Cisco NCS 540 Series User Manual

Verify MPLS L3VPN Configuration 25
Verify the L3VPN Traffic Flow 25
Verify the Underlay (transport) 26
Verify the Overlay (L3VPN) 28
Providing VPN Connectivity Across Multiple Autonomous Systems with MPLS VPN Inter-AS with
ASBRs Exchanging IPv4 Routes and MPLS Labels 30
Concept 30
Configuring ASBRs to Exchange IPv4 Routes and MPLS Labels 30
Configuring the Route Reflectors to Exchange VPN-IPv4 Routes 32
Configure the Route Reflectors to Reflect Remote Routes in its AS 34
Providing VPN Connectivity Across Multiple Autonomous Systems with MPLS VPN Inter-AS with
ASBRs Exchanging VPN-IPv4 Addresses 35
Configuring the ASBRs to Exchange VPN-IPv4 Addresses for IP Tunnels 35
Configuring a Static Route to an ASBR Peer 38
Configuring EBGP Routing to Exchange VPN Routes Between Subautonomous Systems in a
Confederation 39
Configuring MPLS Forwarding for ASBR Confederations 41
Configuring a Static Route to an ASBR Confederation Peer 42
VRF-lite 43
Configure VRF-lite 43
MPLS L3VPN Services using Segment Routing 47
Configure MPLS L3VPN over Segment Routing 47
Configure Segment Routing in MPLS Core 48
Verify MPLS L3VPN Configuration over Segment Routing 51
Implementing MPLS L3VPNs - References 52
MPLS L3VPN Benefits 52
Major Components of MPLS L3VPN—Details 52
Virtual Routing and Forwarding Tables 52
VPN Routing Information: Distribution 53
BGP Distribution of VPN Routing Information 53
MPLS Forwarding 53
Automatic Route Distinguisher Assignment 54
Implementing IPv6 VPN Provider Edge Transport over MPLS 55
CHAPTER 2
L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x
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Contents

Cisco NCS 540 Series Specifications

General

Series	NCS 540
Category	Network Router
Operating System	Cisco IOS XR
Form Factor	1RU, 2RU
Forwarding Capacity	Up to 800 Gbps
Redundancy	Power supply, fan
Power Supply	AC or DC options
Management	CLI, SNMP, NETCONF
Storage Temperature	-40 to 70°C (-40 to 158°F)
Humidity	5% to 95% non-condensing