Configuring Cisco 1720 with leased T1 line 1

[joespiegel]

Hi, I'm new to routers. Have 2 Ethernet lans (A & B) connected with leased line. Lan A IP: 192.168.69.0, Lan B: 192.168.70.0. Need to configure new router/w CSU/DSU on each end. Question: What IP addresses should the serial(outside) interfaces of each router be?

 

[jeter]

I try to stay with these ip's. Router A 192.168.1.1 and
router B 192.168.1.2 with a 255.255.255.252 mask. If this is
not a full T1 do not forget to specify the bandwidth, example ( service-module T1 timeslots 1-6 ) <-- for 512k on the serial interface. Jeter@LasVegas.com

 

[davidarndt]

Or go IP unnumbered. It gives fewer numbers to keep track of (but requires a routing protocol to be active).