CN104579853A - Method for network testing of server cluster system - Google Patents
Method for network testing of server cluster system Download PDFInfo
- Publication number
- CN104579853A CN104579853A CN201510073107.3A CN201510073107A CN104579853A CN 104579853 A CN104579853 A CN 104579853A CN 201510073107 A CN201510073107 A CN 201510073107A CN 104579853 A CN104579853 A CN 104579853A
- Authority
- CN
- China
- Prior art keywords
- node
- test
- ssh
- root
- server cluster
- 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
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method for network testing of a server cluster system, belonging to the field of network testing. The method comprises the following steps: (1) establishing a testing environment; (2) testing bandwidth; (3) testing stability; and (4) collecting results and comparing. By virtue of the method, the test of the network bandwidth and the stability of a server cluster is realized, and whether the performance and the reliability of a network system meet the application or not is evaluated through a method for binding cpu fixed thread and oppositely transmitting nodes by groups, so that the testing efficiency is improved, manpower resources are saved and the quality of products is guaranteed.
Description
Technical field
The present invention discloses a kind of method for network test, belongs to network test field, specifically a kind of method for server cluster system network test.
Background technology
Server cluster is exactly that one group of separate server is by sharing memory space, relying on network to intercom mutually, for client provides a kind of technology of high-performance and high-reliability service in brief.Once install on the server and run Cluster Service, this server can add troops.Clustered operation can reduce Single Point of Faliure quantity, and achieves the high availability of clustered resource.Group system can solve software systems problem, and the application of a server is out of service, and other associated server will take over this application, and need not comprehend what application reason out of service is.Group system can solve the out-of-work situation of application system that human error causes, and because cluster monitors application, therefore other associated server will take over this application.In the face of the plurality of advantages of group system, the develop rapidly of its too busy to get away the Internet brings the speed of Internet traffic and this key factor of lifting of stability, therefore the network required for server apparatus should provide enough bandwidth, also will keep very high stability.So the network test carrying out the network bandwidth and stability for server cluster system is necessary.So-called bandwidth, be the abbreviation of " frequency bandwidth ", the bandwidth in network refers to the amount of information flowing to the other end at the appointed time from one end, i.e. data transmission rate.Bandwidth has two kinds of basic application to analog signal and digital signal, and said bandwidth all refers to digital signal in this article.And network stabilization mainly refers to that communication keeps unimpeded at any time, there will not be sudden network congestion, suspension reconnects.And related network device continues to run without interruption, and performance does not change.Wherein the performance of network is embodied in bandwidth, stability is embodied on bandwidth fluctuation, the invention provides a kind of method for server cluster system network test, whole test process is that test environment is built, bandwidth test, stability test, collection forms with a few part of contrast, mainly realized the network bandwidth of server cluster and the system of stability assessment by the test program of linux bash language compilation, thread is fixed by being tied to cpu, node grouping is to methods such as biographies, whether the Performance And Reliability of critic network system meets application, improve testing efficiency, save human resources, ensure product quality.
Summary of the invention
The network that the present invention is directed to server cluster equipment requirement should provide enough bandwidth, also very high stability to be kept, therefore the problem that the network of cluster server is tested is needed, a kind of method for server cluster system network test is provided, realize the system to the network bandwidth and stability assessment, by closing irqbalance service, being tied to cpu and fixing thread, node grouping to methods such as biographies, whether the Performance And Reliability of critic network system meets application, improve testing efficiency, save human resources, ensure product quality.
The concrete scheme that the present invention proposes is:
For a method for server cluster system network test, concrete steps are:
1. test environment is built: installing operating system; Configuration network, between bag card node, ping leads to mutually; The configuration main and subordinate node of SSH;
2. bandwidth test: under testing tool being copied to each node/root/ of server cluster, test script, to the grouping of rack interior joint, and does biography, binds netserver end and client process on the fixing thread of cpu in test;
3. stability test: the system choosing a node in server cluster is in menu bar after the carriage return of input system order line, ping order is inputted in input frame, specify the server accepting data outside a server cluster, send packet, send certain hour;
4. collection and contrast: for bandwidth test by each for server cluster node /{ biosserail}/file copies out opt/ $, checks information, is confirmed whether the phenomenon that network link bandwidth is low; For stability test, input viewing command, according to the display data under test node system, checks whether network is stablized.
