Cisco VSS

[harishc12]

Hi All,

I have one query regarding the virtual switching system, I have port channel running between the switches for the VSL, but have not configured Dual active detection.

Query :- Is it really recommended to have the Dual active configured when we have the Port channel (2 physical links) running between switches.

Any suggestion is highly appreciated !!!

[Reza Sharifi · Accepted solution]

Hi,

Yes, you need to have dual-active detection configured.  You can use an existing Portchannel connecting to your access switches (epagp) or fast-hello which requires a 1Gig interface on both switches and a cable connecting them together.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vss.html

HTH