JP2007018243A - Monitoring system - Google Patents

Monitoring system Download PDF

Info

Publication number
JP2007018243A
JP2007018243A JP2005198908A JP2005198908A JP2007018243A JP 2007018243 A JP2007018243 A JP 2007018243A JP 2005198908 A JP2005198908 A JP 2005198908A JP 2005198908 A JP2005198908 A JP 2005198908A JP 2007018243 A JP2007018243 A JP 2007018243A
Authority
JP
Japan
Prior art keywords
monitoring
trap
monitoring device
notification information
monitored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005198908A
Other languages
Japanese (ja)
Inventor
Takamitsu Chikedera
隆光 千見寺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2005198908A priority Critical patent/JP2007018243A/en
Publication of JP2007018243A publication Critical patent/JP2007018243A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Computer And Data Communications (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitoring system which prevents notification information from being lost from devices to be monitored and improves reliability. <P>SOLUTION: A TRAP receive-only device 4 having a TRAP holding function is arranged at a prestage of a monitoring device. All TRAPs are accumulated temporarily in a TRAP receive-only device 4, and then transferred to monitoring devices (a working system monitoring device 3-0 and a standby system monitoring device 3-1). The working system monitoring device 3-0 receives and holds transmitted TRAP and uses it for monitoring a network NW. Further, a standby system monitoring device 3-1 which becomes a new working system by switching of redundancy acquires the TRAPs held by itself from TRAP receipt time in the past to the latest time from the TRAP receive-only device 4, and monitoring process is continued. Consequently, the loss of TRAPs to be issued from the devices to be monitored is eliminated and reliability of the monitoring system can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、監視装置により通信ネットワークを監視する監視システムに関する。特にこの発明は、監視装置が現用系と予備系とを備えて冗長構成をなし、プロトコルにSNMPを用いるシステムに関する。   The present invention relates to a monitoring system for monitoring a communication network by a monitoring device. In particular, the present invention relates to a system in which a monitoring apparatus includes an active system and a standby system to form a redundant configuration and uses SNMP as a protocol.

冗長構成をなす通信装置では、系切換えに伴う通信品質の劣化を防止することが重要である(例えば特許文献1を参照)。冗長構成は監視装置などにも採用されており、通信品質の劣化だけでなく系切換えに伴う種々の課題がある。
監視装置と被監視装置とのプロトコルには、再送などが無くシンプルかつ軽実装なSNMP TRAP(Simple Network Management Protocol TRAP)が使用されることが多い。このプロトコルのもとでは、監視装置は被監視装置から通知されるTRAPを拠り所としてネットワークを監視する。監視装置を冗長構成とするには汎用マシンを予備系装置に転用するのが一般的である。
In a communication device having a redundant configuration, it is important to prevent deterioration of communication quality due to system switching (see, for example, Patent Document 1). The redundant configuration is also adopted in a monitoring device and the like, and there are various problems associated with system switching as well as deterioration in communication quality.
As a protocol between the monitoring apparatus and the monitored apparatus, a simple and light implementation SNMP TRAP (Simple Network Management Protocol TRAP) is often used without retransmission. Under this protocol, the monitoring device monitors the network based on TRAP notified from the monitored device. Generally, a general-purpose machine is diverted to a standby system to make the monitoring device redundant.

ところで二重化された監視装置においては、冗長切換えに際してマシン間での機能の引継ぎや共通IPアドレス(冗長構成のマシン間で共通に使用される1つの仮想的なIPアドレス)の受け渡しなどの処理を要し、その間ある程度の時間がかかる。引継ぎが完全でない状態では監視装置はTRAPを受信できず、しかも再送の仕組みがないために受信できなかったTRAPの履歴が残らないことになる。
特開平8−307975号公報
By the way, in a redundant monitoring device, processing such as handover of functions between machines and delivery of a common IP address (one virtual IP address commonly used between redundantly configured machines) are required for redundant switching. In the meantime, it takes some time. If the takeover is not complete, the monitoring device cannot receive TRAP, and there is no TRAP history that could not be received because there is no retransmission mechanism.
JP-A-8-307975

以上のようにSNMPを用いる既存のシステムでは、現用系故障や定期点検に伴う冗長切替の際などに監視装置がTRAPを受信できず、TRAPが失われる場合がある。このため24時間連続監視が制限されたり、監視機能の信頼性が低下したりすることから何らかの対処が望まれる。
この発明は上記事情によりなされたもので、その目的は、被監視装置からの通知情報が失われることを無くし、信頼性を向上させた監視システムを提供することにある。
As described above, in the existing system using SNMP, there is a case where the monitoring apparatus cannot receive the TRAP when the active system fails or the redundant switching accompanying the periodic inspection is performed and the TRAP is lost. For this reason, since 24-hour continuous monitoring is limited or the reliability of the monitoring function is lowered, some countermeasure is desired.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a monitoring system in which notification information from a monitored device is not lost and reliability is improved.

