03-07-2014 02:55 AM - edited 03-07-2019 06:34 PM
Hello Experts,
We are facing a lot of packet drops in our LAN.
When we try to ping one of the access switches from the CE router, we get the follwoing output:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!
Some command outputs and show tech of all switches attached from the customer which I have attached.
I have also attached a diagram but the only router''s IP address is correct in the diagram while IP address of switches in the diagram are incorrect. Here are the correct IPs of the switches:
Core Switch : 10.132.139.2
Access Switches:
10.132.136.17
10.132.136.18
10.132.136.29
Apart from packet drops on VLAN 1 we are seeing high CPU utilization on core switch
ingur-msl-coresw#sh processes cpu sorted | ex 0.0
Core 0: CPU utilization for five seconds: 61%; one minute: 45%; five minutes: 47%
Core 1: CPU utilization for five seconds: 63%; one minute: 46%; five minutes: 56%
Core 2: CPU utilization for five seconds: 36%; one minute: 74%; five minutes: 69%
Core 3: CPU utilization for five seconds: 85%; one minute: 69%; five minutes: 65%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
5638 2374911 23863975 131 52.03 52.24 52.58 1088 fed
9227 43623 21191441 182 8.36 5.53 5.71 0 iosd
6146 1437288 13888905 56 0.95 0.68 0.70 0 pdsd
5639 1292905 86276135 11 0.13 0.13 0.11 0 platform_mgr
6161 2831440 20952285 955 0.13 0.12 0.10 0 cpumemd
I can get more details required to resolve this, please help!!
03-07-2014 06:41 AM
Hi,
I can see several Mac Flaps in the logs provided.... i.e. on int gi 1/1/3. have you verified you don't have any bridging loop occurring on the network?
Regards,
Yaseen
03-07-2014 09:13 AM
How do I check that?
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