Described step 2. before also comprise preparation before test, comprise IPMI service of opening, clear BMC record log, read hard disk SN and thermograph.
Described step 1. in installing operating system be PXE bulking system, to be the configuration main and subordinate node process of linux, SSH be OS:
Host node mn01: log in root user, runs ssh-keygen – t dsa; Twice carriage return is struck, generation/root/.ssh/id_dsa and/root/.ssh/id_dsa.pub when pointing out input passphase;
From node cn01: log in root user, run ssh-keygen – t dsa, then on mn01, run scp/root/.ssh/id_dsa.pub cn01:/root/.ssh/authorized_keys2,
On cn01 /root/.ssh catalogue under run cat id_dsa.pub >> authorized_keys2, rerun scp authorized_keys2 cn02:/root/.ssh/;
From node cn02: run cat id_dsa.pub >> authorized_keys2 under/root/.ssh catalogue, rerun scp authorized_keys2 cn03:/root/.ssh/;
Residue is from node: repeat above step, last node generates complete authorized_keys2 file, under then authorized_keys2 file scp order being copied to all node/root/.ssh/, ssh has configured.
Described step 2. in, testing tool netperf is selected to carry out bandwidth test, under being copied to each node/root/ of server cluster, test script is divided into one group between two to rack interior joint automatically, and be netperf to biography, bind in test netserver end and netperf client process on the fixing thread of cpu.
Described step 3. in also comprise to input frame ipconfig/all, check the ip address of test node, subnet mask, dns server, default gateway, then the gateway of ping test node, check that whether router normal.
Described step 4. in each node of server cluster /{ biosserail}/file copies out opt/ $, the information of checking comprises snmp statistics, whether result data, ethtool.log, sel.log, message system log have the situation that network link bandwidth is low.
Usefulness of the present invention is: the whole test process of the present invention is that test environment is built, bandwidth test, stability test, collection and a few part of contrast form, mainly by the test program of linux bash language compilation, realize the network bandwidth of server cluster and the system of stability assessment, thread, node grouping is fixed to methods such as biographies by being tied to cpu, whether the Performance And Reliability of critic network system meets application, improve testing efficiency, save human resources, ensure product quality.
Embodiment
Test environment is built part and is illustrated:
Operating system installation: select PXE bulking system, OS is linux, for Redhat 6;
Configuration network: IP mode can select dhcp or static, as long as be the same network segment, between node, mutual ping leads to, for static;
The configuration of SSH:
Host node mn01: log in root user, runs ssh-keygen – t dsa, and object creates .ssh catalogue under/root; Strike twice carriage return when pointing out input passphase, this will generate/root/.ssh/id_dsa and/root/.ssh/id_dsa.pub
From node cn01: log in root user, run ssh-keygen – t dsa, then on mn01, scp/root/.ssh/id_dsa.pub cn01:/root/.ssh/authorized_keys2 is run, on cn01 /root/.ssh catalogue under run cat id_dsa.pub >> authorized_keys2, rerun scp authorized_keys2 cn02:/root/.ssh/
From node cn02: run cat id_dsa.pub >> authorized_keys2 under/root/.ssh catalogue, rerun scp authorized_keys2 cn03:/root/.ssh/
Residue is from node: node repeats above step below, in the end on a node by authorized_keys2 file complete for generation one, then, under authorized_keys2 file scp order being copied to all node/root/.ssh/, ssh has configured
Preparation before test:
Comprise the log of IPMI service of opening, clearly BMC record in script pretest.sh, read the parts such as hard disk SN and tempreature, code is as follows:
#!/bin/bash
/sbin/service ipmi start
/usr/bin/ipmitool chassis identify
echo ".......get bmc log......."
