I have cisco catalyst 4503 switch with one of the vlan interfaces being 10.130.181.4/28 It's next hop device is 10.130.181.1/28
Next hop device is connected to cisco catalyst with a L2 switch.
If the interface 10.130.181.1 goes down, how does cisco detects the failure to reach the next hop and stops forwarding the traffic ?
Is there a way in the catalyst switch to enable detecting this failure and hence stopping the traffic forwarding ?
Thanks Arvind
this is one of the traditional jobs of a routing protocol.
if you are using statics then not sure, but you can lin
use a routing protocol - eg OSPF.
when the path breaks, OSPF hellos stop getting thru the link, after timeout the adjacency is torn down, and any routes using that path change or get withdrawn.
there are a number of mechanism to address this issue:
Have something to add? Share your thoughts — no account required.
Ask the community — no account required