgrades message can be designed to an icmp packet, is referred to as IRDPE message here.It is multicast mac address that (MAC) address is controlled in the object media interviews of this message, and object IP is the multicast address of all-router in network, and ICMP layer type (TYPE) Field Definition is 11, and code name (code) Field Definition is 0.
This message also comprises a design option CA(change address) field, wherein this design option CA field further comprises type type field, irdp-address field and new-address field, wherein, in irdp-address field, carry for mating the IRDP of configuration and notice address, the IP address of the gateway router that the IP address of the gateway router having lost efficacy or current main frame are using; In new-address field, carry the notice address after renewal, i.e. the IP address of the IP address of current available gateway router or the gateway router that newly comes into force.
Above-mentioned type field comprises a default mark value, IRDP router can upgrade according to the value of this default mark value the notice address of relevant IRDP interface, this default mark value comprises three kinds of values, be respectively 0, 1 and 2, when this default mark value value is that 0 expression is increased to the IP address in new-address field in IRDP notice list, and notice this address in upper IRDP notification packet once, increase gateway ip address, for example, when core router detects new gateway router and comes into force, can send such IRDPE message, IRDPE message is now exactly that the second above-mentioned gateway upgrades message, when default mark value value is that 1 expression replaces with the IP address in new-address field by the IP address in irdp-address field, revise gateway ip address, for example at core router, gateway router having been detected lost efficacy, and while having again the gateway router coming into force, can send such IRDPE message, when default mark value value is 2, represent the IP address in irdp-address field to delete, delete gateway ip address, for example, when core router detects gateway router inefficacy, can send such IRDPE message.
At core router, new gateway router being detected comes into force, for example, when gateway router has new interface to come into force, or there is new gateway router equipment to add fashionable, and when gateway router inefficacy having been detected, can obtain corresponding gateway ip address, be carried in the IRDEP message of above-mentioned design, send to each IRDP router.
To the gateway ip address of main frame being carried out to renewal process based on IRDPE message as gateway renewal message, describe below.
(1) core router, be IRDP Core Router can real-time collecting client network in gateway router effectively and fail message, the gateway ip address of inefficacy detected, or while having the gateway ip address newly coming into force, just corresponding gateway ip address can be added in to the respective field in IRDPE message, and send.
Wherein, core router specifically can detect (Bidirectional Forwarding Detection by interlock (Track), two-way converting, BFD), Network Quality Analysis (Network Quality Analyzer, NQA) etc., specific implementation process is identical with existing process or similar, does not repeat them here.
Wherein, core router can detect in real time the state of gateway router within the cycle of setting, and this cycle is conventionally short than the notice cycle of the IRDP notification packet of IRDP router.
For example, when detecting in client network, core router has after gateway router inefficacy, core router is to IRDPE message of all IRDP router advertisements of its management, the IP address that now in this IRDPE message, irdp-address field is carried the gateway router of inefficacy, the value of statistical indicant of the type field in design option CA is 2.While having a plurality of gateway routers to lose efficacy in network, a plurality of design option CA of portability field in IRDPE message, the IP address of carrying respectively the gateway router of corresponding inefficacy in irdp-address field.
Meanwhile, if when core router detects the new gateway router coming into force simultaneously, can be 1 by the value of statistical indicant of the type field in design option A, and in new-address, increase the gateway router that this newly comes into force.
In addition, when if core router only detects the new gateway router coming into force, can be 0 by the value of statistical indicant of the type field in design option A, and the IP address of the gateway router that current main frame uses is set in irdp-address field, and in new-address, increase the IP address of this gateway router newly coming into force.Wherein, the IP address that irdp-address field is definite, can be specifically that core router is according to the notice address information of the notice list on each IRDP interface of each IRDP router from managing with it, and the management strategy of self, determine to increase the IP address of this new gateway router coming into force on which IRDP interface of which IRDP router, and of noticing on this IRDP interface in list is noticed to the IP address of address in this irdp-address field.
Come into force or the gateway router that lost efficacy described here, specifically refers to an interface of gateway router, or gateway router equipment itself, and the IP address of the gateway router of correspondence, is also the IP address corresponding to the corresponding interface.
