Policy-based routing is used for path manipulation. It is used for implementing a policy that causes the packet to
take a different direction. Policy-based routing allows source-based routing. The routing table is the destination base.
In short: PBR
is a technique used to make routing decisions based on policies implemented by
the network administrator.
Here’s a list of some Advantages of policy-based routing:-
- Different users can reach their destination from different directions
- Load sharing
- PBR will be implemented on the incoming direction of the source in the interface
- If the packet matches in the route map and it is permitted it will be sent according to the policy
- If the packet matches in the route map and the route map deny the packet will be forwarded according to the normal routing table
Topology:-
Goal:-
- configure the topology as per our diagram
- configure EIGRP 100 for all the routers, advertise all the interfaces as per the topology make sure the reachability between all the routers.
- configure the bandwidth on serial 3/3 to 1000kbps and serial 3/0 remains the default bandwidth of 1544 kbps.
- configure Policy Based Routing on router 2 according to our given conditions
- traffic sourced from 13.0.0.0/24, 13.0.1.0/24 should be forwarded on serial 3/0 interface
- traffic sourced from 13.0.2.0/24, 13.0.3.0/24 should be forwarded on serial 3/3 interface
- all the remaining traffic should use the default routing path
