Root cause of high latency

[hafiz]

Hi guys,

I need your expertise to help me troubleshoot my issue. My current infrastructure have summit x450a(redundant) as core switch and blade servers(hosting VDI).

However, I noticed there is high cpu utilization on those core switches. Plus I can't ping the VDI vlan eventhough there is no acl. The VDI don't have any issue connecting to the internet.

I attached some screenshots for your reference. What I really want to know is where is the root cause of this issue. For your info my switches use XOS 12.XX

Thank you in advance

[hafiz]

I think I have found the solution.but I haven't try yet.refer below 🙂

https://gtacknowledge.extremenetworks.com/articles/Solution/High-CPU-Utilization-from-Process-Nodemg...

[bw447]

We had some latency issues a while back. Command we used a lot was "show port statistics" It does a good job of showing RX/TX , Broadcast and Multicast packet counts. We saw that we had a high amount of Multicast. GTAC recommended we upgrade our EXOS version. We are currently running 16.1.1.4. Since we did that we haven't had any issues come up.

[hafiz]

This is the result after I ran the command 🙂

[SchmuFoo]

You could check if there is a loop via ELRP command and in addition, use the "show port utilization" to look for Ports with unusual High packets-per-second.