Using autoroute to steer IPv6 traffic down SR Tunnel

[steven.crutchley]

Hi everyone,

Here I have an SR tunnel that uses autoroute to forward any traffic destined for something in 10.1.1.0/24 (that is downstream of the endpoint) into the POLICY1 policy.

segment-routing
 traffic-eng
  policy POLICY1
   color 50 end-point ipv4 1.2.3.4
   autoroute
    include ipv4 10.1.1.0/24
   !
   candidate-paths
    preference 100
     dynamic
      metric
       type te

But if I try to do the same for v6 traffic I only get the `include ipv6 all` option:

RP/0/RP0/CPU0:R1(config)#segment-routing
RP/0/RP0/CPU0:R1(config-sr)# traffic-eng
RP/0/RP0/CPU0:R1(config-sr-te)#  policy POLICY1
RP/0/RP0/CPU0:R1(config-sr-te-policy)#   color 50 end-point ipv4 1.2.3.4
RP/0/RP0/CPU0:R1(config-sr-te-policy)#   autoroute
RP/0/RP0/CPU0:R1(config-sr-te-policy-autoroute)#include ipv6 ?
  all  Include all eligible IPv6 prefixes
RP/0/RP0/CPU0:R1(config-sr-te-policy-autoroute)#include ipv6 

Can I not use autoroute to steer specific v6 prefixes? Should I be using static routes for this?

[Cristian Matei · Accepted solution]

Hi,

  Indeed, for IPv6, only "all" keyword is an option. Note that in IOS-XR, also for IPv4, specific prefixes are supported only via IS-IS, as I recall.

Best,

Cristian.