MPLS Guide
3HE 18686 AAAB TQZZA © 2022 Nokia.
Use subject to Terms available at: www.nokia.com
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List of Figures
3 MPLS and RSVP-TE......................................................................19
Figure 1 Label Structure ..........................................................................................23
Figure 2 Label Packet Placement............................................................................24
Figure 3 Entropy Label and Load Balancing............................................................32
Figure 4 Establishing LSPs......................................................................................37
Figure 5 LSP Using RSVP-TE Path Setup ..............................................................37
Figure 6 Automatic ABR Selection for Inter-Area LSP ............................................62
Figure 7 ABR Protection Using Dynamic Bypass LSP ............................................66
Figure 8 Bypass Tunnel Node Example ..................................................................75
Figure 9 FRR Node-Protection Example .................................................................78
Figure 10 Disjoint Primary and Secondary LSPs.......................................................83
Figure 11 Disjoint FRR Bypass LSPs ........................................................................84
Figure 12 Multi-plane TE with Node Protection .........................................................97
Figure 13 SR-TE LSP Label Stack Programming....................................................116
Figure 14 MPLS and RSVP-TE Configuration and Implementation Flow................124
Figure 15 Manual Bypass Tunnels ..........................................................................139
4 PCEP ............................................................................................305
Figure 16 NSP Functional Modules .........................................................................307
Figure 17 NRC-P Architecture .................................................................................308
Figure 18 PCEP Session Initialization .....................................................................313
Figure 19 NSP Ecosystem Redundancy .................................................................338
Figure 20 Multi-level IS-IS Topology in the NSP GUI ..............................................344
Figure 21 Primary and Secondary RSVP-TE LSP Paths in the NSP GUI...............346
5 Label Distribution Protocol .......................................................367
Figure 22 LDP Subsystem Interrelationships ..........................................................372
Figure 23 Stitching in the LDP-to-SR Direction .......................................................390
Figure 24 mLDP FEC for Single AS with Transit IPv4 Opaque ...............................398
Figure 25 mLDP FEC for Inter-AS with Recursive Opaque Value...........................399
Figure 26 Non-VPN mLDP with Recursive Opaque for Inter-AS.............................400
Figure 27 ASBRs Using EBGP Without IGP ...........................................................401
Figure 28 ECHO Request Target FEC Stack TLV...................................................402
Figure 29 ECMP Support.........................................................................................403
Figure 30 Intra-AS Non-segmented Topology .........................................................405
Figure 31 Multicast LDP Fast Upstream Switchover ...............................................408
Figure 32 LDP Adjacency and Session over an IPv6 Interface ...............................410
Figure 33 LDP IPv6 Address and FEC Distribution Procedure ...............................418
Figure 34 LDP IPv6 Address and FEC Distribution Procedure ...............................419
Figure 35 Smooth Management Transition From IPv4 to IPv6 ...............................426
Figure 36 LDP Configuration and Implementation...................................................427
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