Routing based on source address

[admin_2]

Is there a way to make the routing decision based on source address? For example to be able to route a specific source ip address to a specific interface inside the router.

[#2]

Yes, you can route based on source IP address using Policy Based Routing. Using Policy based routing, you can also route based on the size of the packet.

http://www.cisco.com/warp/public/cc/techno/protocol/tech/plicy_wp.htm

[osam]

>>Here is an example on how to do that...

>>Lets say that the traffic you want to apply the source routing on is from interface e0 >>with the following configuration...

interface e0

description PBR example interface

ip address 10.10.10.1 255.255.255.0

ip policy route-map pbr_map

>> And s0 is your interface to your gateway (ISP), (example here is 172.20.1.1)

interface s0

ip addresss 172.20.1.2 255.255.255.252

>> Set an access list for all traffic you want to apply source routing to...

access-list 12 permit 10.10.10.0 0.0.0.255

>> Configure a route-map (pbr_map is arbitrary, but has to match the name applied in the interface e0)

route-map pbr_map permit 10

match ip address 12

set ip next-hop 172.20.1.1

[osam]

>>Here is an example on how to do that...

>>Lets say that the traffic you want to apply the source routing on is from interface e0 >>with the following configuration...

interface e0

description PBR example interface

ip address 10.10.10.1 255.255.255.0

ip policy route-map pbr_map

>> And s0 is your interface to your gateway (ISP), (example here is 172.20.1.1)

interface s0

ip addresss 172.20.1.2 255.255.255.252

>> Set an access list for all traffic you want to apply source routing to...

access-list 12 permit 10.10.10.0 0.0.0.255

>> Configure a route-map (pbr_map is arbitrary, but has to match the name applied in the interface e0)

route-map pbr_map permit 10

match ip address 12

set ip next-hop 172.20.1.1

[m.lesnick]

Question?

access-list 12 permit 10.10.10.0 0.0.0.255

can it be replaced with a single host?