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1720 router setup

We are running a T1 line connection between our office and co-location with CSU/DSU 1720 Cisco routers at both ends.

I received a new router and despite the fact that I copied the existing configuration from one production router using a TFTP server and a “show interface” command shows serial interface up, line up, I can not communicate with the router at the other end.

Can anyone help?

  • Other Network Infrastructure Subjects
1 REPLY

Re: 1720 router setup

What model was the new router, Is the IOS same on both the routers ? Some commands, might not work if you r using earlier version of IOS on the router you replaced. Did you double check the configs on the old and new routers ?

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