08-04-2008 08:39 AM - edited 03-06-2019 12:36 AM
Is it possible to connect two routers, for redundancy purposes,with the same T1, each router having a mirror configuration. One of the routers should be actively using the T1 while the other is on standby waiting for the active to fail.
08-04-2008 09:02 AM
You must use HSRP:
Config example:
Router A(active):
hostname RouterA
!
interface ethernet 0
ip address 1.0.0.2 255.255.255.0
standby 1 ip 1.0.0.1
standby 1 preempt
standby 1 priority 200
standby track serial 0
!
interface serial 0
ip address 4.2.2.1 255.255.255.252
!
Router B(stand by):
hostname RouterB
!
interface ethernet 0
ip address 1.0.0.3 255.255.255.0
standby 1 ip 1.0.0.1
standby 1 preempt
standby 1 priority
standby track serial 0
!
interface serial 0
ip address 4.1.1.1 255.255.255.252
!
Router A and B ethernet interface must be connected in the same segment.
When Serial0 fail the router B take the control and publish the virutal ip.
For more information visite:
http://www.cisco.com/en/US/docs/internetworking/case/studies/cs009.html
--
Regards,
Raul
(please rate helpful posts)
08-04-2008 10:10 AM
Thanks so much Raul
08-04-2008 10:31 AM
Raul, your example doesn't help, because I need the routers to have the same IP address (mirror)on the Serial interfaces. A Y cable coming from the smart jack will go to both Serial ports.
Any other idea please?
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