(2) IRDP router (IRDP Router) is received after IRDPE message, according to IRDP configuration information (upgrading the notice address under this interface) under the information updating corresponding interface carrying in message, after renewal, first send last (FINAL) advertising of route (Router Advertisement, RA) inform the default gateway address that main frame deletion had been lost efficacy, send IRDP notification packet, IRDP RA notices the current available gateway router address of main frame again.
Wherein, IRDP router receives after IRDPE message, can travel through the interface that enables IRDP, IRDP under interface notices the irdp-address in matching addresses IRDPE message, be that gateway ip address that interface is noticed is while comprising the IP address that this irdp-address field carries, just illustrate that this IRDP router mates this IRDP message, need to upgrade the notice address of corresponding interface.
Particularly, if type field is 0, IRDP router, the IP address in new-address field can be increased in IRDP notice list, and notice this address in upper IRDP notification packet once; If type field is 1, the address that is irdp-address by notice address replaces with new-address, need to first send and notice address is the IRDP that irdp-address and life span are 0, then sends IRDP notification packet and carry current effective notice address new-address; If message type field is 2, the address deletion that address is irdp-address will be noticed, now also will first send and notice address is the IRDP that irdp-address and life span are 0, then sends IRDP notification packet and carry current effective notice address new-address.
Wherein, under each IRDP interface of IRDP router, all have corresponding notice address, the main frame of noticing to client network can use current gateway ip address, when having gateway ip address new or that lost efficacy, just can notice address to this upgrades, simultaneously can, by send IRDP notification packet (the IP address of the gateway sending to the main frame in client network) to main frame, upgrade the gateway ip address of main frame.IRDP router is when noticing gateway ip address, the life span that can carry by control, determine whether to indicate main frame to delete corresponding gateway ip address, for example on main frame, there is gateway ip address, and receive again this gateway ip address that IRDP router sends, and life span is 0 o'clock, illustrate that IRDP router indicates this main frame to delete this gateway ip address, and life span is while being normal value, illustrate that this corresponding gateway ip address is to use, main frame in life span by 0 o'clock, determine that corresponding gateway ip address lost efficacy, the notice address that need to issue from IRDP router, select again gateway ip address.
Wherein, in described IRDPE message, when default mark value value is 1, this message is that the second corresponding and above-mentioned gateway upgrades message, and when default mark value value is 2 or 3, this message is that correspondence is upgraded message with above-mentioned gateway.
(3) after IRDP router is processed IRDPE message, also can be by returning to the mode of replying reply message, so that core router is determined whether processed this IRDPE message of IRDP router.
In practical application, IRDP Router may not receive the IRDPE message that IRDP Core Router sends due to the reason of diverse network, cause noticing address and be not modified (renewal), or because IRDP Router equipment is because busy of system has been processed a part of IRDPE message (because IRDPE message may carry a plurality of CA options, and each CA option all can need to upgrade by a corresponding gateway ip address, and also may there is the IRDP interface enabling in a large number in same IRDP Router), or, IRDP Core Router may not receive the Reply message that IRDP Router sends because of network reason yet.Therefore the Reply message that, IRDP Core Router need to send by IRDP router avoids IRDP router untreated or handle IRDPE message.
Particularly, IRDP router is finished dealing with after the IRDPE message from core router receiving, and IRDP router will be carried at Reply message response to core router to the result of above-mentioned IRDPE message.A kind of preferred embodiment in, Reply message also can be designed to an icmp packet, identical with IRDPE message format, target MAC (Media Access Control) address is the MAC Address of core router, object IP address is the IP address of core router, ICMP layer TPYE Field Definition is 12, design option CAR(change address Result) field further comprises the IRDP interface field matching, irdp-address field and new-address field.The IRDP interface field wherein matching is for depositing the IRDP interface matching; Irdp-address field is for depositing the notice address matching, and new-address field is for depositing the notice address after renewal, so that core router is determined correct IRDPE message is processed of IRDP router.
When core router receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, core router again sends gateway and upgrades message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message.When each IRDP router finishes to IRDPE message, all can process it, mate, determine from the notice address that whether has the interface that enables IRDP with it and comprise the IP address in the irdp-address of the RA in IRDPE message, and can after processing, return to corresponding message, and, if mate IRDPE message, can in IRDP interface field, not add any interface, if coupling, adds corresponding content in the respective field in Reply message; Meanwhile, if IRDP router does not mate IRDPE message, also can send Reply message.
