[c-nsp] When does a VLAN go down?

Marko Milivojevic markom at pangalactic.net
Wed May 17 20:07:34 EDT 2006


Perhaps not the thing you may be looking for, but some switches have this:

http://tinyurl.com/glw4t

Marko.

Shaikh, Nasir wrote:
> Hi,
> I have 2 3548s running HSRP. I also have a few static routes configured on both these switches pointing to a firewall on the LAN. These statics are then redistributed in EIGRP.
> To ensure that the static routes are considered invalid if the next hop is unreachable I have configured the statics as follows:
> ip route 10.0.0.0 255.0.0.0 vlan100 10.0.0.2
> 
> I know this works when using a physical interface as the next hop interface but here I am forced to configure the interface towards the firewall as an L2 interface.
> There is a trunk configured between the 2 switches to ensure proper working of HSRP
> I was hoping that when the only interface on the local switch belonging to VLAN100 goes down it will also bring the VLAN down.
> 
> I tried shutting down the interface but the VLAN100 remains active.
> 
> Any idea how I can get the VLAN100 to go down when the accessport goes down (the trunk remains active)
> 
> thanks
> 
> Nasir 
> 
> 
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