Autostate manipulation

Unanswered Question
Feb 7th, 2008

Hi,


Imagine I have a core switch with a trunk connection to an access switch carrying vlan 100. Ordinarily if this trunk connection went into a 'down' state, then 'Autostate' feature of IOS would automatically mark any L3 VLAN interfaces as down on the core switch if the trunk was the only active connection using VLAN100.


The challenge: I want the L3 VLAN interface to go into a 'down' state when the trunk link goes down REGARDLESS of whether it was the last active connection using VLAN 100.


The important thing for me is that this core switch stops advertising VLAN 100 via OSPF when the trunk is down.


HSRP tracking won't have any effect, because regardless of HSRP state the VLAN will continue to be advertised.


I hope that makes sense. Any ideas?


Thanks,


Doug

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