Cisco CRS Configuration Guide

Example:
RP/0/RP0/CPU0:router#show mpls static local-label 200
Tue Apr 22 18:21:55.764 UTC
Label VRF Type Prefix RW Configured Status
------- --------------- ------------ ---------------- --------------- --------
200 default Per-Prefix 10.10.10.10/32 Yes Created
Verifies that the status is "Created" for the specified label value.
Step 2
show mpls label range
Example:
RP/0/RP0/CPU0:router#show mpls label range
Mon Apr 28 19:56:00.596 IST
Range for dynamic labels: Min/Max: 16000/1048575
Checks the dynamic range and ensures that the specified local-label value is outside this range.
Step 3
show mpls lsd forwarding
Example:
RP/0/RP0/CPU0:router#show mpls lsd forwarding
Tue Apr 29 15:59:52.011 UTC
In_Label, (ID), Path_Info: <Type>
89, (IPv4, 'default':4U, 5.6.78.55/32), 1 Paths
1/1: IPv4, 'default':4U, Gi0/0/0/21, nh=0.0.0.0, lbl=89, tun_id=0, flags=0x0 ()
110, (IPv4, 'default':4U, 2.2.2.2/32), 1 Paths
1/1: IPv4, 'default':4U, Gi0/1/0/0, nh=1.12.1.2, lbl=Pop, tun_id=0, flags=0x0 ()
120, (IPv4, 'default':4U, 3.3.3.3/32), 1 Paths
1/1: IPv4, 'default':4U, Gi0/1/0/0, nh=1.12.1.2, lbl=0, tun_id=0, flags=0x0 ()
130, (IPv4, 'default':4U, 4.4.4.4/32), 1 Paths
1/1: IPv4, 'default':4U, Gi0/1/0/0, nh=1.12.1.2, lbl=200, tun_id=0, flags=0x0 ()
Verifies that the MPLS static configuration has taken effect, and the label forwarding is taking place.
Identify and Clear Label Discrepancy
During configuring or de-configuring static labels or a label range, a label discrepancy can get generated
when:
•
A static label is configured for an IP prefix (per VRF) that already has a binding with a dynamic label.
•
A static label is configured for an IP prefix, when the same label value is dynamically allocated to another
IP prefix.
Complete these steps to identify and clear the discrepancies.
Step 1
To identify a label discrepancy, execute one of these:
•
show mpls static local-label discrepancy
•
show log
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
109
Implementing MPLS Static Labeling
Identify and Clear Label Discrepancy

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