/usr/bin/ipmitool sel list |tee /root/sel.txt
/usr/bin/ipmitool sel clear
echo ".......OS message clear......"
for i in {01..32};do echo ".......cu$i.......";ssh cu$i echo “ ”>/var/log/message; done
Bandwidth test part illustrates:
Testing tool uses netperf-2.4.5, under copying compressed package netperf-2.4.5.tar.gz to each node/root/ before test; Rack interior joint is divided into one group between two by test script automatically, is netperf to biography, bind in test netserver end and netperf client process on the fixing thread of cpu, concrete scripted code is as follows:
#!/bin/bash
biosserial=`/usr/sbin/dmidecode -t 1| grep -A5 -i "System information" | awk ' /Serial/{print$3}'`
/sbin/service cpuspeed start
/sbin/service irqbalance stop
pkill netperf
pkill netserver
mkdir /opt/$biosserial
/usr/bin/which netperf
if [ $? = 1 ];then
cd /root/;tar -zxvf netperf-2.4.5.tar.gz;cd netperf-2.4.5;./configure;make;make install
fi
cc=`/sbin/ifconfig xgbe0 | sed --quiet '/inet addr:/ s/inet addr://pg' | awk -F" " '{print $1}' |awk -F"." '{print $4}'`
if [ $cc -lt 10 ] ;then
cc=0$cc
fi
cc=`echo $nodeall |awk -v tt=$cc '{for(i=1;i<=NF;i++){if($i==tt) print i}}'`
if [ ` expr $cc % 2 ` == 1 ] ;then
ip=$(($cc+1))
else
ip=$(($cc-1))
fi
ip1=`echo $nodeall |awk -v cc=$ip '{print $cc}'`
taskset -c 2 /usr/local/bin/netserver -p 12888
taskset -pc 2 $!
taskset -c 7 /usr/local/bin/netserver -p 12891
taskset -pc 7 $!
echo --- Netperf Connect to m$ip1
while [ "`/usr/bin/nmap m$ip1 -p 12888 |grep 12888 |awk '{print $2}'`" != "open" ]
do
sleep 5
done
while [ "`/usr/bin/nmap m$ip1 -p 12891 |grep 12891 |awk '{print $2}'`" != "open" ]
do
sleep 5
done
taskset -c 5 /usr/local/bin/netperf -H m$ip1 -l 14400 -p 12888 >/opt/${biosserial}/netperf21 &
taskset -pc 5 $!
taskset -c 6 /usr/local/bin/netperf -H m$ip1 -l 14400 -p 12891 >/opt/${biosserial}/netperf22
taskset -pc 6 $!
/sbin/ethtool -S xgbe1 |sed -e 's/ //g' -e 's/:/ =/g' >>/opt/${biosserial}/ethtool.log
/bin/cp -f /proc/net/snmp /opt/${biosserail}/
Stability test: after the system choosing a node in server cluster inputs the carriage return of Linux system order line in menu bar, in input frame, input ping www.*** .com-t order, representative is specified and is sent packet to Baidu server, sends certain hour, can more than 1min; Ipconfig/all can also be inputted in input frame, check the ip address of test node, subnet mask, dns server, default gateway, then the gateway of ping test node, check that whether router is normal;
Collection and contrast
By each node /{ biosserail}/file copies out opt/ $, check whether snmp statistics, netperf result data, ethtool.log, sel.log, message system log etc. have the anomalies such as network link bandwidth is low, unstable; For stability test, input viewing command, according to the display data under test node system, checks whether network is stablized.
Claims (6)
1., for a method for server cluster system network test, it is characterized in that concrete steps are:
1. test environment is built: installing operating system; Configuration network, between bag card node, ping leads to mutually; The configuration main and subordinate node of SSH;
2. bandwidth test: under testing tool being copied to each node/root/ of server cluster, test script, to the grouping of rack interior joint, and does biography, binds netserver end and client process on the fixing thread of cpu in test;
3. stability test: the system choosing a node in server cluster is in menu bar after the carriage return of input system order line, ping order is inputted in input frame, specify the server accepting data outside a server cluster, send packet, send certain hour;
4. collection and contrast: for bandwidth test by each for server cluster node /{ biosserail}/file copies out opt/ $, checks information, is confirmed whether the phenomenon that network link bandwidth is low; For stability test, input viewing command, according to the display data under test node system, checks whether network is stablized.
