SPAN with Layer-3 Links to Core/Distribution

Unanswered Question
Apr 12th, 2010

Hi

I have a question regarding SPAN with Layer-3 link to Core/Distribution?

The topology is as under:

<IP-Phone>-----<cat3560>------<cat6500>------<3570>------<recording-server>

Cat3560s are configured with Data and Voice VLANs

There are 5 x 3560 connected with using layer-3 uplinks to cat6500. Now if SPAN is configured the port goes down is promiscuous mode and causes traffic. Cat6500 are in building 2 where as 3560s are in building 1. RSPAN is not applicable due to layer-3 uplinks. Another option could be RITE, but it is not supported on 3560 switches.

Traffic need to be sniffed for voice vlan for specific phones.

Any suggestions

regards,

Khalid

I have this problem too.
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