上記目的を達成するためにこの発明の一態様によれば、現用系および予備系を備えて冗長化され、ネットワーク監視プロトコルを用いて被監視装置を監視する監視装置と、前記被監視装置と前記監視装置との通信経路の途中に設置される専用装置とを具備し、前記専用装置は、前記被監視装置から前記ネットワーク監視プロトコルのもとで発報される通知情報を受信して蓄積する手段と、前記蓄積した通知情報を前記監視装置に転送する手段とを備え、前記監視装置は、現用系として動作中に前記転送された通知情報を保持する手段と、冗長切替えにより予備系から現用系に切り替わった場合に、自装置に保持する最新の通知情報の受信時刻から現時刻までの通知情報を前記専用装置から取得する手段とを備えることを特徴とする監視システムが提供される。特に、ネットワーク監視プロトコルはSNMP(Simple Network Management Protocol)であり、通知情報はTRAPである。   In order to achieve the above object, according to one aspect of the present invention, a monitoring apparatus that is redundantly provided with an active system and a standby system and that monitors a monitored apparatus using a network monitoring protocol, the monitored apparatus, Means for receiving and storing notification information issued under the network monitoring protocol from the monitored device, and a dedicated device installed in the middle of a communication path with the monitoring device. And means for transferring the accumulated notification information to the monitoring device, the monitoring device holding the transferred notification information during operation as a working system, and a standby system from a standby system by redundant switching And a means for acquiring from the dedicated device notification information from the reception time of the latest notification information held in the device to the current time when switching to the device. There is provided. In particular, the network monitoring protocol is SNMP (Simple Network Management Protocol), and the notification information is TRAP.

このような手段を講じることにより、監視装置構成の前段に専用装置が配置される。専用装置は、監視装置を構成する汎用マシンよりも故障率の低いマシンを用いると良い。専用装置は被監視装置から発報されたTRAPを受信し、一定期間分、少なくとも監視装置の冗長切替えに要する期間のTRAPを蓄積する。その容量は被監視装置により形成されるネットワークの規模に応じて設定される。監視装置は専用装置から転送されるTRAPにより被監視装置を監視する。現用系と予備系との冗長切替えの実行中であっても、TRAPは専用装置において蓄積される。そして、予備系から新現用系に切り替わった監視装置は、ただちに専用装置に蓄積されるTRAPを取得し、処理を継続する。このようにすることで、冗長切替に伴うTRAP受信不可時間帯を無くすることができ、現用系監視装置が動作した後は、TRAP受信履歴を抜けなく確認することができる。   By taking such means, a dedicated device is arranged in the preceding stage of the monitoring device configuration. As the dedicated device, a machine having a failure rate lower than that of the general-purpose machine constituting the monitoring device may be used. The dedicated device receives the TRAP issued from the monitored device, and accumulates the TRAP for a certain period, at least during the period required for redundant switching of the monitoring device. The capacity is set according to the scale of the network formed by the monitored devices. The monitoring device monitors the monitored device by TRAP transferred from the dedicated device. Even during redundancy switching between the active system and the standby system, TRAP is stored in the dedicated device. Then, the monitoring device that has been switched from the standby system to the new working system immediately acquires the TRAP stored in the dedicated device and continues the processing. By doing so, it is possible to eliminate the TRAP reception unavailable time zone due to redundancy switching, and it is possible to confirm the TRAP reception history without omission after the active monitoring apparatus operates.

この発明によれば、被監視装置からの通知情報が失われることがなくなるので、信頼性を向上させた監視システムを提供することができる。   According to the present invention, since the notification information from the monitored device is not lost, a monitoring system with improved reliability can be provided.

図1は、この発明に係わる監視システムの実施の形態を示すシステム図である。図1において、ネットワークNWはルータ2を介して現用系監視装置3−0、予備系監視装置3−1に接続される。すなわち監視装置冗長構成例として2台冗長構成を示す。現用系監視装置3−0、予備系監視装置3−1共に、汎用マシンに監視機能およびSNMPを実装することで実現される。予備系監視装置3−1は現用系監視装置3−0の待機系として動作し、不具合が発生するとただちに冗長切替えが行われる。   FIG. 1 is a system diagram showing an embodiment of a monitoring system according to the present invention. In FIG. 1, a network NW is connected to an active monitoring device 3-0 and a standby monitoring device 3-1, via a router 2. That is, a redundant configuration of two units is shown as an example of a redundant configuration of the monitoring device. Both the active system monitoring device 3-0 and the standby system monitoring device 3-1 are realized by mounting a monitoring function and SNMP on a general-purpose machine. The standby system monitoring device 3-1 operates as a standby system for the active system monitoring device 3-0, and redundancy switching is performed as soon as a failure occurs.

