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

[Garry]

On 21.09.2011 23:27, 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.

The port is configured to "speed 1000", which AFAIK required if you use
1G SFPs instead of the default 10G ones ... is there anything else to
changes/disable?

As the same SFP works with the 2960S, and the same SFP works in the NX
for a link to a 2960S (on the same port even), there must be some
difference in the way the NX and the 2960S handles the port ... also,
there are no messages at all in the logs or on the console when I hook
up the Nortel switch ...

I reckon if I can't get it to work with the NX, I might as well just
hook up the link via the stacked 2960S, even though it's not originally
there for that ... but with the dual 10G-Link I have to the 2960, it has
enough BW to spare for the temporary connection ... that 10 year old
Nortel gear is going back to Cisco anyway once all the connections are
moved over ... trade-ins are nice ... save money, get rid of junk HW ;)

Tnx, -Garry