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

[quinn snyder]

n5548/n5596 support 1/10gbe on all ports in chassis, as well as
converged ethernet (assuming appropriate licensing is installed, of
course). [0]

regards,
q.

[0] http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/data_sheet_c78-618603.html

-= sent via ipad. please excuse brevity, spelling, and grammar =-

On Sep 21, 2011, at 18:32, Chuck Church <chuckchurch at gmail.com> wrote:

> Anything showing up in the Cisco log?  I'm not sure about the 5548, but on
> the 5010/5020s, only certain ports will do both 1 gig and 10 gig.  Not sure
> if a non-1 gig capable port would accept the speed 1000 command.  Those
> symptoms sound like the speed 1000 is actually missing.  Do the SPFs on each
> side have matching wavelength?
>
>
> Thanks,
>
> Chuck
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Vinny_Abello at Dell.com
> Sent: Wednesday, September 21, 2011 5:28 PM
> To: gkg at gmx.de; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Funny problem w/ SFP link on Nexus 5548
>
> 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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