Hi,
I have just aquired 2 router one of which is a Cisco 2501. Everything seemed fine with the routers until yesterday when i was doing a lab for my CCNA 2 course.
I configured all the ports and all seemed to kick up nicely at first and then for some unknown reason the line protocol on S0 of the 2501 changes to Lie Protocol down.
I have tried all the other ports and they come up and stay up, but SO of the 2501 changes to up fo aprox 30 seconds and then changes the line protocol to down

any idea's?
Vince