Juniper ACX1000 Configuration Manual page 19

Chapter 26
Copyright © 2017, Juniper Networks, Inc.
Enabling the Layer 2 Circuit When the Encapsulation Does Not Match . . . . . . . 780
Configuring Local Interface Switching in Layer 2 Circuits . . . . . . . . . . . . . . . . . . . 781
Configuring the Interfaces for the Local Interface Switch . . . . . . . . . . . . . . . 781
Enabling Local Interface Switching When the MTU Does Not Match . . . . . . 782
Example: Configuring Layer 2 Circuit Switching Protection . . . . . . . . . . . . . . . . . 783
Accepting Route Updates with Unique Inner VPN Labels in Layer 3 VPNs . . . . . 785
Accepting Up to One Million Layer 3 VPN Route Updates . . . . . . . . . . . . . . 786
Accepting More Than One Million Layer 3 VPN Route Updates . . . . . . . . . . 787
Enabling Chained Composite Next Hops for IPv6 Labeled Unicast
Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 789
Understanding Per-Packet Load Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 789
Configuring Per-Packet Load Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 790
Per-Packet Load Balancing Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 792
Configuring Load Balancing Based on MPLS Labels on ACX Series Routers . . . . 793
Configuring Load Balancing for Ethernet Pseudowires . . . . . . . . . . . . . . . . . . . . . 797
Configuring Load Balancing Based on MAC Addresses . . . . . . . . . . . . . . . . . . . . 798
ECMP Flow-Based Forwarding on ACX Series Routers . . . . . . . . . . . . . . . . . . . . 799
Sample Scenario of H-VPLS on ACX Series Routers for IPTV Services . . . . . . . 800
Sample Configuration Scenario of H-VPLS for IPTV Services . . . . . . . . . . . 800
Guidelines for H-VPLS on ACX Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
Guidelines for Configuring Unicast RPF on ACX Series Routers . . . . . . . . . . . . . 803
Configuring Unicast RPF on ACX Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . 804
Interworking of Unicast RFF With Different System Conditions . . . . . . . . . . 805
Configuring Unicast RPF Strict Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805
Configuring Unicast RPF Loose Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806
Unicast RPF and Default Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806
Unicast RPF Behavior with a Default Route . . . . . . . . . . . . . . . . . . . . . . 807
Unicast RPF Behavior Without a Default Route . . . . . . . . . . . . . . . . . . . 807
Configuring Unicast RPF on a VPN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 807
Example: Configuring Unicast RPF on a VPN . . . . . . . . . . . . . . . . . . . . 808
Configuring Unicast RPF Fail Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 808
Verifying Unicast RPF Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 808
Configuring Layer 3 VPNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 813
Layer 3 VPN Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 813
Understanding Layer 3 VPN Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 814
Understanding VPN-IPv4 Addresses and Route Distinguishers . . . . . . . . . . . . . . 815
Understanding Virtual Routing and Forwarding Tables . . . . . . . . . . . . . . . . . . . . 818
Understanding IPv4 Route Distribution in a Layer 3 VPN . . . . . . . . . . . . . . . . . . . 822
Distribution of Routes from CE to PE Routers . . . . . . . . . . . . . . . . . . . . . . . . 822
Distribution of Routes Between PE Routers . . . . . . . . . . . . . . . . . . . . . . . . . 823
Distribution of Routes from PE to CE Routers . . . . . . . . . . . . . . . . . . . . . . . . 825
Understanding Layer 3 VPN Forwarding Through the Core . . . . . . . . . . . . . . . . . 826
Understanding Routing Instances for Layer 3 VPNs . . . . . . . . . . . . . . . . . . . . . . . 827
Table of Contents
xix