For our N5k/N2k implementation, we choose to have our servers use port channels (via vPC) to connect to the N2k, and to then have an outbound vPC from our N5k's, instead of a vPC connecting the N2k's.
Thank You Daniel Bielawa Network Engineer Liberty University Network Services (434)592-7987 LIBERTY UNIVERSITY 40 Years of Training Champions for Christ: 1971-2011 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of -Hammer- Sent: Wednesday, February 15, 2012 9:53 AM To: [email protected] Subject: [c-nsp] Nexus FEXs and pinning max-links All, I've been playing with some Nexus gear in our lab and I'm confused on a physical layer issue. When defining the FEX, you define the max-links. Originally I set it to four and then built my port channel. Of course, it gave me an error ERROR: FEX max-links not configured to be one Which after googling and thinking thru makes sense. I'm defining the ports as a port channel so I need a max-links of "one". Not "four" (as in four wires between the N5K and N2K). That makes sense. What I'm struggling with is in what scenario I would NOT create a port channel. When would I just assign the physical links to the FEX and not build an etherchannel for them? Anyone? !!!get your FEX on !!!! define a FEX fex 101 desc FEX101 !!! define maximum links! !!! trick question! If the link is a PO then your max links is 1. pinning max-links 1 !!!! define the port channel interf po101 !!! MODE! switch mod fex-fabric !!! associate it with the logical FEX fex asso 101 !!!! Bring the physicals (with the FETs connected) into the PO101 interf ra e2/1 - 4 !!! MODE! switch mode fex-fabric !!! call the fex! fex ass 101 !!! call the PO channel-group 101 no shut -- -Hammer- "I was a normal American nerd" -Jack Herer _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
