MPLS Guide
4 © 2022 Nokia.
Use subject to Terms available at: www.nokia.com
3HE 18686 AAAB TQZZA
3.5.1 Make-Before-Break (MBB) Procedures for LSP and Path
Parameter Configuration Changes ............................................................55
3.5.2 Automatic Creation of RSVP-TE LSPs......................................................56
3.5.3 Automatic Creation of RSVP-TE LSP Mesh (Auto-LSP)...........................56
3.5.3.1 Multi-Area and Multi-Instance Support ......................................................58
3.5.3.2 Mesh LSP Name Encoding .......................................................................59
3.5.4 Automatic Creation of an RSVP-TE Single-Hop LSP................................59
3.5.5 Automatic ABR Selection for Inter-area LSPs ...........................................61
3.5.5.1 Rerouting of Inter-area LSPs.....................................................................63
3.5.5.2 Behavior of MPLS Options in Inter-area LSPs ..........................................64
3.5.5.3 Inter-area LSP Support of OSPF Virtual Links ..........................................65
3.5.6 ABR FRR Protection for Inter-area LSP ....................................................65
3.6 Preference Option for Standby Secondary LSP Paths..............................68
3.7 RSVP-TE Fast Reroute (FRR) ..................................................................69
3.7.1 FRR Terminology ......................................................................................70
3.7.2 Bypass Resignal Timer .............................................................................72
3.7.3 FRR Behavior ............................................................................................73
3.7.4 Dynamic and Manual Bypass LSPs ..........................................................74
3.7.4.1 Bypass LSP Selection Rules for the PLR..................................................74
3.7.4.2 FRR Node Protection (Facility Backup).....................................................77
3.7.5 Admin Group Support on Facility Bypass Backup LSPs ...........................78
3.7.6 FRR Over Unnumbered Interfaces............................................................79
3.8 Shared Risk Link Groups...........................................................................80
3.8.1 SRLGs for Secondary LSP Paths..............................................................80
3.8.2 SRLGs for FRR LSP Paths .......................................................................81
3.8.3 Disjoint and Non-disjoint Paths..................................................................81
3.8.4 Enabling Disjoint Backup Paths.................................................................82
3.9 RSVP-TE Graceful Shutdown ...................................................................85
3.10 RSVP-TE Support for Unnumbered Interfaces..........................................86
3.11 PCEP Support for RSVP-TE LSPs............................................................88
3.12 Segment Routing with Traffic Engineering (SR-TE) ..................................89
3.12.1 SR-TE Support ..........................................................................................90
3.12.2 SR-TE LSP Instantiation............................................................................91
3.12.2.1 PCC-initiated and PCC-controlled LSPs ...................................................93
3.12.2.2 PCC-initiated and PCE-computed/controlled LSP.....................................98
3.12.3 SR-TE LSP Path Computation ................................................................100
3.12.3.1 Service and Shortcut Application SR-TE Label Stack Check .................102
3.12.4 SR-TE LSP Paths Using Explicit SIDs ......................
..............................104
3.12.5 SR-TE LSP Protection.............................................................................105
3.12.5.1 Local Protection.......................................................................................107
3.12.5.2 End-to-End Protection .............................................................................108
3.12.6 Seamless BFD for SR-TE LSPs .............................................................108
3.12.6.1 Configuration of S-BFD on SR-TE LSPs .................................................109
3.12.6.2 Support for BFD Failure Action with SR-TE LSPs...................................110
3.12.6.3 S-BFD Operational Considerations .........................................................112
3.12.7 Static Route Resolution Using SR-TE LSPs ...........................................112
3.12.8 BGP Label Route Resolution Using SR-TE LSPs ...................................113
3.12.9 Service Packet Forwarding Using SR-TE LSPs ......................................113
3.12.10 Data Path Support...................................................................................115
To Next Page
Loading...
Need help?
General