For example, the IRDP interface quantity matching in IRDP interface field in this Reply message is for empty, or yet the gateway router IRDP router that core router has been noticed two inefficacies only matches one, now may be because the processing of IRDP router section interface error causes, so sending gateway again, core router upgrades message, until all IRDP interfaces of IRDP router are all correctly processed IRDPE message, be that the IP number of addresses of the IRDP interface quantity matching in the Reply message of IRDP router response and the gateway router having lost efficacy carrying in described gateway renewal message is when identical, stop sending IRDPE message.
When core router is not received the Reply message that IRDP router returns in preset time t 1, can send and trigger message to each IRDP router; This triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.Like this, can guarantee that IRDP router can return to the Reply message after IRDPE message is processed in time.
Particularly, when core route is not received the Reply of IRDP router response in predetermined time T1, may be now that IRDP router is because the reason of diverse network is not received the IRDPE message that core router is sent, causing noticing address is not modified, or because IRDP router is because busy of system has been processed a part of IRDP interface, the IRDPE message from core router of not finishing dealing with and receiving, may be core router receive the Reply message that IRDP router is sent because of network reason yet, so sending, core router triggers message to IRDP router, a kind of preferred embodiment in, the form that triggers message is identical with IRDPE message, difference is only that code Field Definition is 1, represent just test packet, the configuration parameter of the IRDP interface of unactual change IRDP router, but can trigger IRDP router and send Reply message.When IRDP router is received after the triggering message that described core router sends, the current result to described IRDPE message is carried at and in Reply message, sends to described core router, now IRDP router sends in the Reply message of core router and may not carry correct result, and core router receives that this Reply message checks with this correctness that each IRDP interface of IRDP router is processed IRDPE message.If still process mistake, core router sends IRDPE message again, until the Reply message of IRDP router response carries correct information.Wherein predetermined time value T1 does not specifically limit in the present invention program, and in concrete enforcement, those skilled in the art can be set to integral multiple or other values in IRDP advertising of route cycle as the case may be.
Please refer to Fig. 4, the present invention also provides device 60 corresponding to method that in a kind of and above-mentioned a kind of IRDP network, host gateway switches fast, be applied on IRDP server router, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, is used to the IP address information of the current available gateway router of main frame notice in client network.This device 60 specifically can comprise:
Regular detecting unit 61: for regularly detecting the state information of the gateway router of each main frame of client network;
Message notification unit 62: after having gateway router to lose efficacy in the gateway router when each main frame of client network being detected, gateway of all IRDP router advertisements to described core router management upgrades message, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address.
Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
The specific implementation process of the device 60 that the embodiment of the present invention provides can, referring to the explanation of said method embodiment, not repeat them here.
In said apparatus 60, described gateway upgrades the IP address that message also carries new available gateway router, so that the IRDP router of described correspondence replaces with the IP address of the described gateway router having lost efficacy the IP address of described new available gateway router;
In said apparatus 60, described message notification unit 62 further can be used for when regular detecting unit detects main frame in client network and has new gateway router to come into force, all IRDP router advertisements the second gateway to described core router management upgrades message, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once; Wherein, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the gateway router coming into force.
As shown in Figure 4, said apparatus 60 also can comprise support Unit 63, for when described core router, receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, again send described gateway and upgrade message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message, and when not receiving the Reply message that IRDP router returns in preset time t 1 when described core router, send and trigger message to each IRDP router, described triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.
Referring to Fig. 5, the device corresponding with host gateway fast switch over method in above-mentioned a kind of IRDP network that the present embodiment provides, specifically also can realize by the hardware shown in Fig. 5, particularly, controller in Fig. 5 (CPU) is connected with memory and other hardware, wherein, deposited program or instruction in memory, CPU can be by program or instruction in read memory, carry out corresponding operation, other hardware, can be specifically communication interface etc., can receive or send message.
Particularly, CPU, by program or instruction in read memory, can carry out following operation:
CPU is by fetch program or instruction, regularly detect the state information of the gateway router of each main frame in client network, after having gateway router to lose efficacy in client network being detected in the gateway router of each main frame, gateway of all IRDP router advertisements to its management upgrades message, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address.Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
CPU is by fetch program or instruction, can upgrade the IP address that also carries new available gateway router in message at gateway, so that the IRDP router of described correspondence replaces with the IP address of the described gateway router having lost efficacy the IP address of described new available gateway router.
