Problem with Cisco router

20 pts.
Tags:
Cisco 3660
Cisco IOS
Router Troubleshooting
I have a old 3660 cisco router. IOS is 11.3

it has got a 8 port WAN card.

The problem is, with live media the port goes up but line protocol remains down.

the cables, connectors and ok I have checked those with other router and they work fine with other routers. 

So any idea............

thanks in advance.



Software/Hardware used:
Cisco router 3660

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What type of media? Possibly a clocking issue?

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  • BlankReg
    That was my thought as well :-) If connecting to another router back-to-back, check if the interface cable is the DTE or DCE. If it is the DCE then use the interface command clock rate as one end needs to generate a clock otherwise the interface protocol does not come up. If it is connecting to your service provider then they should provide the clock and your interface is a DTE (so no clock rate command), but it does need the correct protocol (HDLC, PPP, Frame-Relay or whatever).
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  • Sixball
    Agree with both gents: Check the clock rate / Port / Protocol configs...
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