Cisco NCS 5500 Series Configuration Manual page 82

Configure BGP Accept Own
Use the inheritance-disable keyword to disable the "accept own" configuration and to prevent inheritance of "acceptown"
from a parent configuration.
BGP Accept Own Configuration: Example
In this configuration example:
• PE11 is configured with Customer VRF and Service VRF.
• OSPF is used as the IGP.
• VPNv4 unicast and VPNv6 unicast address families are enabled between the PE and RR neighbors and
IPv4 and IPv6 are enabled between PE and CE neighbors.
The Accept Own configuration works as follows:
1 CE1 originates prefix X.
2 Prefix X is installed in customer VRF as (RD1:X).
3 Prefix X is advertised to IntraAS-RR11 as (RD1:X, RT1).
4 IntraAS-RR11 advertises X to InterAS-RR1 as (RD1:X, RT1).
5 InterAS-RR1 attaches RT2 to prefix X on the inbound and ACCEPT_OWN community on the outbound
and advertises prefix X to IntraAS-RR31.
6 IntraAS-RR31 advertises X to PE11.
7 PE11 installs X in Service VRF as (RD2:X,RT1, RT2, ACCEPT_OWN).
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
72
Implementing BGP