2. a kind of method for server cluster system network test according to claim 1, is characterized in that also comprising the front preparation of test before described step 2., comprises log, reading hard disk SN and the thermograph of IPMI service of opening, clearly BMC record.
3. a kind of method for server cluster system network test according to claim 2, it is characterized in that installing operating system is PXE bulking system during described step is 1., to be the configuration main and subordinate node process of linux, SSH be OS:
Host node mn01: log in root user, runs ssh-keygen – t dsa; Twice carriage return is struck, generation/root/.ssh/id_dsa and/root/.ssh/id_dsa.pub when pointing out input passphase;
From node cn01: log in root user, run ssh-keygen – t dsa, then on mn01, run scp/root/.ssh/id_dsa.pub cn01:/root/.ssh/authorized_keys2,
On cn01 /root/.ssh catalogue under run cat id_dsa.pub >> authorized_keys2, rerun scp authorized_keys2 cn02:/root/.ssh/;
From node cn02: run cat id_dsa.pub >> authorized_keys2 under/root/.ssh catalogue, rerun scp authorized_keys2 cn03:/root/.ssh/;
Residue is from node: repeat above step, last node generates complete authorized_keys2 file, under then authorized_keys2 file scp order being copied to all node/root/.ssh/, ssh has configured.
4. a kind of method for server cluster system network test according to any one of claim 1-3, in it is characterized in that described step 2., testing tool netperf is selected to carry out bandwidth test, under being copied to each node/root/ of server cluster, test script is divided into one group between two to rack interior joint automatically, and be netperf to biography, bind in test netserver end and netperf client process on the fixing thread of cpu.
5. a kind of method for server cluster system network test according to claim 4, it is characterized in that also comprising to input frame ipconfig/all during described step 3., check the ip address of test node, subnet mask, dns server, default gateway, then the gateway of ping test node, check that whether router is normal.
6. a kind of method for server cluster system network test according to claim 5, it is characterized in that described step 4. in each node of server cluster /{ biosserail}/file copies out opt/ $, the information of checking comprises snmp statistics, whether result data, ethtool.log, sel.log, message system log have the situation that network link bandwidth is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073107.3A CN104579853A (en) | 2015-02-10 | 2015-02-10 | Method for network testing of server cluster system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073107.3A CN104579853A (en) | 2015-02-10 | 2015-02-10 | Method for network testing of server cluster system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104579853A true CN104579853A (en) | 2015-04-29 |
Family
ID=53095117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510073107.3A Pending CN104579853A (en) | 2015-02-10 | 2015-02-10 | Method for network testing of server cluster system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104579853A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639402A (en) * | 2015-03-05 | 2015-05-20 | 浪潮电子信息产业股份有限公司 | Method for server cluster system network test |
| CN104850480A (en) * | 2015-05-18 | 2015-08-19 | 曙光信息产业(北京)有限公司 | Method and device for testing performance of hard disk of high-density storage server |
| CN105119772A (en) * | 2015-07-23 | 2015-12-02 | 浪潮电子信息产业股份有限公司 | IPMI function testing method of C/S structure |
| CN105243012A (en) * | 2015-09-11 | 2016-01-13 | 浪潮电子信息产业股份有限公司 | Linux based cluster network performance evaluating method |
| CN105243017A (en) * | 2015-10-20 | 2016-01-13 | 上海斐讯数据通信技术有限公司 | Test method and system capable of carrying out login authentication on the basis of SSH (Secure Shell) protocol |
| CN105404573A (en) * | 2015-12-11 | 2016-03-16 | 浪潮电子信息产业股份有限公司 | Multi-node deployment system pressure test method for SmartRack |
| CN105471675A (en) * | 2015-11-20 | 2016-04-06 | 浪潮电子信息产业股份有限公司 | Method and system of testing nodes in batches |
| CN105740152A (en) * | 2016-02-04 | 2016-07-06 | 浪潮电子信息产业股份有限公司 | Multi-node batched deployment system stress test method |
