Are the NX dual Rate ports? (1/10g) I've had to disable speed autoneg on 3750s when connecting to dual rate ports on nexus using 1gig optics
Sent from my iPhone On 22/09/2011, at 7:27 AM, <[email protected]> wrote: > Is Gig-E auto negotiation set the same on both devices? It sounds kind of > like the Nortel has Gig-E auto negotiation disabled, so it will show link as > soon as it sees light. Your NX might be trying to auto negotiate which won't > work if the other side isn't doing it as well. Maybe try disabling auto neg > on the NX. > > -Vinny > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Garry > Sent: Wednesday, September 21, 2011 3:43 PM > To: [email protected] > Subject: [c-nsp] Funny problem w/ SFP link on Nexus 5548 > > Hi, > > I'm currently at a customer who got a 5548 with 2248 FEX and several > 2960S connected to the 5548, everything working fine. Anyway, in order > to migrate from the old switch infrastructure, we tried to interconnect > them to the 5548, which is where my problem started - the link just > won't go up on the NX ... > The other side is a Nortel core switch, with 8616SXE card for fiber > links. On the Nortel, the link light goes on when I connect the > switches, but the Nexus doesn't do anything. SFPs are the same as for > the links to the 2960S, OEM/compatible 1G optics. Ports are configured > for 1G ("speed 1000"), same as for the 2960S. When I put the same SFP in > a 2960S, the link comes up at once. > What am I missing here? > > Thanks, Garry > _______________________________________________ > 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/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
