3550 switch setup

[adam.strobel]

Hi, I have a single 3550 that I want to setup with only 15 hosts. when I put a basic config on the switch the ports do not become active "up and up".

I'm sure i'm missing items but attached is the 3550 config. I have one laptop connected to a switch ports with the ip address of 192.168.1.2.

Please help newbie

[adam.strobel]

sorry attached is the config

[sundar.palaniappan]

Hi,

You need to create vlan 102. Optionally, you can give it a name.

The output below is from a 3550 switch.

SW1-3550#config t

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

SW1-3550(config)#vlan 102

SW1-3550(config-vlan)#name Test

SW1-3550(config-vlan)#^Z

Hope that helps!

Regards,

Sundar

[adam.strobel]

I think I already created the vlan?

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active Fa0/23, Fa0/25, Fa0/26, Fa0/27

Fa0/28, Fa0/30, Fa0/31, Fa0/32

Fa0/35, Fa0/36, Fa0/37, Fa0/40

Fa0/41, Fa0/42, Fa0/44, Fa0/45

Fa0/46, Fa0/47, Gi0/1, Gi0/2

100 VLAN0100 active

102 VLAN0102 active Fa0/1, Fa0/2, Fa0/3, Fa0/4

Fa0/5, Fa0/6, Fa0/7, Fa0/8

Fa0/9, Fa0/10, Fa0/11, Fa0/12

Fa0/13, Fa0/14, Fa0/15, Fa0/16

Fa0/17, Fa0/18, Fa0/19, Fa0/20

Fa0/21, Fa0/22, Fa0/24, Fa0/29

Fa0/33, Fa0/34, Fa0/38, Fa0/39

Fa0/43, Fa0/48

1002 fddi-default act/unsup

1003 token-ring-default act/unsup

1004 fddinet-default act/unsup

1005 trnet-default act/unsup

[mmorris11]

I'm sure I am misundestanding something but until you connect something to the port, they will not go "up and up". Do you have the 16 devices turned on and connected?

[adam.strobel]

No just on laptop for now. but the port will not come up for the one device.

thanks,

[sundar.palaniappan]

Hi,

Are you using a (cat5) straight-through cable to connect your laptop to the switch.

Regards,

Sundar

[adam.strobel]

Yes, I'm using a cat 5 straight through cable, is this correct?

[sundar.palaniappan]

You are using the correct cable.

Can you the post the output of the

show int (laptop_port#) status

show int vlan 102

[sundar.palaniappan]

Do you have the laptop connected to f0/6? That's the only port where you have hardcoded the duplex to full. If infact you are connected to f0/6 change the duplex back to auto and check whether the interface comes up. Trying to force the duplex to full doesn't work always.

HTH,

Sundar

[adam.strobel]

currently I'm on fa 0/12 and I tried setting the port to duplex auto, speed auto and I still can not bring the interface up.

[adam.strobel]

when I do a show interface fastethernet 0/12 it switches from "up and up" to "down and down" every few seconds or so.

[sundar.palaniappan]

Hi,

There's nothing in the config that would prevent the port from coming up. You are having a physical layer problem. Try another working cable, move the connection to another port or try to connect another PC.

Good Luck!

Regards,

Sundar

[adam.strobel]

OK I will give that a try. I can however on my laptop always ping the vlan102 even if the interface is showing down.

Adam

[adam.strobel]

I setup another workstation and it can connect just fine. maybe i have issues with my laptop network card. I'm going to setup my other laptop and see if it can connect.

I will let you know,

Thanks for all your help.