change fastethernet0/0 to half duplex

[tjv]

I have a cisco 2600 router and need to know how to change the fastethernet0/0 interface to halfduplex instead of fullduplex. I am getting input and CRC errors and replace the cables and tried another switch to no avail.

thanks

 

[pixboy]

I believe all you'd have to do is go into interface FastEthernet0/0 and enter duplex half. What's it set to right now? Probably auto? I think you have to look at the configuration to see its existing settings. (Do a "write terminal" to see what it is now.)

What's at the other end of the cable? Depending on the kind of switch and/or hub, manually setting the duplex and speed might do the trick. Maybe set the switch/hub to be full duplex, as well as the router. I know some Cisco switches hate to have fixed settings thrown at them if they're set to autonegotiate. For instance Catalyst 6000 switches will errdisable an Ethernet port if it gets too many collisions, which can be caused by duplex mismatches. (That is, setting a NIC to be 100/full when the switch port it's hooked into is configured for auto.)

 

[routerman]

To see the options

int f0/0
duplex ?
speed ?


Int f0/0

duplex full

Should do the trick.

 

[tjv]

I will give it a try and let you know how it turns out. one other thing. How do I write the config to memory?

I'm new to Cisco routers.

sorry

 

[BuckWeet]

"wr" will do that

or copy running startup


i prefer wr cuz its faster. heh


BuckWeet