ar2200配置nqa使能后不生效
2014/12/18 15:32:01点击：
问题描述
ar2200通过nqa联动静态路由，配置成功后故障恢复后路由不能正常切换
处理过程
1、通过查看配置，用户按照配置案例配置。配置没有问题
ip route-static 192.168.200.0 255.255.255.0 10.100.111.2 track nqa admin icmp
#
nqa test-instance admin icmp
test-type icmp
destination-address ipv4 10.100.111.2
frequency 2
timeout 1
start now
2、通过查看路由，路由表都是按照正常路由进行转发的，但是ping目的地址的时候是不通的
[zdwl-R-A-nqa-admin-icmp]dis ip routing-table | include 10.100.111.2
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 120 Routes : 77
Destination/Mask Proto Pre Cost Flags NextHop Interface
192.168.200.0/24 Static 60 0 RD 10.100.111.2 Ethernet2/0/0
[zdwl-R-A-nqa-admin-icmp]ping 10.100.111.2
PING 10.100.111.2: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
3、通过查看nqa的发包情况都是正常发包的
[zdwl-R-A-nqa-admin-icmp]display nqa results test-instance admin icmp
NQA entry(admin, icmp) :testflag is active ,testtype is icmp
1 . Test 280 result The test is finished
Send operation times: 1 Receive response times: 0
Completion:no result RTD OverThresholds number: 0
Attempts number:1 Drop operation number:0
Disconnect operation number:0 Operation timeout number:1
System busy operation number:0 Connection fail number:0
Operation sequence errors number:0 RTT Status errors number:0
Destination ip address:10.100.111.2
Min/Max/Average Completion Time: 0/0/0
Sum/Square-Sum Completion Time: 0/0
Last Good Probe Time: 0000-00-00 00:00:00.0
Lost packet ratio: 100 %
2 . Test 281 result The test is finished
Send operation times: 1 Receive response times: 0
Completion:no result RTD OverThresholds number: 0
Attempts number:1 Drop operation number:0
Disconnect operation number:0 Operation timeout number:1
System busy operation number:0 Connection fail number:0
Operation sequence errors number:0 RTT Status errors number:0
Destination ip address:10.100.111.2
Min/Max/Average Completion Time: 0/0/0
Sum/Square-Sum Completion Time: 0/0
Last Good Probe Time: 0000-00
Request time out
4、通过再次确认配置其中frequency 自动测试时间间隔配置有问题
ip route-static 192.168.200.0 255.255.255.0 10.100.111.2 track nqa admin icmp
#
nqa test-instance admin icmp
test-type icmp
destination-address ipv4 10.100.111.2
frequency 2
timeout 1
start now
2、通过查看路由，路由表都是按照正常路由进行转发的，但是ping目的地址的时候是不通的
[zdwl-R-A-nqa-admin-icmp]dis ip routing-table | include 10.100.111.2
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 120 Routes : 77
Destination/Mask Proto Pre Cost Flags NextHop Interface
192.168.200.0/24 Static 60 0 RD 10.100.111.2 Ethernet2/0/0
[zdwl-R-A-nqa-admin-icmp]ping 10.100.111.2
PING 10.100.111.2: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
3、通过查看nqa的发包情况都是正常发包的
[zdwl-R-A-nqa-admin-icmp]display nqa results test-instance admin icmp
NQA entry(admin, icmp) :testflag is active ,testtype is icmp
1 . Test 280 result The test is finished
Send operation times: 1 Receive response times: 0
Completion:no result RTD OverThresholds number: 0
Attempts number:1 Drop operation number:0
Disconnect operation number:0 Operation timeout number:1
System busy operation number:0 Connection fail number:0
Operation sequence errors number:0 RTT Status errors number:0
Destination ip address:10.100.111.2
Min/Max/Average Completion Time: 0/0/0
Sum/Square-Sum Completion Time: 0/0
Last Good Probe Time: 0000-00-00 00:00:00.0
Lost packet ratio: 100 %
2 . Test 281 result The test is finished
Send operation times: 1 Receive response times: 0
Completion:no result RTD OverThresholds number: 0
Attempts number:1 Drop operation number:0
Disconnect operation number:0 Operation timeout number:1
System busy operation number:0 Connection fail number:0
Operation sequence errors number:0 RTT Status errors number:0
Destination ip address:10.100.111.2
Min/Max/Average Completion Time: 0/0/0
Sum/Square-Sum Completion Time: 0/0
Last Good Probe Time: 0000-00
Request time out
4、通过再次确认配置其中frequency 自动测试时间间隔配置有问题
根因
在ICMP、SNMP、TCP或UDP类型的测试例中，frequency取值必须大于interval和probe-count取值的乘积
默认情况下icmp的interval时间间隔是4秒，缺省情况下，probe-count一次测试探针数目是3
解决方案
将frequency的数值配置大于12
建议与总结
自动执行测试的时间间隔frequency取值有以下三种情况：
在DHCP、DNS、FTP、HTTP或Trace类型的测试例中，frequency取值必须大于timeout和probe-count取值的乘积。
在ICMP、SNMP、TCP或UDP类型的测试例中，frequency取值必须大于interval和probe-count取值的乘积。
在Jitter测试例中有如下关系：
frequency > probe-count × jitter-packetnum × interval + timeout
在基于硬件发包的Jitter测试例中有如下关系：
frequency > probe-count × jitter-packetnum × interval + 6200 + (5 × timeout/3)
6200的单位为ms。
trace和lsptrace测试例的frequency设置不能小于60s。
如果没有配置结束时间，测试不能自动停止，必须通过手动停止。不能更改正在运行的测试例的测试周期。
在DHCP、DNS、FTP、HTTP或Trace类型的测试例中，frequency取值必须大于timeout和probe-count取值的乘积。
在ICMP、SNMP、TCP或UDP类型的测试例中，frequency取值必须大于interval和probe-count取值的乘积。
在Jitter测试例中有如下关系：
frequency > probe-count × jitter-packetnum × interval + timeout
在基于硬件发包的Jitter测试例中有如下关系：
frequency > probe-count × jitter-packetnum × interval + 6200 + (5 × timeout/3)
6200的单位为ms。
trace和lsptrace测试例的frequency设置不能小于60s。
如果没有配置结束时间，测试不能自动停止，必须通过手动停止。不能更改正在运行的测试例的测试周期。
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