[c-nsp] The myths of autonegotiate vs forced (was: full duplex mismatch speed - dynamips)

[Jeff Kell]

 While we're on the autoneg subject...

Has anyone else run into cases of newer computers that support a powersave and/or
"wake-on-lan" state where in that instance the interface goes into a 10Mb/full connection?

Drives us nuts with the growing "green" initiatives...

Computers that do that go into some sort of zombie state that doesn't quite autoneg
properly, our switches (Cisco and Procurve) go to 10/full, but the device doesn't seem
to quite be full, and the ports will generate lots of up/downs and errors while in that
state.

If you're doing any sort of monitoring that involves trapping mac-address changes or
linkup/linkdowns, they'll drive your monitors crazy too...

When they're "working" they'll do gig/full, but when in this zombie state, they autoneg
down to 10/full

Jeff