CPU is by fetch program or instruction, when also can be used for main frame in client network being detected and having new gateway router to come into force, all IRDP router advertisements the second gateway to its management upgrades message, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once; Wherein, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the new gateway router coming into force.
CPU is by fetch program or instruction, while also can be used for having new gateway router to come into force in client network being detected, all IRDP router advertisements the second gateway to management upgrades message, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once;
CPU is by fetch program or instruction, also can be used for when receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, again send described gateway and upgrade message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message,
And for when not receiving the Reply message that IRDP router returns in preset time t 1, send and trigger message to each IRDP router; Described triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.
Please refer to Fig. 6, the present invention also provides device 70 corresponding to householder method that in a kind of and above-mentioned a kind of IRDP network, host gateway switches fast, be applied on the IRDP router of IRDP network, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, is used to the IP address information of the current available gateway router of main frame notice in client network.This device comprises:
Wherein, described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
The specific implementation process of the device 70 that the embodiment of the present invention provides can, referring to the explanation of said method embodiment, not repeat them here.
In said apparatus 70,72 pairs of described gateways of described gateway updating block upgrade message to be processed, specifically can comprise: traversal enables IRDP interface, when IRDP under one of them IRDP interface notices gateway described in matching addresses and upgrades the IP address of gateway router of the inefficacy of carrying in message, the IP address that the IP address of determining the gateway router of described inefficacy is self notice;
Correspondingly, described gateway updating block 72 is that affected main frame upgrades gateway address, specifically can comprise: on the IRDP interface of IP address of noticing the gateway router losing efficacy described in matching addresses, notice affected main frame and delete the IP address of the gateway router of described inefficacy, and give this main frame by the IP address notification of described current available gateway router.
In said apparatus 70, described message receiving element 71 also can be used for receiving the second gateway renewal message that described core router issues, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the gateway router coming into force;
Described gateway updating block 72 also can be used for that described the second gateway is upgraded to message to be processed, the IP address of determining the gateway router that described current main frame is using for self notice IP address time, the IP address of the gateway router coming into force is increased to IRDP and notices in list, and notice this address in upper IRDP notification packet once.
In said apparatus 70, described gateway updating block 72 also can be further used for described IRDP router and finish dealing with after described gateway renewal message, returns to Reply message to core router; The information of carrying in described Reply message is in described IRDP router, to mate described gateway to upgrade message IRDP interface;
And for described IRDP router after receiving the triggering message that described core router sends, the current result that described gateway is upgraded to message is carried at and in Reply message, sends to described core router.
Device corresponding to the householder method of switching fast with host gateway in above-mentioned a kind of IRDP network that the present embodiment provides, specifically also can realize by the hardware shown in Fig. 5, particularly, the controller in Fig. 5 (CPU) is connected with memory and other hardware, wherein, program or instruction in memory, have been deposited, CPU can, by program or instruction in read memory, carry out operation accordingly, other hardware, can be specifically communication interface etc., can receive or send message.
Particularly, CPU, by program or instruction in read memory, can carry out following operation:
CPU, by fetch program or instruction, receives the gateway renewal message that described core router issues, and described gateway upgrades the IP address that message carries the gateway router of inefficacy;
CPU by fetch program or instruction, upgrades message to described gateway and processes, determine described inefficacy gateway router IP address for self notice IP address time, be affected main frame renewal gateway address; Described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
CPU, by fetch program or instruction, upgrades message to described gateway and processes, and specifically can comprise:
Described IRDP router traversal enables IRDP interface, when IRDP under one of them IRDP interface notices gateway described in matching addresses and upgrades the IP address of gateway router of the inefficacy of carrying in message, the IP address that the IP address of determining the gateway router of described inefficacy is self notice;
Described is that affected main frame upgrades gateway address, specifically can comprise:
Described IRDP router is on the IRDP interface of the IP address of the gateway router losing efficacy described in notice matching addresses, notice affected main frame and delete the IP address of the gateway router of described inefficacy, and give this main frame by the IP address notification of described current available gateway router.
CPU is by fetch program or instruction, also can be used for receiving the second gateway renewal message that described core router issues, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the new gateway router coming into force; And for being upgraded to message, processes described the second gateway, the IP address of determining the gateway router that described current main frame is using for self notice IP address time, the IP address of the gateway router coming into force is increased to IRDP and notices in list, and notice this address in upper IRDP notification packet once.
