route-map ?

[DWAM_2]

Hello,

I have got 2 sites connected with a X25 cloud, 3 hosts in each sites :

A1 A2 A3 in site A.

B1 B2 B3 in site B.

I got 3 links between site A and B.

L1, L2 and L3

I use eigrp routing protocol between these sites -> I have got load sharing

between 3 links and if I loose a link, it works with 2 others links and so on.

What I want to do :

A1 communicates with B1 throw L1

A2 communicates with B2 throw L2

A3 communicates with B3 throw L3

If I loose L1, communication between A1 and B1 will pass by L2 and L3

and so on.

I think I have to use route map but i don't know how :/

Thanks you for your help!

[devang_etcom]

hi,

will you tell me what is A1, A2, A3 and same as B1, B2, B3. and if you send your connectivity diagram then it will be more easy to provide solution.

regards

Devang

[DWAM_2]

Hello,

A1 A2 A3 B1 B2 B3 represents hosts with one IP address.

Regards.

[tdrais]

It really depends if that is all the traffic you have you can just use floating static.

site a

ip route b1 to l1

ip route b1 to l2 10

ip route b1 to l3 20

ip route b2 to l1 10

ip route b2 to l2

ip route b2 to l3 20

.

.

.

Now if you have traffic that is say A2 to B1 you can't use this method.

The generic method for source based routing is called policy based routing (PBR). Now in your case you want the policy routing to change if a line fails. Untill very recently that was almost impossible to do. With the new track options you can do this but it is still a complex configuration

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080457bcc.html

[DWAM_2]

Hello,

we have done the test with static route and it's works good.

The problem is :

if we loose a link, we loose the connexion.

I explore your url link.

Regards.

[DWAM_2]

Hello,

I have found a solution with using offset-list in and offset-list out commands,redistribute static route and acl.

Regards.

[vladrac-ccna]

Hello,

there's a feature (not available on all platforms) that might be useful.

If this traffic is well-defined (destination fixed for each site), you can try:

Reliable Static Routing Backup Using Object Tracking

the following link show an use for this feature (though you can use it in your scenario too):

http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/products_feature_guide09186a00801d862d.html#wp1082217

Hope this help a bit,

please remember to rate all useful posts,

Vlad