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يوفر موقع الويب الذي تزوره المحتوى باللغة العربية أيضًا. هل ترغب في تبديل إصدار اللغة؟
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Данный сайт есть в английской версии. Желаете ли Вы перейти на английскую версию?
1. Check the CPU usage of the board. The information displayed shows that the CPU usage is rather high at certain moments, when traffic collection fails.
[NE80-1-diag]display lpu cpuusage 15
Start to get lpu 15 Cpu usage...
Slot No. 15 Info is:
TSK TID TIME PERCE
----- ------- ------ ------
IDL fd000002 0 0%
OST fd000003 1 0%
LAD fd000006 0 0%
ARP fd000007 0 0%
CON fd000008 0 0%
OUT fd000009 0 0%
DBG fd00000c 0 0%
DGS fd00000d 0 0%
NPS fd00000e 173 34%
IFM fd00000f 0 0%
INT fd000010 0 0%
DVM fd000011 0 0%
ISD fd000012 12 2%
IRV fd000013 0 0%
DEM fd000014 1 0%
NTR fd000017 0 0%
PTT fd000019 309 61%
2. Check the configuration of the current network. It is found that all the 20 GE interfaces of the NE80 are configured with the NetStream function for measuring the incoming traffic. In addition, the traffic is rather heavy on certain GE interfaces, reaching 300 Mbit/s.
3. When the traffic goes through a GE interface configured with the NetStream function, this interface sends the traffic to the NP of the NetStream board according to the sampling rate of 1024. After receiving the packets, the NetStream board classifies the packets and then sends these packets from its NP to its CP. After encapsulating the packets, the CP sends the packets back to the NP, which, in turn, routes the NetStream statistics packets to the NMS. If a large quantity of data is collected, the PTT task will occupy a large portion of the CPU space when the NP sends the packets to the CP, and the NPS task will occupy a large portion of the CPU space when the CP delivers the encapsulated packets to the NP. These two tasks ultimately lead to a high CPU usage of the NetStream board, hence the failure of traffic measurement.
4. Change the sampling rate of all GE interfaces by changing ip netstream sampler inbound 1024 to ip netstream sampler inbound 5000. After this operation, the CPU usage becomes normal and then the traffic can be normally measured.