| CN105808433A (en) * | 2016-03-04 | 2016-07-27 | 浪潮软件集团有限公司 | One-key tuning method based on Linux operating system |
| CN106161144A (en) * | 2016-07-26 | 2016-11-23 | 浪潮电子信息产业股份有限公司 | The method of test Smart Rack equipment cabinet server network performance |
| CN106301954A (en) * | 2016-09-22 | 2017-01-04 | 郑州云海信息技术有限公司 | A kind of method of Smart Rack grid test optimization |
| CN106528226A (en) * | 2016-10-31 | 2017-03-22 | 紫光华山信息技术有限公司 | Operation system installation method and apparatus |
| CN106790507A (en) * | 2016-12-16 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of method and system of server cluster simple communication |
| CN107171887A (en) * | 2017-05-19 | 2017-09-15 | 郑州云海信息技术有限公司 | A kind of network bandwidth test method, client and network bandwidth test system |
| CN107181626A (en) * | 2017-07-18 | 2017-09-19 | 郑州云海信息技术有限公司 | Distributed storage group system network bandwidth monitoring method and system |
| CN108959012A (en) * | 2018-06-20 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of server disk Performance Test System and method based on Hadoop |
| CN109254783A (en) * | 2018-09-18 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of server system installation method, device, equipment and readable storage medium storing program for executing |
| CN109450729A (en) * | 2018-11-05 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of method and system of automatic test whole machine cabinet server network stability |
| CN111934953A (en) * | 2020-08-07 | 2020-11-13 | 北京计算机技术及应用研究所 | Batch testing method based on domestic processor computer platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520748A (en) * | 2009-01-12 | 2009-09-02 | 浪潮电子信息产业股份有限公司 | Method for testing speed-up ratio of Intel multicore CPU |
| US20130124701A1 (en) * | 2010-07-28 | 2013-05-16 | Deutsche Telekom Ag | Method, arrangement and program for efficient configuration of network nodes |
| CN103294579A (en) * | 2013-06-09 | 2013-09-11 | 浪潮电子信息产业股份有限公司 | Method for testing high-performance computing cluster application performance |
| CN104182288A (en) * | 2014-08-18 | 2014-12-03 | 浪潮电子信息产业股份有限公司 | Method for automatically testing power consumption of server cluster system |
-
2015
- 2015-02-10 CN CN201510073107.3A patent/CN104579853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520748A (en) * | 2009-01-12 | 2009-09-02 | 浪潮电子信息产业股份有限公司 | Method for testing speed-up ratio of Intel multicore CPU |
| US20130124701A1 (en) * | 2010-07-28 | 2013-05-16 | Deutsche Telekom Ag | Method, arrangement and program for efficient configuration of network nodes |
| CN103294579A (en) * | 2013-06-09 | 2013-09-11 | 浪潮电子信息产业股份有限公司 | Method for testing high-performance computing cluster application performance |
| CN104182288A (en) * | 2014-08-18 | 2014-12-03 | 浪潮电子信息产业股份有限公司 | Method for automatically testing power consumption of server cluster system |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639402A (en) * | 2015-03-05 | 2015-05-20 | 浪潮电子信息产业股份有限公司 | Method for server cluster system network test |
| CN104850480A (en) * | 2015-05-18 | 2015-08-19 | 曙光信息产业(北京)有限公司 | Method and device for testing performance of hard disk of high-density storage server |
| CN105119772A (en) * | 2015-07-23 | 2015-12-02 | 浪潮电子信息产业股份有限公司 | IPMI function testing method of C/S structure |
| CN105119772B (en) * | 2015-07-23 | 2020-03-06 | 浪潮电子信息产业股份有限公司 | IPMI function test method for C/S framework |
| CN105243012A (en) * | 2015-09-11 | 2016-01-13 | 浪潮电子信息产业股份有限公司 | Linux based cluster network performance evaluating method |
| CN105243017B (en) * | 2015-10-20 | 2018-09-28 | 上海斐讯数据通信技术有限公司 | The test method and system of debarkation authentication are carried out based on SSH agreements |
| CN105243017A (en) * | 2015-10-20 | 2016-01-13 | 上海斐讯数据通信技术有限公司 | Test method and system capable of carrying out login authentication on the basis of SSH (Secure Shell) protocol |
| CN105471675A (en) * | 2015-11-20 | 2016-04-06 | 浪潮电子信息产业股份有限公司 | Method and system of testing nodes in batches |
| CN105404573A (en) * | 2015-12-11 | 2016-03-16 | 浪潮电子信息产业股份有限公司 | Multi-node deployment system pressure test method for SmartRack |
