Two different default routes with different destination are possible?

[R Manjunatha]

Hello,

I configured the CE-6 router with two different default static routes with different destinations and I could not be able to reach one of the destinations when I used multiple static routes. which routing policy do I need to use to reach both destinations?

CE-6#ping 10.10.10.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.10, timeout is 2 seconds:
U.U.U
Success rate is 0 percent (0/5)
CE-6#ping 70.70.70.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 70.70.70.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
CE-6#sh run | se ip route
ip route 0.0.0.0 0.0.0.0 59.59.59.1
ip route 0.0.0.0 0.0.0.0 172.16.2.1 2

[julijime · Accepted solution]

Hi @R Manjunatha ,

Based on your configuration, the default route being installed in the routing table is the

ip route 0.0.0.0 0.0.0.0 59.59.59.1

, if this path does not have reachability to the

10.10.10.10 address

the

ping

is expected to fail. 

If the path that has reachability to the

10.10.10.10 address

is via

172.16.2.1

next hop, you can add a more specific static route such as

ip route 10.0.0.0 255.0.0.0 172.16.2.1

 to overcome this issue.

If the path through 

59.59.59.1

next hop does not have reachability to the

10.10.10.10

this can keep failing even if you set the metric equal for both default routes.

HTH,

Julio 

[Joseph W. Doherty]

For fun, try a traceroute to each destination.

[R Manjunatha]

Yes. a specific static route will resolve this problem. if I need to use a route map. What will be the configuration in this scenario?

ip route 0.0.0.0 0.0.0.0 59.59.59.1 - destination ip 70.70.70.2
ip route 0.0.0.0 0.0.0.0 172.16.2.1 -destination ip 10.10.10.10

[Joseph W. Doherty · Accepted solution]

ip route 70.70.70.2 255.255.255.255 59.59.59.1
ip route 10.10.10.10 255.255.255.255 172.16.2.1

[R Manjunatha]

Okay, there is another option I believe PBR. Anyway, thanks for the update.

[Joseph W. Doherty]

---

@R Manjunatha wrote:

Okay, there is another option I believe PBR. Anyway, thanks for the update.

---

Perhaps.  Cannot say for sure.  PBR selects routes based on source information rather than destination information.

[R Manjunatha]

Thats true. Thank you for the update. 

[guruvignesh]

Hello, Manjunatha

You should configure a

default gateway

with a higher administrative distance for the route you want to use as a backup. This way, if the primary route becomes unavailable, the router will automatically switch to the backup route.