Need to split incoming drops to 2 routers 1

[rickplatz]

Here is my dilemma,

We are a web provider that has been using a t-1 through a Cisco 1720 router.

We are now adding a 1 mb cable fiber drop for back up through a second 1720 router.

How would we split the 2 incoming lines to both routers (each has a T-1 and Ethernet card) to provide redundant service and help load balance?

Rick

 

[rkchhabra]

As I understando you neeed to configure a second T1 connection between 2 routers. You need to configure the new T1, the serial interface and then add another ip route,
which will set the new next hop as deafault
gateway. This way you´ll be balancing your traffic load.

- To configure your T1 do the following (only if the CSU DSU is internal):

Note: For both case you have to ask your ISP first which are the settings for this T1. (linecode, speed, framing,
timeslots and clock source).
If you are using a WIC 1DSU T1:
Router>enable
Router#config t
Router(config)#int serial 0
Router(config-if)#service-module t1 clock source line
Router(config-if)#service-module t1 framing esf
Router(config-if)#service-module t1 linecode b8zs
Router(config-if)#service-module t1 timeslots 1-24 speed 64

If you are using a VWIC:
Router>enable
Router#config t
Router(config)#controller t1 0
Router(config-controller)#channel-group 1 timeslots 10-24 speed 64
Router(config-controller)#framing esf
Router(config-controller)#linecode b8zs
Router(config-controller)#clock source line

- To configure the interface: (it could be frame-relay, hdlc or ppp)

Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int s2/0
Router(config-if)#ip address 172.16.1.1 255.255.255.0
Router(config-if)#encapsulation hdlc
Router(config-fr-dlci)#exit

-------------------------------------

Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int s2/0
Router(config-if)#ip address 172.16.1.1 255.255.255.0
Router(config-if)#encapsulation frame-relay
Router(config-if)#frame-relay lmi-type ansi
Router(config-if)#frame-relay interface-dlci 18
Router(config-fr-dlci)#exit

... after this you have to add another default gateway for this router:
(in this case the existing next hop is 54.28.65.31 and the new one is 124.48.56.3)

ip route 0.0.0.0 0.0.0.0 54.28.65.31
ip route 0.0.0.0 0.0.0.0 124.48.56.3
Thanks
R

 

[rickplatz]

Thanks for the info!

I will be splitting 1 T-1 and 1 Ehternet to both 1720's so we have redundant incoming drops on seperate power supplies, what you provided has helped put me on the right track.
Thanks again,
Rick