I am building a home lab. I have a 1841 router connected to the ISP router and is configured and works good. I have 3550 switch inside my network. I can ping as far as the outside interface on the router, but not further then that. No idea why. I have enabled IP routing on the switch and I have redirected all unknown traffic out of the routers interface. Can anyone suggest something. I have no idea why is not working.
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Thank you for the answer.
I tried what you said. I disable the IP routing on the switch and I configure the interface fa0/1 on the router with sub-interface and I used the encapsulation dot1q. On the switch I configured the interface that I have the PC as access and the interface that goes to the router as a trunking. But still the same problem.
Still no idea why. Normally this should work without any problem...
Kindly share me your router & switch config
1) when you say you are able to ping all destination from router , not from PC and switch following things to be checked
b) LAN network extend-ability over to switch .