Export Maps ...................................................................................429
Global Export Maps ........................................................................430
Import Maps ...................................................................................430
Global Import Maps ........................................................................431
Global Export of IPv6 VPN Routes into the Global BGP IPv6 RIB ...........432
Assigning an Interface to a VRF ............................................................432
Defining Secondary Routing Table Lookup ...........................................434
Adding Static Routes to a VRF ...............................................................435
Configuring IGPs on the VRF .................................................................436
Configuring the IGP in the VRF Context ..........................................436
Configuring the IGP Outside the VRF Context .................................437
Disabling Automatic Route-Target Filtering ...........................................438
Creating Labels per FEC ........................................................................438
Configuring PE-to-PE LSPs ....................................................................440
Enabling BGP Routing ...........................................................................440
Enabling BGP ECMP for BGP/MPLS VPNs ..............................................440
Enabling VPN Address Exchange ..........................................................443
Configuring PE-to-CE BGP Sessions .......................................................444
Advertising Static Routes to Customers .................................................445
Advertising IGP Routes to Customers ....................................................445
Disabling the Default Address Family ...................................................446
Using a Single AS Number for All CE Sites ............................................447
Preventing Routing Loops .....................................................................448
Advertising Prefixes with Duplicate AS Numbers ..................................451
Controlling Route Importation ..............................................................452
Deleting Routes for a VRF .....................................................................453
Enabling VRF–to–VR Peering ................................................................454
Achieving Fast Reconvergence in VPN Networks ..................................455
Fast Reconvergence with Unique RDs ............................................456
Fast Reconvergence by Means of Reachability Checking ................457
Configuring BGP to Send Labeled and Unlabeled Unicast Routes ..........458
BGP Next-Hop-Self ................................................................................459
BGP Processing of Received Routes ......................................................460
Labeled Unicast Routes ..................................................................460
Unlabeled Unicast Routes ...............................................................460
Resolving IPv6 Indirect Next Hops .................................................460
Labeled VPN Routes .......................................................................460
BGP Advertising Rules for Labeled and Unlabeled Routes with the Same
AFI .................................................................................................461
Providing Internet Access to and from VPNs ...............................................461
Enabling Traffic Flow from the VPN to the Internet ..............................462
Problems ........................................................................................462
Solutions ........................................................................................462
Configuring a Default Route to a Shared Interface ..........................462
Configuring a Fallback Global Option .............................................463
Configuring a Global Import Map for Specific Routes ......................464
Creating a BGP Session Between the CE Router and the Parent VR .......465
Enabling Traffic Flow from the Internet to the VPN ..............................467
Static Routes to a Shared IP Interface .............................................467
Global Export Map ..........................................................................468
xviii â– Table of Contents
JUNOSe 11.1.x BGP and MPLS Configuration Guide
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