CPU is by fetch program or instruction, and the described gateway that also can be used for finishing dealing with upgrades after message, returns to Reply message to core router; The information of carrying in described Reply message is in described IRDP router, to mate described gateway to upgrade message IRDP interface; And for after receiving the triggering message that described core router sends, the current result that described gateway is upgraded to message is carried at and in Reply message, sends to described core router.
It will be appreciated by those skilled in the art that the unit in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.A unit can be merged in the unit of above-described embodiment, also can further split into a plurality of submodules.Foregoing invention embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (16)
1. the method that in an IRDP network, host gateway switches fast, be applied on IRDP server router, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, the IP address information that is used to the current available gateway router of main frame notice in client network, is characterized in that, described method comprises:
Described core router regularly detects the state information of the gateway router of each main frame in client network;
After having gateway router to lose efficacy in described core router detects the gateway router of each main frame in client network, described core router upgrades message to gateway of all IRDP router advertisements of its management, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address;
Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
2. the method for claim 1, it is characterized in that, described gateway upgrades the IP address that message also carries new available gateway router, so that the IRDP router of described correspondence replaces with the IP address of the described gateway router having lost efficacy the IP address of described new available gateway router.
3. method according to claim 1, is characterized in that, also comprises:
When described core router detects main frame in client network and has new gateway router to come into force, described core router upgrades message to all IRDP router advertisements second gateway of its management, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once;
Wherein, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the new gateway router coming into force.
4. method as claimed in claim 1 or 2, is characterized in that, described method further comprises:
When described core router receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, described core router again sends described gateway and upgrades message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message,
When described core router is not received the Reply message that IRDP router returns in preset time t 1, send and trigger message to each IRDP router; Described triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.
5. the device that in an IRDP network, host gateway switches fast, be applied on IRDP server router, this IRDP network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, the IP address information that is used to the current available gateway router of main frame notice in client network, is characterized in that, described device comprises:
Regular detecting unit, for regularly detecting the state information of the gateway router of each main frame of client network;
Message notification unit, after having gateway router to lose efficacy in the gateway router that each main frame of client network detected, gateway of all IRDP router advertisements to described core router management upgrades message, take and triggers corresponding IRDP router as affected main frame renewal gateway ip address;
Wherein, described gateway upgrades the IP address that message carries the gateway router of inefficacy; The IRDP router of described correspondence comprises the IPRD router of IP address of the gateway router of this inefficacy for noticing address.
6. device as claimed in claim 5, it is characterized in that, described gateway upgrades the IP address that message also carries new available gateway router, so that the IRDP router of described correspondence replaces with the IP address of the described gateway router having lost efficacy the IP address of described new available gateway router.
7. device according to claim 5, is characterized in that,
Described message notification unit, be further used for when regular detecting unit detects main frame in client network and has new gateway router to come into force, all IRDP router advertisements the second gateway to described core router management upgrades message, to trigger corresponding IRDP router, the IP address of the gateway router coming into force is increased in IRDP notice list, and notices this address in upper IRDP notification packet once;
Wherein, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the gateway router coming into force.
8. the device as described in claim 5 or 6, is characterized in that, described device also comprises:
Support Unit, for when described core router, receive that each IRDP router returns reply Reply message time, judge when information that Reply message carries is incorrect, again send described gateway and upgrade message, until the information of carrying in the Reply message receiving is correct, the information that wherein Reply message carries comprises the interface of the IRDP mating with gateway renewal message, what the information that Reply message carries was correctly carried in the Reply message for each IRDP reaction upgrades the quantity of the interface of the IRDP that message mates with gateway, equal the quantity of IP address that gateway upgrades the gateway router of the inefficacy of carrying in message,
And when not receiving the Reply message that IRDP router returns in preset time t 1 when described core router, send and trigger message to each IRDP router; Described triggering message is used for triggering each IRDP router and initiatively returns to Reply message to core router.
