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Cisco CRS Configuration Guide

Cisco CRS
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CHAPTER 4
Implementing RSVP for MPLS-TE and MPLS
O-UNI
The Multiprotocol Label Switching (MPLS) is a standards-based solution, driven by the Internet Engineering
Task Force (IETF), devised to convert the Internet and IP backbones from best-effort networks into
business-class transport media.
Resource Reservation Protocol (RSVP) is a signaling protocol that enables systems to request resource
reservations from the network. RSVP processes protocol messages from other systems, processes resource
requests from local clients, and generates protocol messages. As a result, resources are reserved for data
flows on behalf of local and remote clients. RSVP creates, maintains, and deletes these resource reservations.
RSVP provides a secure method to control quality-of-service (QoS) access to a network.
MPLS Traffic Engineering (MPLS-TE) and MPLS Optical User Network Interface (MPLS O-UNI) use
RSVP to signal label switched paths (LSPs).
Feature History for Implementing RSVP for MPLS-TE and MPLS O-UNI
ModificationRelease
This feature was introduced.Release 2.0
No modification.Release 3.0
Support was added for ACL-based prefix filtering.Release 3.2
No modification.Release 3.3.0
No modification.Release 3.4.0
Support was added for RSVP authentication.Release 3.4.1
No modification.Release 3.5.0
No modification.Release 3.6.0
No modification.Release 3.7.0
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
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Cisco CRS Specifications

General IconGeneral
Operating SystemCisco IOS XR
Product TypeCore Router
Form FactorModular Chassis
DimensionsVaries by chassis type
WeightVaries by chassis type
ArchitectureDistributed
Switch FabricMulti-stage
Interface SupportEthernet, SONET/SDH, OTN
Interfaces/PortsVaries by line card
Port DensityVaries by line card
Routing ProtocolBGP, IS-IS, OSPF, MPLS
ManagementCLI, SNMP
Power SupplyRedundant, hot-swappable
CoolingRedundant, Hot-swappable Fan Trays
Supported ProtocolsIPv4, IPv6, MPLS
Management InterfacesEthernet, console
Security FeaturesACLs

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