ip dhcp snooping limit rate command

[sarahr202]

Hi ever body!

The command " ip dhcp snooping limit rate" sets the number of dhcp request that can be received in a second.

what happens if the rate exceeds the configured rate?

Is this command only valid for untrusted port?

Thanks a lot!

[Elly Bornstein · Accepted solution]

According to this doc on 3750s:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_35_se/configuration/guide/swdhcp82.html#wp1070843

It can rate limit both trusted and untrusted interfaces. You will want a higher rate on trusted interfaces since they are usually an aggregate of DHCP traffic facing the dhcp server.

Exceeded traffic dropped, you can see it in 'show ip dhcp snooping statistics detail'

[Myimt]

Hi i'm tring to use command ip dhcp snooping limit rate on my cisco nexus 3064 but command doesn't exist.

I found on network that this command must be enabled on switch but how can i do that?

[Georg Pauwen]

Hello,

here is what I remember from when these switches were introduced (in 2013 I think): they are built for high-performance, low-latency data center environments. That is why some features were stripped, I think the dhcp snooping rate limit feature is one of them.

[Myimt]

Thank you for reply that's will be solution of my problem.My switch doesn't support that feature