QoS | set nexthop vs redirect

[steven.crutchley]

Hey everyone,

If I'm configuring a policy-map, what is the difference between setting the next hop for something versus redirecting something?

My config seems to take both so I'm assuming they're different somehow...

policy-map type pbr POLICY1
 class type traffic CLASS1 
  set destination-address ipv4 1.2.3.4
  redirect ipv4 nexthop 1.2.3.4

[MHM Cisco World]

QoS use redirect !!
I dont think this policy for QoS it for  routing 

MHM

[balaji.bandi]

what is the use case here, and what platform or hardware you deploying this and what code running.

Different platform have syntax changes based on the code running.

The set ip next-hop command verifies the existence of the next hop specified, and:

• if the next hop exists in the routing table, then the command policy routes the packet to the next hop.

• if the next hop does not exist in the routing table, the command uses the normal routing table to forward the packet.

As per i know Redirect -  if you looking to use enhancedPBR on the redirection of the services based on the marking.

[steven.crutchley]

The context is for use with Flowspec. Does that help clarify which one I should use? 

[balaji.bandi · Accepted solution]

If this is ASR and IOS XR then based on required you can use Redirect.

Look at the examples :

https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/710x/routing/configuration/guide/b-routing-cg-asr9000-710x/implementing-bgp-flowspec.html

https://community.cisco.com/t5/service-providers-knowledge-base/asr9000-xr-understanding-bgp-flowspec-bgp-fs/ta-p/3139916

[MHM Cisco World]

Bgp flowspec for security as I know not for QoS

MHM