Been on the line with Cisco TAC All day and still no fix. We’re having trouble pinging internally. When we run a ping it’s consistently the third or fourth ping jumps up to a couple hundred milliseconds and all the other ones are right around 1 ms.
Our set up Is a collapsed core set up and above that is an ASA, a McAfee IDS , And then an asr router. From the core to the firewall we have a 5 GB port channel. On that port channel we have sub Interfaces build out for all of our VLANs and that is where the routing is done between vlans. Those sub Interfaces are the default gateway’s for all subnets.
Whenever we ping the default gateway of each subnet that is when we notice the ping spike. We also notice it in our server area between servers. And it seems to be causing issues with the servers and our Citrix image booting.
If this was your set up what would you do to troubleshoot the spike? We looked at firewall cpu utilization and that does not seem to be an issue. The utilization on all of the links are not getting maxed out either.
Could it come down to the actual physical connections needing cleaned? I know fiber sometimes can have issues when there is dirt on the connector. We are at a point that our network is crippled and have a huge event coming up so it needs fixed. Hoping TAC can get it figured out but for now we’re still at a standstill, so figured I would reach out here and see if anyone has any ideas.
Again this is all internal so I believe the issue is firewall or below.
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