Configure Port duplex and speed on Cisco Switch

Posted on 2009-05-04
Last Modified: 2012-08-13
Hi, easy one for someone who knows how.
Basically I need to change the network port and duplex speed to auto and auto.
I need to change port Gi2/0/27. checked online and tried several commands but must be doing something wrong.

Thanks a lot
Question by:kwatt562
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LVL 43

Expert Comment

ID: 24294347
It is set to auto/auto already as indicated by the a-full and a-100 with the "a-" referencing 100/Full determined by auto negotiation.

Author Comment

ID: 24294501
Ok but If I wanted to make a change?, as some are listed as just auto and some auto 100, the current setup is making the printer run painfully slowly and I need to find a port speed that will work.
LVL 43

Expert Comment

ID: 24294668
The difference is the ones that say "auto auto" are ports with nothing plugged into them.  The ones that have something plugged into it say "a-100 and a-full".  Are there errors on port?

show int g2/0/27
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Author Comment

ID: 24294771
Thanks, there are no errors on the port. The printer only starting becoming slow when we changed from Hp to Cisco switches recently. The jetdirect card is set to auto. Have tried directly connecting the printer to the switch as well, also created local ports on the IP to bypass the print server, still very slow.

Author Comment

ID: 24294910
If i change the jetdirect card on the printer to 100FDx, the switch port changes to 100HDx?

Author Comment

ID: 24295005
Worth forcing the port to 100 FULL (no auto)?
LVL 43

Expert Comment

ID: 24295010
You need to change the switchport to match...

int g2/0/27
speed 100
duplex full

Author Comment

ID: 24295110
Apologies for being thick, but do I need to enter some kind of configuation mode, Im at the prompt
LVL 43

Accepted Solution

JFrederick29 earned 500 total points
ID: 24295121

SW1#config t
SW1(config)#int g2/0/27
SW1(config)#speed 100
SW1(config)#duplex full

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