question on etherchannel

yong khang NG · ‎05-06-2010

hi guys, there's something would like consult with you all...

given the scenario as posted:

assume vlan 10, vlan 20 were set on all 3 switches, and it's identical.

my question is:

1. will this etherchannel be establish?
2. assume SW A is root bridge for vlan 10, 20, running on Rapid-STP, how it elect which port will be in block port? (based on lowest MAC-address?)

thanks

Jerry Ye · ‎05-06-2010

This will not work as a normal setup. However, if this is Nexus 7000 + 5000 or VSS, then this will work.

http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/white_paper_c11-516396.html

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74b.html

Regards,

jerry

yong khang NG · ‎05-06-2010

cool, thanks.