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MPLS/VPN Support
Revised: June 15, 2009, OL-7827-12
Introduction
This chapter provides an overview of the Service Control MPLS/VPN support. It also explains the
various procedures for configuring and monitoring MPLS/VPN.
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Service Control in the MPLS/VPN Environment
MPLS/VPN networks are very complex and utilize many routing protocols and many different levels of
addressing and control. In addition, the various VPNs may use overlapping IP addresses (private IPs).
The SCE platform makes a distinction between identical IP addresses that come from different VPNs,
and maps them into subscribers according to the MPLS labels attached to the packets. This involves
various mechanisms in all levels of the system.
The following assumptions and requirements allow the SCE platform to operate in an MPLS/VPN
environment:
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OL-7827-12
Service Control in the MPLS/VPN Environment, page 13-1
Definitions and Acronyms, page 13-2
What are the Challenges for Service Control for MPLS/VPN Support?, page 13-3
How MPLS/VPN Support Works, page 13-3
Service Control MPLS/VPN Concepts, page 13-6
Service Control MPLS/VPN Requirements, page 13-8
Configuring MPLS/VPN Support, page 13-11
Managing MPLS/VPN Support, page 13-17
The MPLS/VPN architecture is according to RFC-2547.
The specific type of encapsulation used is the MPLS shim header over Ethernet (described in
RFC-3032).
C H A P T E R
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
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