when dhcp snooping entries removed ?

[Burak_Kale]

Hi ;

I know that we can clear dhcp-bindings for a port manually.

Are there any way to clear dhcp-bindings when an interface is down ?

Is there any way to create a timer for that or am i have to wait for the dhcp lease time?

Regards,

Burak.

[BrandonC]

Burak,

I apologize, I misspoke previously. You can specify the port in that command.

You should be able to find information on setting up UPM profiles in the Universal Port section of the EXOS User Guide.

[Burak_Kale]

So i understand from that last two answers , we can do it by using a script file.

clear ip-security dhcp-snooping entries vlan "Default" ports 7

@Brandon ; we can clear the bindings using the following command .

I think if i can write correct script that finds the ports that goes down , i can do that.

Thanks for the ideas. I will try that , and if i succeed i will share.

Regards,

Burak.

[BrandonC]

Hi Burak,

You can clear the DHCP snooping bindings for a vlan, but they cannot be cleared per-port. You could configure a UPM profile to clear the bindings on a link down, but since this would be per-vlan, it would not do what you are asking.

-Brandon

[Sumit_Tokle]

if you are good at script then you can match the port down log and clear the snooping entry using the simple script