| CN105740152A (en) * | 2016-02-04 | 2016-07-06 | 浪潮电子信息产业股份有限公司 | Multi-node batched deployment system stress test method |
| CN105808433A (en) * | 2016-03-04 | 2016-07-27 | 浪潮软件集团有限公司 | One-key tuning method based on Linux operating system |
| CN106161144A (en) * | 2016-07-26 | 2016-11-23 | 浪潮电子信息产业股份有限公司 | The method of test Smart Rack equipment cabinet server network performance |
| CN106301954A (en) * | 2016-09-22 | 2017-01-04 | 郑州云海信息技术有限公司 | A kind of method of Smart Rack grid test optimization |
| CN106528226A (en) * | 2016-10-31 | 2017-03-22 | 紫光华山信息技术有限公司 | Operation system installation method and apparatus |
| CN106528226B (en) * | 2016-10-31 | 2020-09-08 | 新华三信息技术有限公司 | Installation method and device of operating system |
| CN106790507A (en) * | 2016-12-16 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of method and system of server cluster simple communication |
| CN107171887A (en) * | 2017-05-19 | 2017-09-15 | 郑州云海信息技术有限公司 | A kind of network bandwidth test method, client and network bandwidth test system |
| CN107181626A (en) * | 2017-07-18 | 2017-09-19 | 郑州云海信息技术有限公司 | Distributed storage group system network bandwidth monitoring method and system |
| CN108959012A (en) * | 2018-06-20 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of server disk Performance Test System and method based on Hadoop |
| CN109254783A (en) * | 2018-09-18 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of server system installation method, device, equipment and readable storage medium storing program for executing |
| CN109450729A (en) * | 2018-11-05 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of method and system of automatic test whole machine cabinet server network stability |
| CN111934953A (en) * | 2020-08-07 | 2020-11-13 | 北京计算机技术及应用研究所 | Batch testing method based on domestic processor computer platform |
| CN111934953B (en) * | 2020-08-07 | 2024-02-02 | 北京计算机技术及应用研究所 | Batch test method based on domestic processor computer platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104579853A (en) | Method for network testing of server cluster system | |
| US10044581B1 (en) | Network traffic tracking using encapsulation protocol | |
| US7440415B2 (en) | Virtual network addresses | |
| US8625448B2 (en) | Method and system for validating network traffic classification in a blade server | |
| EP2656552B1 (en) | Third party initiation of communications between remote parties | |
| US9503322B2 (en) | Automatic stack unit replacement system | |
| CN111543038A (en) | Network stream splicing using middleware stream splicing | |
| CN105024855A (en) | Distributed cluster management system and method | |
| US7840655B2 (en) | Address resolution protocol change enabling load-balancing for TCP-DCR implementations | |
| US11494130B2 (en) | Operation data accessing device and accessing method thereof | |
| CN110572439A (en) | cloud monitoring method based on metadata service and virtual forwarding network bridge | |
| CN111557087B (en) | Discovery of intermediate devices using traffic stream concatenation | |
| CN109039764B (en) | Network parameter configuration method of distributed storage system | |
| US20170366441A1 (en) | Transmitting test traffic on a communication link | |
| US7515585B2 (en) | Data communication optimization | |
| US8862939B2 (en) | Network system and management server | |
| US8572245B1 (en) | Using the TCP window size for identifying packets and debugging | |
| US9854042B2 (en) | Automated assessment report generation | |
| CN103995901B (en) | A kind of method for determining back end failure | |
| US10097400B1 (en) | Apparatus, system, and method for distributing management data to network management stations | |
| CN102624674B (en) | Intelligent switching system of client access server and method for same | |
| CN111953555A (en) | Link detection method, CPE (customer premises equipment) and storage medium | |
| Cisco | Cisco IOS Configuration Fundamentals Configuration Guide Release 12.2 | |
| Cisco | Troubleshooting WAN Connectivity | |
| Cisco | Troubleshooting WAN Connectivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |