[c-nsp] 10/100/1000 copper SFP in ASR9k / autoneg

[Jared Mauch]

You have to manually set the speed for these ports in the 40 port line cards. I might suggest just using a layer-2 switch and a 10 gig trunk instead to have usable auto-neg. Finance math may win if you are doing mostly 10 gig as it drops the cost per port/slot. 

I certainly have been frustrated at the lack of tri-rate auto-neg SFP cards from Cisco across many product lines. 

Jared Mauch

On Oct 19, 2011, at 4:35 AM, Phil Mayers <p.mayers at imperial.ac.uk> wrote:

> This is just curiosity; it's not even strictly our problem.
> 
> We host a POP (physical space, power cooling, a bit of telco liason) for our upstream, who have an ASR9k on site that we and a lot of other people connect into.
> 
> In providing assistance for a couple of other sites connected to that same router, it's been mentioned that the tri-rate copper SFPs don't support autoneg?
> 
> Does anyone have the faintest idea what Cisco are playing at here? I'm amazed and astonished that a product released this millenium won't support autoneg. Madness!
> 
> I've got to know - surely there must be a good reason?
> 
> Baffled,
> Phil
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