Local SPAN

[rpsrekhi3]

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!

[chris.lepa]

Hi,

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

-Chris

[mohammedmahmoud]

Hi,

You shall use RSPAN (Remote SPAN) for monitoring ports on other switches:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007e6fa.html

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

[rpsrekhi3]

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]

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

[mohammedmahmoud]

hi,

Yes only if this traffic reaches the local switch.

HTH,

Mohammed Mahmoud.