[c-nsp] disabling GigE negotiation on NX-OS

[Tony Varriale]

On 4/15/2011 1:07 PM, Gert Doering wrote:
> Hi,
>
> yesterday, one of our customers tried to move two GigE-on-fiber circuits
> from a Catalyst 4507 to a new Nexus 5548.
>
> The other end terminates on some carrier gear (and is then multiplexed
> in whatever ways across the city).
>
> After moving the circuit, the link didn't come up on the Nexus, but
> the carrier gear *did* show link.  I wasn't on-site, so I couldn't
> investigate myself, but it smells very much like "GigE link negotiation
> being disabled on the carrier gear" - carriers love that.
>
> Of course we do not have access to either the Catalyst nor the Nexus,
> but it's "our duty" to "make it work" (after all, we provide the fiber
> patches!).  So I'd like him to test disabling link negotiation on the
> Nexus, but don't know how to do that - no access to any NX-OS gear yet.
>
> On CatOS, this is "set port negotiation x/y disable".
>
> On IOS, it's "int giga x/y / speed nonegotiate".
>
> -->  How to do it on NX-OS?
>
> http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4_0_1a/BasicEthernet.html
>
> refers to "Layer 1 autonegotiation", but no word on turning it off...
>
> gert
>
>
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Hmmm interesting.  Force it?  speed 1000.