Local SPAN

Unanswered Question
May 16th, 2007

I have eight cisco 6509 switches interconected via EtherChannel's.VLAN 15 exists on each on of them and is in the allowed VLAN list on the etherchannel.

My question is that if i start a local SPAN session ( to capture VLAN 15) on say switch 1,will this session capture the VLAN 15 traffic as seen on other switches aswell.

Thanks!

I have this problem too.
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chris.lepa Wed, 05/16/2007 - 11:11

Hi,

I'm pretty sure it'll just capture local VLAN 15 traffic. RSPAN is the one that captures remote VLAN traffic.

-Chris

rpsrekhi3 Wed, 05/16/2007 - 11:19

Yeah,i also think that way but the Trunk-Ports ( Etherchannel) also carry VLAN 15.Any possibility that VLAN15 traffic from inter-conected switches also make way in the SPAN session.

chris.lepa Wed, 05/16/2007 - 11:21

Yes, any VLAN 15 traffic recieved on the switch running the local SPAN session will be seen.

If some VLAN 15 traffic travelled from SW2 through SW1, it would be seen.

-Chris

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