Cisco NCS 540 Series User Manual

CONTENTS
Preface ix
PREFACE
Changes to this Document ix
Obtaining Documentation and Submitting a Service Request ix
MPLS L3VPN Overview 1
CHAPTER 1
How MPLS L3VPN Works 2
Major Components of MPLS L3VPN 2
Restrictions for MPLS L3VPN 3
Inter-AS Support for L3VPN 3
Inter-AS Support: Overview 3
Inter-AS and ASBRs 4
Confederations 5
MPLS VPN Inter-AS BGP Label Distribution 6
Exchanging IPv4 Routes with MPLS labels 7
How to Implement MPLS Layer 3 VPNs 8
Prerequisites for Implementing MPLS L3VPN 9
Configure the Core Network 9
Assess the Needs of MPLS VPN Customers 9
Configure Routing Protocols in the Core 10
Configure MPLS in the Core 11
Determine if FIB is Enabled in the Core 12
Configure Multiprotocol BGP on the PE Routers and Route Reflectors 12
Connect MPLS VPN Customers 15
Define VRFs on PE Routers to Enable Customer Connectivity 16
Configure VRF Interfaces on PE Routers for Each VPN Customer 17
Configure Routing Protocol Between the PE and CE Routers 18
L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x
v

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