[c-nsp] Funny problem w/ SFP link on Nexus 5548

[Jeff Cadwallader]

We had to put in the unsupported transceiver command also to get
OEM/Compatible SFP's to work.

Jeff

Message: 8
> Date: Thu, 22 Sep 2011 08:17:36 +1000
> From: Joshua Atterbury <joshuaatterbury at gmail.com>
> To: "<Vinny_Abello at Dell.com>" <Vinny_Abello at Dell.com>
> Cc: "<cisco-nsp at puck.nether.net>" <cisco-nsp at puck.nether.net>
> Subject: Re: [c-nsp] Funny problem w/ SFP link on Nexus 5548
> Message-ID: <CC449C9F-B030-4376-A95B-34533C5F0DB1 at gmail.com>
> Content-Type: text/plain;       charset=us-ascii
>
> 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, <Vinny_Abello at Dell.com> 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: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] On Behalf Of Garry
> > Sent: Wednesday, September 21, 2011 3:43 PM
> > To: cisco-nsp at puck.nether.net
> > 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
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