topic RE: DHCP snooping on C5G124-48P in ExtremeSwitching (Other)

DHCP snooping on C5G124-48P

Brian_Bitecofer — Sat, 12 Nov 2016 03:17:00 GMT

We starting having an issue with ports going D-Down on two C5 switches. In every case the device that was plugged in is a gaming console. Is there anyway to get more detail about what triggered the switch to place the port in D-Down? Netsight has not recording the port going down.

RE: DHCP snooping on C5G124-48P

Alex15 — Sat, 12 Nov 2016 12:53:00 GMT

Hello Brian
not sure if this could help but we had some issues with flowcontrol on some of the alphabets.
Could you check if disabling fc might solve your issue?

RE: DHCP snooping on C5G124-48P

Bastian_Sprotte — Sat, 12 Nov 2016 14:42:00 GMT

Hello,
D-Down is good explained in the GTAC Knowledge Home Base

https://gtacknowledge.extremenetworks.com/articles/Q_A/Why-does-a-port-on-my-switch-enter-an-Admin-S...

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RE: DHCP snooping on C5G124-48P

Brian_Bitecofer — Thu, 17 Nov 2016 04:01:00 GMT

After further investigating, all of the ports are going down because they are hitting the ARP rate limit. I'm still trying to figure out why this is only happening in one building. I turned off the ARP rate limit on the effected switch stacks and now they don't go down.

Students have consoles in their rooms in other residents halls with no issues.