>From the cisco nx-os 5.0(3) n2 (1) release notes: Auto-Negotiation Disable Beginning with Cisco NX-OS Release 5.0(3)N2(1), you can disable auto-negotiation on a switch port. This feature allows you to connect devices that do not support auto-negotiation (for example, certain DWDM multiplexers) to a Cisco Nexus 5000 Series switch.
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/release/notes/Rel_5_0_3_N2_1/Nexus5000_Release_Notes_5_0_3_N2.html ________________________________________ From: [email protected] [[email protected]] On Behalf Of John Gill [[email protected]] Sent: Friday, 23 September 2011 3:07 AM To: [email protected] Subject: Re: [c-nsp] Funny problem w/ SFP link on Nexus 5548 Good point, Pete - 5.0(2) does not support 1G SFP, but the behavior is tricky. The port will link up, but we cannot pass traffic above 256B. We did not have the proper message to block 1G configuration, so it was hard to know this isn't supported. Garry, "no negotiate auto" would be a good test, so after the upgrade please let me know. There are more transceiver outputs we can gather if this doesn't help. Regards, John Gill cisco On 9/22/11 7:47 AM, Pete Templin wrote: > >> -----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 >> >> 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 ... > > Silly question I'm sure, but are you running NXOS code that supports 1G > operation? 1G support wasn't in initial code releases, first support > came around April of this year I think. > > pt > > _______________________________________________ > 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/
