When the remote PE router receives routes advertised from another PE router (Routers
PE2 and PE3 in Figure 51 on page 824), it uses the following procedure to process the route:
1. If the route is accepted by the import policy on the IBGP session between the PE
routers, the remote PE router places the route into its bgp.l3vpn.0 table.
2. The remote PE router checks the route’s route target community against the VRF
import policy for the VPN.
3. If it matches, the route distinguisher is removed from the route, and it is placed into
the VRF table (the routing-instance-name.inet.0 table) in IPv4 format.
Distribution of Routes from PE to CE Routers
The remote PE router announces the routes in its VRF tables, which are in IPv4 format,
to its directly connected CE routers.
PE routers can communicate with CE routers using one of the following routing protocols:
•
OSPF
•
RIP
•
BGP
•
Static route
Figure 52 on page 826 illustrates how the three PE routers announce their routes to their
connected CE routers.
825Copyright © 2017, Juniper Networks, Inc.
Chapter 26: Configuring Layer 3 VPNs
To Next Page
Loading...
Need help?
General