9. the householder method that in an IRDP network, host gateway switches fast, be applied on the IRDP router of IRDP network, this network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, be used to main frame to notice the IP address information of current available gateway router, it is characterized in that, described method comprises:
Described IRDP router receives the gateway renewal message that described core router issues, and described gateway upgrades the IP address that message carries the gateway router of inefficacy;
Described IRDP router upgrades message to described gateway to be processed, determine described inefficacy gateway router IP address for self notice IP address time, be affected main frame renewal gateway address;
Described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
10. method as claimed in claim 9, is characterized in that, described IRDP router upgrades message to described gateway to be processed, and specifically comprises:
Described IRDP router traversal enables IRDP interface, when IRDP under one of them IRDP interface notices gateway described in matching addresses and upgrades the IP address of gateway router of the inefficacy of carrying in message, the IP address that the IP address of determining the gateway router of described inefficacy is self notice;
Described is that affected main frame upgrades gateway address, specifically comprises:
Described IRDP router is on the IRDP interface of the IP address of the gateway router losing efficacy described in notice matching addresses, notice affected main frame and delete the IP address of the gateway router of described inefficacy, and give this main frame by the IP address notification of described current available gateway router.
11. methods as claimed in claim 9, is characterized in that, also comprise:
Described IRDP router receives the second gateway that described core router issues and upgrades message, and described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the new gateway router coming into force;
Described IRDP router upgrades message to described the second gateway to be processed, the IP address of determining the gateway router that described current main frame is using for self notice IP address time, the IP address of the gateway router coming into force is increased to IRDP and notices in list, and notice this address in upper IRDP notification packet once.
12. methods as claimed in claim 9, is characterized in that, described method further comprises:
Described IRDP router is finished dealing with after described gateway renewal message, returns to Reply message to core router; The information of carrying in described Reply message is in described IRDP router, to mate described gateway to upgrade message IRDP interface;
Described IRDP router, after receiving the triggering message that described core router sends, is carried at the current result that described gateway is upgraded to message in Reply message, to send to described core router.
The servicing unit that in 13. 1 kinds of IRDP networks, host gateway switches fast, be applied on the IRDP router of IRDP network, this network comprises core router and IRDP router, described core router is used for managing the IRDP of lower floor router, described IRDP router is the router of operation IRDP agreement, be used to main frame to notice the IP address information of current available gateway router, it is characterized in that, described device comprises:
Message receiving element, the gateway renewal message issuing for receiving described core router, described gateway upgrades the IP address that message carries the gateway router of inefficacy;
Gateway updating block, processes for described gateway is upgraded to message, when the IP address of determining the gateway router of described inefficacy is the IP address of described IRDP router advertisement, for affected main frame upgrades gateway address;
Described is that affected main frame renewal gateway address is specially: notice the IP address that influenced main frame is deleted the gateway router having lost efficacy, then give this main frame by the IP address notification of current available gateway router.
14. devices as claimed in claim 13, it is characterized in that, described gateway updating block upgrades message to described gateway to be processed, specifically comprise: traversal enables IRDP interface, when IRDP under one of them IRDP interface notices gateway described in matching addresses and upgrades the IP address of gateway router of the inefficacy of carrying in message, the IP address of determining the gateway router of described inefficacy is the IP address of described IRDP router advertisement;
Described gateway updating block is that affected main frame upgrades gateway address, specifically comprise: on the IRDP interface of IP address of noticing the gateway router losing efficacy described in matching addresses, notice affected main frame and delete the IP address of the gateway router of described inefficacy, and give this main frame by the IP address notification of described current available gateway router.
15. devices as claimed in claim 13, it is characterized in that, the second gateway renewal message that described message receiving element also issues for receiving described core router, described the second gateway upgrades the IP address that message carries the gateway router that current main frame using, and the IP address of the gateway router coming into force;
Described gateway updating block is also processed for described the second gateway is upgraded to message, when the IP address of determining the gateway router that described current main frame is using is the IP address of described IRDP router advertisement, the IP address of the gateway router coming into force is increased to IRDP and notices in list, and notice this address in upper IRDP notification packet once.
16. devices as claimed in claim 13, is characterized in that, described gateway updating block is further used for described IRDP router and finishes dealing with after described gateway renewal message, returns to Reply message to core router; The information of carrying in described Reply message is in described IRDP router, to mate described gateway to upgrade message IRDP interface;
And for described IRDP router after receiving the triggering message that described core router sends, the current result that described gateway is upgraded to message is carried at and in Reply message, sends to described core router.
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