Cisco CRS Configuration Guide

CHAPTER 7
Implementing GMPLS UNI
The Generalized Multiprotocol Label Switching (GMPLS) User Network Interface (UNI) creates a circuit
connection between two clients (UNI-C) of an optical network. This connection is achieved by signaling
exchanges between UNI Client (UNI-C) and UNI Network (UNI-N) nodes, where UNI-C nodes are router
nodes and UNI-N nodes are optical nodes.
A GMPLS overlay model is required to connect packet routers with the optical network in these scenarios:
•
Different groups within a service provider are responsible for managing packet and optical networks.
•
The optical and packet network are managed by different service providers.
•
There is a weak trust model between the entities operating the optical and packet networks.
Feature History for Implementing GMPLS UNI
ModificationRelease
This feature was introduced.Release 4.3.0
•
Prerequisites for Implementing GMPLS UNI, page 371
•
Restrictions for Implementing GMPLS UNI, page 372
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Information About Implementing GMPLS UNI, page 372
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How to Implement GMPLS UNI, page 374
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Configuration Examples for GMPLS UNI, page 390
•
Additional References, page 392
Prerequisites for Implementing GMPLS UNI
The following prerequisites are required to implement GMPLS UNI:
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
371

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