Chapter 8 Implementing Mpls Layer 3 Vpns - Cisco CRS Configuration Manual
Ios xr virtual private network
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Implementing MPLS Layer 3 VPNs
A Multiprotocol Label Switching (MPLS) Layer 3 Virtual Private Network (VPN) consists of a set of sites
that are interconnected by means of an MPLS provider core network. At each customer site, one or more
customer edge (CE) routers attach to one or more provider edge (PE) routers.
This module provides the conceptual and configuration information for MPLS Layer 3 VPNs on Cisco IOS XR
software.
You must acquire an evaluation or permanent license in order to use MPLS Layer 3 VPN functionality.
Note
However, if you are upgrading from a previous version of the software, MPLS Layer 3 VPN functionality
will continue to work using an implicit license for 90 days (during which time, you can purchase a
permanent license). For more information about licenses, see the Software Entitlement on the Cisco IOS
XR Software module in the Cisco IOS XR System Management Configuration Guide for the Cisco CRS
Router.
For a complete description of the commands listed in this module, refer to the Cisco IOS XR Virtual
Note
Private Network Command Reference for the Cisco CRS Router. To locate documentation of other
commands that appear in this chapter, use the command reference master index, or search online.
Feature History for Implementing MPLS Layer 3 VPNs
Release
Release 3.3.0
Release 3.4.0
Release 3.5.0
Release 3.6.0
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
8
C H A P T E R
Modification
This feature was introduced.
Support was added for MPLS L3VPN Carrier
Supporting Carrier (CSC) functionality, including
conceptual information and configuration tasks.
Support was added for 6VPE.
MPLS L3VPN Carrier Supporting Carrier (CSC)
information was upgraded.
Support was added for Inter-AS and CSC over IP
Tunnels.
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