現用系監視装置3−0は、ネットワークNWに属する複数の被監視装置11〜1nから通知される通知情報に基づいて各被監視装置11〜1nの動作状態やネットワークNWを監視する。監視プロトコルとしてはSNMPが代表的であり、このプロトコルにおいて各被監視装置11〜1nから発報される通知情報はTRAPと称する。   The active system monitoring device 3-0 monitors the operating state of each monitored device 11 to 1n and the network NW based on the notification information notified from the plurality of monitored devices 11 to 1n belonging to the network NW. SNMP is a typical monitoring protocol, and notification information issued from each monitored device 11 to 1n in this protocol is referred to as TRAP.

ところでこのシステムは、TRAP受信専用装置4を備える。TRAP受信専用装置4は被監視装置11〜1nと現用系監視装置3−0(予備系監視装置3−1)との通信経路の途中に設置され、要するに監視装置構成の前段に配置される。TRAP受信専用装置4は現用系監視装置3−0(予備系監視装置3−1)を構成する汎用マシンよりも故障率の低い専用機を利用する。   By the way, this system includes a TRAP reception dedicated device 4. The TRAP reception-only device 4 is installed in the middle of the communication path between the monitored devices 11 to 1n and the active system monitoring device 3-0 (standby system monitoring device 3-1). The TRAP reception dedicated device 4 uses a dedicated machine having a failure rate lower than that of the general-purpose machine constituting the active system monitoring device 3-0 (standby system monitoring device 3-1.

TRAP受信専用装置4は、被監視装置11〜1nから発報されるTRAPを、現用系監視装置3−0(予備系監視装置3−1)に達する前に受信し、蓄積する機能を有する。その容量は、少なくとも冗長切替時間中に受信する全てのTRAPを十分に蓄積可能な容量とする。さらにTRAP受信専用装置4は、一旦蓄積したTRAPを現用系監視装置3−0に転送する機能を有する。これらの機能はいずれもTRAP受信専用装置4に搭載されるソフトウェアにより実現される。   The TRAP reception-only device 4 has a function of receiving and storing TRAP issued from the monitored devices 11 to 1n before reaching the active system monitoring device 3-0 (standby system monitoring device 3-1). The capacity is a capacity capable of sufficiently storing all TRAPs received at least during the redundancy switching time. Further, the TRAP reception dedicated device 4 has a function of transferring the TRAP once accumulated to the active monitoring device 3-0. All of these functions are realized by software installed in the TRAP reception dedicated apparatus 4.

一方、現用系監視装置3−0はTRAP受信専用装置4から転送されるTRAPを受信保持する機能と、TRAP受信専用装置4から取得したTRAPをマージ(merge)する機能とを備える。すなわち現用系監視装置3−0は、TRAP受信専用装置4に一旦蓄積されたTRAPを用いてネットワークNWを監視する。図1において、例えば被監視装置11からTRAPが発報されると、このTRAPはTRAP受信専用装置4により一旦受信保持されたのち、現用系監視装置3−0に転送される。現用系監視装置3−0は、転送されたTRAPを受信したのち、一定期間分のTRAPを保持する。   On the other hand, the active monitoring apparatus 3-0 has a function of receiving and holding TRAP transferred from the TRAP reception dedicated apparatus 4, and a function of merging TRAP acquired from the TRAP reception dedicated apparatus 4. That is, the active monitoring device 3-0 monitors the network NW using the TRAP once stored in the TRAP reception dedicated device 4. In FIG. 1, for example, when TRAP is issued from the monitored apparatus 11, the TRAP is once received and held by the TRAP reception dedicated apparatus 4, and then transferred to the active monitoring apparatus 3-0. The active monitoring device 3-0 holds the TRAP for a certain period after receiving the transferred TRAP.

