Cisco CRS Configuration Guide

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Equal-cost multi-path routing (ECMP) is not supported.
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Interfaces must be explicitly configured to handle traffic with static MPLS labels.
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The MPLS per-VRF labels cannot be shared between MPLS static and other applications.
Feature History for Implementing MPLS Static Labeling
ModificationRelease
This feature was introduced.Release 5.1.1
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Enable MPLS Encapsulation on an Interface, page 102
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Define a Range for Static MPLS Labels, page 103
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Setup a Static LSP, page 104
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Allocate Static MPLS Label to an IP Prefix and Configure a LSP, page 105
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Allocate Static MPLS Label for a Specific VRF, page 107
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Verify MPLS Static Bindings, page 108
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Identify and Clear Label Discrepancy, page 109
Enable MPLS Encapsulation on an Interface
By default, MPLS encapsulation is disabled on all interfaces. MPLS encapsulation has to be explicitly enabled
on all ingress and egress MPLS interfaces through which the static MPLS labeled traffic travels.
SUMMARY STEPS
1.
configure
2.
mpls static
3.
interface interface
4.
Use the commit or end command.
DETAILED STEPS
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
mpls static
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
102
Implementing MPLS Static Labeling
Enable MPLS Encapsulation on an Interface

Cisco CRS Specifications

General

Operating System	Cisco IOS XR
Product Type	Core Router
Form Factor	Modular Chassis
Dimensions	Varies by chassis type
Weight	Varies by chassis type
Architecture	Distributed
Switch Fabric	Multi-stage
Interface Support	Ethernet, SONET/SDH, OTN
Interfaces/Ports	Varies by line card
Port Density	Varies by line card
Routing Protocol	BGP, IS-IS, OSPF, MPLS
Management	CLI, SNMP
Power Supply	Redundant, hot-swappable
Cooling	Redundant, Hot-swappable Fan Trays
Supported Protocols	IPv4, IPv6, MPLS
Management Interfaces	Ethernet, console
Security Features	ACLs