Setting Full Duplex on 2600 Router

[coolboarderguy]

Hi All,

am using 2 2600 routers and 1 2900 switch for CCNA study purposes. I answered yes to full duplex for 1 router, but, the 2nd router didn't prompt me for the initial set up, and am wanting to set it with a command. What is that command.? I looked here,

http://www.cisco.com/warp/public/473/3.html

but get this,

Tom#set port duplex 0/1 full

^

% Invalid input detected at '^' marker.

Tom#

What am I doing wrong..? I know it's a no brainer, eh...cheers.

coolboarderguy...

[Georg Pauwen]

Hello,

I assume ´Tom´ is your 2600 router ? You have to get into interface configuration mode and set the duplex there:

Tom#conf t

Tom(config)#interface FastEthernet0/1

Tom(config-if)#duplex full

Tom(config-if)#end

Tom#wr

HTH,

GP

[coolboarderguy]

Hi All,

not fastEthernet, just 10/100. Anyway, below is what I tried,

Tom#

00:45:09: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (no.

Tom#conf term

Enter configuration commands, one per line. End with CNTL/Z.

Tom(config)#int eth0/0

Tom(config-if)#duplex full

^

% Invalid input detected at '^' marker.

Tom(config-if)#

00:46:09: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Etheduplex fulll ^

% Invalid input detected at '^' marker.

Tom(config-if)#duplex 100

^

% Invalid input detected at '^' marker.

Tom(config-if)#

I'm guessing I'm confusing commands for Ethernet and fastEthernet, yes..? Cheers.

EDIT: Ok, my boo there..the 2nd 2600 only had ethernet not fastethernet. I changed to a 2nd with fastethernet, but, still get this,

Router(config-if)#int fastEth0/0

Router(config-if)#duplex full

^

% Invalid input detected at '^' marker.

Router(config-if)#

coolboarderguy...

[Georg Pauwen]

Hello,

try to set the speed first:

Router(config-if)#int fastEth0/0

Router(config-if)#speed 100

The syntax for the duplex setting could also be ´full-duplex´, what do you see when you type a ? at the interface command prompt ?

Router(config-if)#?

Regards,

GP

[bgandhi]

Hi,

You need to go to enable mode.

Type Config t .

Type interface Ethernet 0/1

Type Full-duplex.

Regards,

Bhavesh