no connection to lan port

[aconticisco]

Hello all,

I have a 1721 router installed with both an adsl wic and a 4 port switch wic card. My setup is as follows:

pc connected to port 3 (mode access on vlan 20) on the 4 port switch wic  (installed in 1721 router)

port 4 is configured as trunk (encap dot1q) and connected to fasethernet 0 (inbuild of 1721)

fastethernet 0 configured with no ip address

created sub-interface fastethernet 0.20 with encapsulation dot1q on vlan 20

ip address of sub interface 0.20 is 192.168.20.240

pc nic ip address is 192.168.20.245 however cannot ping 20.240 any ideas ?

I want to use only this router with its switch wic for vlans and internet

Thanks

[cadet alain]

Hi Fabio,

Yes I like creative users 

great troubleshooting session from you.

Regards.

Alain

[Beetlejuice01]

You too Alan... it was simple this time i have seen your troubleshooting in other posts, and you are great.

[cadet alain]

Hi Fabio,

thanks but I'm far away from some other users here which are really experts.

Regards.

Alain

[aconticisco]

Thanks Again, Happy Christmas !

[Beetlejuice01]

remember to close the post as resolved, for other user who can be your same problem--- happy xmass again.

[Beetlejuice01]

what have you done previously was strange... the switch port was on the same router and the mac address was seen on a switched port and on a fa0/0 port... it and also the switch was seen in transit from a trunk port... Maybe the router see that mac address on it's cam table and doesn't respond to the same mac from a fa 0. The configuration was wrong conceptually, and other test will be necessary to give a proper response to your question, but i think what i previously written can be a possible cause.