[c-nsp] Confirmation of Gigabit Ethernet autonegotiation behavior

[Andriy Bilous]

I am still wondering - WHY? Our cable guys were always handing over
ethernet tails from their SDH with speed nonegotiate, claiming their
equipment just doesn't support it (and it was Alcatel - where NOTHING is
certain). I've heard that it's actually true. Can anyone confirm?


On Fri, Jan 25, 2013 at 10:53 AM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Fri, Jan 25, 2013 at 09:54:54AM +0100, Peter Rathlev wrote:
> > So it seems 1000BASE-T cannot work without MASTER/SLAVE selection which
> > is one part of auto-negotiation. On the other hand 1000BASE-X can work
> > without auto-negotiation (AFAICT) but if Cisco uses this or not I don't
> > know.
>
> That's the "speed nonegotiate" bit.  Which nicely breaks links if one side
> is set to negotiation on and the other to off.  Like, with Carriers
> providing
> GigE links on fiber with autoneg turned off...
>
> gert
>
> --
> USENET is *not* the non-clickable part of WWW!
>                                                            //
> www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>