ISRs and HWIC-4ESW problem

Unanswered Question
May 25th, 2009

Everytime we trunk VLAN-s on any of HWIC-4ESW ports, problems like VoIP conversation get disconnected very shortly after being established, VPNs that get routed through those virtual, VLAN interfaces on that router don't get established, there are a lot of packet losses etc.

The router we just tested today is Cisco ISR 3845, with c3845-advipservicesk9-mz.124-11.T1 IOS.

When we put that port on access mode everything works fine.

We would very much appreciate your help and experience,


I have this problem too.
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glen.grant Tue, 05/26/2009 - 03:33

What exactly are you trunking? From the router to another switch ? From router to a voip phone with a pc hung off it ? I have never seen any problem trunking to another switch of a 4 esw but have not used them as voip ports . Do your phones have to be trunked or can they use an access port with a voice vlan config ?


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