Question

An ISP running IOS XR peers with a customer over an EBGP IPv6 session. The operator wants all IPv6 prefixes received from this customer to be tagged with community 65001:100 so downstream route-policies can match them, while leaving all other attributes unchanged. Which routing policy configuration applied inbound on the neighbor achieves this?

Accepted Answer

route-policy TAG-CUST
  set community (65001:100) additive
  pass
end-policy  — applied with 'route-policy TAG-CUST in'

Answer

route-policy TAG-CUST
  set community (65001:100)
end-policy  — applied with 'route-policy TAG-CUST out'

Answer

route-policy TAG-CUST
  set local-preference 100
  pass
end-policy  — applied with 'route-policy TAG-CUST in'

Answer

route-policy TAG-CUST
  set extcommunity rt (65001:100) additive
  pass
end-policy  — applied with 'route-policy TAG-CUST in'