Cisco 3845 - Security Bundle Router Software Guide

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Cisco ME 3800X and 3600X Switch Software Configuration Guide
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Chapter 34 Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS
Configuring MPLS VPNs
Configuring MPLS VPNs
This section includes this information about configuring MPLS VPNs on a switch used as a PE router:
• Default MPLS Configuration, page 34-7
• MPLS VPN Configuration Guidelines, page 34-7
These sections describe the required tasks:
• Enabling MPLS, page 34-8
• Defining VPNs, page 34-9
• Configuring BGP Routing Sessions, page 34-10
• Configuring Provider-Edge-to-Provider-Edge Routing Sessions, page 34-10
You must also configure a provider-edge-to-customer-edge routing session. These sections provide
example configurations:
• Configuring Provider-Edge-to-Customer-Edge Routing Sessions, page 34-11
• BGP Provider-Edge-to-Customer-Edge Configuration, page 34-11
• OSPF Provider-Edge-to-Customer-Edge Configuration, page 34-12
• RIPv2 Provider-Edge-to-Customer-Edge Routing Sessions, page 34-13
• Configuring Static Route Provider-Edge-to-Customer-Edge Routing Sessions, page 34-14
• EIGRP Provider-Edge-to-Customer-Edge Configuration, page 34-14
For an example of packet flow in an MPLS VPN, see the “Packet Flow in an MPLS VPN” section on
page 34-15.
Default MPLS Configuration
By default, label switching of IPv4 packets along normally routed paths is globally enabled. MPLS
forwarding of IPv4 packets is disabled by default on interfaces.
If no label protocol is explicitly configured for an interface, the default label distribution protocol for the
switch is used by the Label Distribution Protocol (LDP). By default, the labels of all destinations are
advertised to all LDP neighbors.
No VRFs are defined. The default routing table for an interface is the global routing table.
MPLS VPN Configuration Guidelines
Follow these guidelines when configuring MPLS VPN:
• MPLS requires that CEF is enabled on the switch. CEF is enabled by default. For more information
about CEF, see the “Configuring Cisco Express Forwarding” section on page 29-93.
• The switch supports MPLS forwarding on the following interfaces:
– Routed ports
– SVIs
– Routed EtherChannels

Cisco 3845 - Security Bundle Router Specifications

General

Brand	Cisco
Model	3845 - Security Bundle Router
Category	Switch
Language	English