Can you force 10Mb on a 1720 router?

[m.coppa]

How do you force 10Mb on a 1720 router?

[millerv]

It should autosense the speed.

if that doesnt work go into interface config mode

and set the speed to 10 duplex to half

config t

int fasthernet xx (slot #)

speed 10

duplex half

ctrl z

write mem

[m.coppa]

The 'speed' is't on option.

There's a 'half-duplex' command, but no 'speed'.

I'm on 12.0

[svermill]

Your interface must be 10 meg only. Do a show hardware. If it says fastethernet and you can't set speed you have a problem for the TAC.

[millerv]

Just checked the specs (fwiw) that ethernet is supposed to be 10/100 autosense. May need to call the TAC on this one

[seilsz]

The FastEthernet interface on 1700 series routers will run at 10 or 100 Mbps. However, prior to some 12.1 or 12.2 (sorry I can't remember which) code, the interface is autosense only.

[svermill]

I have 1720s in my lab running various 12.1 and all can be configured manually so it must be prior to most 12.1. Thanks.