Policy Based Routing Based on DSCP Values

[witani]

Hi,

I am a situation where I need to policy route traffic based on dscp values, but I could not find the feature enabled on my IOS

c7200p-advipservicesk9-mz.124-4.XD5.bin or even on c7200p-advipservicesk9-mz.150-1.M2.bin.

Any one knows if this is supported on Cisco routers in the first place?

Regards,

Wael

[Edison Ortiz]

I haven't tested but this should work

access-list 101 permit ip any any dscp (value)

route-map PBR-DSCP

match ip address 101

set ip next-hop x.x.x.x

Regards,

Edison

[Amol Akadkar]

Hi Edison,

I am having one query on this solution, as I am also going to implement the same in my network.

Can i configure this way?

Example:

access-list 101 permit ip any any dscp cs1

                       permit ip 192.1.1.0/24 192.2.2.0/24

Explanation:

if DSCP marking devide is on traffic will initiate from 192.168.1.2 with dscp value cs1.

if DSCP marking device id down traffic will initiate from 192.168.1.0 without dscp value.

Query:

Can we create fail-over in this scinario?

Fail over condition will be - if packets are comming with Marking with cs1, it should follow "permit ip any any dscp cs1".

If packets are comming without dscp marking, it shoud follow, "permit ip 192.1.1.0/24 192.2.2.0/24".

Regards,

Amol

[Edison Ortiz]

Yes.