図2に示すように、現用系監視装置3−1に障害が生じると冗長切替が実行され、予備系監視装置3−1が新現用系としての動作を開始する。予備系監視装置3−1は、前回に現用系として動作している状態において取得したTRAPを保持しており、過去のTRAP受信時刻(保持するTRAPうち最新のものの受信時刻)から最新時刻(現時刻)までのTRAPをTRAP受信専用装置4から取得する。そうして予備系監視装置3−1は、取得したTRAPを自身が保持するTRAP履歴とマージし、その後は新たに転送されるTRAPを受信保持する。これにより予備系監視装置3−1は現用系監視装置3−0の保持するものと同じTRAPをTRAP受信専用装置4から取得することができ、データの抜けなく監視処理を継続することが可能になる。このようにすることで、現用系故障や定期点検に伴う冗長切替にてTRAP受信不可時間帯を無くすことができ、切替後はTRAP受信履歴を抜けなく確認することができる。   As shown in FIG. 2, when a failure occurs in the active system monitoring device 3-1, redundancy switching is executed, and the standby system monitoring device 3-1 starts operation as a new active system. The standby monitoring device 3-1 holds the TRAP acquired in the previous operation as the active system, and the latest time (current time) from the past TRAP reception time (the latest reception time among the TRAPs held). TRAP up to (time) is acquired from the TRAP receiving apparatus 4. The standby monitoring device 3-1 then merges the acquired TRAP with the TRAP history held by itself, and thereafter receives and holds the newly transferred TRAP. As a result, the standby monitoring device 3-1 can acquire the same TRAP as that held by the active monitoring device 3-0 from the TRAP reception dedicated device 4, and can continue the monitoring process without missing data. Become. By doing in this way, the TRAP reception impossible time zone can be eliminated by the redundant switching accompanying the working system failure or periodic inspection, and the TRAP reception history can be confirmed without omission after switching.

図3に示すように既存の監視システムは、TRAP受信専用装置4を備えていない。このため図4に示すように、TRAPは被監視装置から発報されたのち直接的に監視装置に達することになる。しかしながら冗長切替え時においてはTRAPを受信する機能が一時的に停止されるため、その間のTRAPが失われることになる。   As shown in FIG. 3, the existing monitoring system does not include the TRAP reception dedicated device 4. For this reason, as shown in FIG. 4, TRAP reaches the monitoring device directly after being issued from the monitored device. However, since the function of receiving TRAP is temporarily stopped at the time of redundancy switching, TRAP in the meantime is lost.

これに対し本実施形態では、監視装置の前段にTRAPを保持機能を有するTRAP受信専用装置4を配置し、全てのTRAPをTRAP受信専用装置4に一旦蓄積したのち、監視装置(現用系監視装置3−0、予備系監視装置3−1)に転送するようにする。現用系監視装置3−0は転送されたTRAPを受信保持しネットワークNWの監視に用いる。さらに冗長切替えにより新現用系となった予備系監視装置3−1は、自身に保持する過去のTRAP受信時刻から最新時刻までのTRAPをTRAP受信専用装置4から取得し、監視処理を継続するようにする。このようにしたので被監視装置から発報されるTRAPが失われることが無くなり、監視システムの信頼性を向上させることが可能になる。   On the other hand, in the present embodiment, the TRAP reception dedicated device 4 having the TRAP holding function is arranged in the preceding stage of the monitoring device, and after all the TRAPs are temporarily stored in the TRAP reception dedicated device 4, the monitoring device (active monitoring device) 3-0, transfer to the standby system monitoring device 3-1). The active system monitoring device 3-0 receives and holds the transferred TRAP and uses it for monitoring the network NW. Further, the standby monitoring device 3-1 that has become the new active system by redundant switching acquires the TRAP from the previous TRAP reception time to the latest time held by itself from the TRAP reception dedicated device 4, and continues the monitoring process To. Since this is done, TRAP issued from the monitored apparatus is not lost, and the reliability of the monitoring system can be improved.

なお、この発明は上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment.

この発明に係わる監視システムの実施の形態を示すシステム図。1 is a system diagram showing an embodiment of a monitoring system according to the present invention. 図1のシステムにおける冗長切替え時の動作を示す概念図。The conceptual diagram which shows the operation | movement at the time of redundant switching in the system of FIG. 既存の監視システムを示すシステム図。The system diagram which shows the existing monitoring system. 図3のシステムにおける冗長切替え時の動作を示す概念図。The conceptual diagram which shows the operation | movement at the time of redundant switching in the system of FIG.

