10 Dec
2009
10 Dec
'09
9:16 p.m.
Autoneg is a required part of the gig E specification so you'd only be causing yourself trouble by turning it off. (I don't know if it'll also break automatic MDI/MDI-X (crossover) configuration, for an example of something that's nice to have.)
At least on 450x series enhanced linecards, disabling autonegotiation disables auto MDI/MDI-X. You have to enable autonegotiation but you can provide specified offered and acceptable parameters, eg: "speed auto 100" to enable autonegotiation but only allow negotiation of 100 mb. (speed auto 10 100 / speed auto 1000 / etc) -- () ascii ribbon campaign against html e-mail /\ www.asciiribbon.org