符号の説明Explanation of symbols

11〜1n…被監視装置、2…ルータ、3−0…現用系監視装置、3−1…予備系監視装置、4…TRAP受信専用装置、NW…ネットワーク   11 to 1n: monitored device, 2 ... router, 3-0 ... active system monitoring device, 3-1 ... standby system monitoring device, 4 ... TRAP reception dedicated device, NW ... network

Claims (2)

現用系および予備系を備えて冗長化され、ネットワーク監視プロトコルを用いて被監視装置を監視する監視装置と、
前記被監視装置と前記監視装置との通信経路の途中に設置される専用装置とを具備し、
前記専用装置は、
前記被監視装置から前記ネットワーク監視プロトコルのもとで発報される通知情報を受信して蓄積する手段と、
前記蓄積した通知情報を前記監視装置に転送する手段とを備え、
前記監視装置は、
現用系として動作中に前記転送された通知情報を保持する手段と、
冗長切替えにより予備系から現用系に切り替わった場合に、自装置に保持する最新の通知情報の受信時刻から現時刻までの通知情報を前記専用装置から取得する手段とを備えることを特徴とする監視システム。
A monitoring device that is redundantly provided with an active system and a standby system and that monitors a monitored device using a network monitoring protocol;
A dedicated device installed in the middle of a communication path between the monitored device and the monitoring device;
The dedicated device is
Means for receiving and storing notification information issued under the network monitoring protocol from the monitored device;
Means for transferring the accumulated notification information to the monitoring device,
The monitoring device
Means for holding the transferred notification information during operation as an active system;
And a means for acquiring from the dedicated device notification information from the reception time of the latest notification information held in the local device to the current time when the standby system is switched to the active system by redundant switching. system.
前記ネットワーク監視プロトコルはSNMP(Simple Network Management Protocol)であり、前記通知情報はTRAPであることを特徴とする請求項1に記載の監視システム。 The monitoring system according to claim 1, wherein the network monitoring protocol is SNMP (Simple Network Management Protocol), and the notification information is TRAP.
JP2005198908A 2005-07-07 2005-07-07 Monitoring system Pending JP2007018243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005198908A JP2007018243A (en) 2005-07-07 2005-07-07 Monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005198908A JP2007018243A (en) 2005-07-07 2005-07-07 Monitoring system

Publications (1)

Publication Number Publication Date
JP2007018243A true JP2007018243A (en) 2007-01-25

Family

ID=37755367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005198908A Pending JP2007018243A (en) 2005-07-07 2005-07-07 Monitoring system

Country Status (1)

Country Link
JP (1) JP2007018243A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008077216A (en) * 2006-09-19 2008-04-03 Toshiba Corp Network monitoring method
JP2018067178A (en) * 2016-10-20 2018-04-26 株式会社東芝 Method for updating program
CN110554935A (en) * 2018-05-31 2019-12-10 阿自倍尔株式会社 Facility monitoring system and communication method in facility monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008077216A (en) * 2006-09-19 2008-04-03 Toshiba Corp Network monitoring method
JP2018067178A (en) * 2016-10-20 2018-04-26 株式会社東芝 Method for updating program
CN110554935A (en) * 2018-05-31 2019-12-10 阿自倍尔株式会社 Facility monitoring system and communication method in facility monitoring system

Similar Documents

Publication Publication Date Title
US7076696B1 (en) Providing failover assurance in a device
CN100483357C (en) Routing system and method for transparently recovering routing states after a failover or during a software upgrade
JP4682887B2 (en) Failure recovery method, node and network
JP5982842B2 (en) Computer fault monitoring program, method, and apparatus
JP5630269B2 (en) COMMUNICATION SYSTEM, COMMUNICATION DEVICE, CONTROL DEVICE, CONTROL METHOD, AND PROGRAM
JP4588262B2 (en) Suspension method in router and network
JP4407568B2 (en) Information processing system, information processing apparatus, information processing method used therefor, and program thereof
CN103748843A (en) Methods and apparatus for avoiding inter-chassis redundancy switchover to non-functional standby nodes
US8238309B1 (en) Stateful home agent recovery protocol (SHARP)
KR20150002474A (en) Methods for recovering failure in communication networks
JP2009033447A (en) Interface device, main device, and control method used for interface device
JP2007018243A (en) Monitoring system
JP2006333077A (en) Line redundancy method and relaying device to be used therein
CN105939254A (en) Method and device for switching state of VRRP (Virtual Router Redundancy Protocol) backup set
JP2008177806A (en) Packet switching network, and fault controller
JP4465300B2 (en) Redundant configuration apparatus and redundant configuration method
JP2006309637A (en) Monitoring control system
JP2009239767A (en) Ring monitoring apparatus and network system
JP2010035104A (en) Plant monitor/control system, and method of bypassing communication channel
JP5020176B2 (en) Path control method
JPWO2007096987A1 (en) Error control device
JP2006228120A (en) File updating method
CN104702422A (en) Method, device and system for realizing high availability of communication equipment
JP2008017070A (en) Network device, redundant switching method used therefor, and program thereof
JP2007074313A (en) Network redundancy control method