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Nokia 7705 SAR-W Series User Manual
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Label Distribution Protocol
454
MPLS Guide
© 2022 Nokia.
Use subject to Terms available at: www.nokia.com
3HE 18686 AAAB TQZZA
5.12.2.1
Configuration Commands
•
Generic Commands
•
LDP Global Commands
•
Interface Parameters Commands
•
Session Parameters Commands
•
Targeted Session Commands
453
455
Table of Contents
Table of Contents
3
Preface
15
About this Guide
15
Audience
15
Technical Support
16
7705 SAR MPLS Configuration Process
17
MPLS and RSVP-TE
19
Overview
20
Mpls
21
Traffic Engineering for MPLS
21
TE Metric and IGP Metric
22
MPLS Label Stack
23
Table 2 Packet/Label Field Description
23
Figure 1 Label Structure
23
Label Values
24
Figure 2 Label Packet Placement
24
Table 3 Ingress Label Values (Pop Labels)
25
MPLS Entropy Labels
26
Overview of Entropy Labels
26
Table 4 Egress Label Values (Push Labels)
26
Table 5 Summary of Entropy Label Support
28
Inserting and Processing the Entropy Label
29
Entropy Label on OAM Packets
31
Segment Routing Entropy Label and Ipsec, ESPI Hashing, and NGE
31
Entropy Label Configuration
31
Figure 3 Entropy Label and Load Balancing
32
Label Edge and Label Switch Routers
33
LSP Types
34
RSVP and RSVP-TE
36
RSVP-TE Overview
36
Figure 4 Establishing Lsps
37
Figure 5 LSP Using RSVP-TE Path Setup
37
Using RSVP-TE for MPLS
38
RSVP-TE Extensions for MPLS
38
Hello Protocol
39
Authentication
40
Non-Router ID Addresses as Destinations and Hops
42
RSVP LSP and LDP FEC Statistics
43
Configuring RSVP LSP Statistics at Ingress LER
44
Configuring RSVP LSP Statistics at Egress LER
45
Configuring LDP FEC Statistics
46
RSVP-TE Signaling
48
General Attributes of RSVP-TE
48
Bidirectional Forwarding Detection
49
Timers
49
LSP Resignal Limit
50
RSVP-TE Message Pacing
50
RSVP-TE Overhead Refresh Reduction
51
RSVP-TE Reservation Styles
52
Implicit Null Label
52
RSVP-TE Entropy Labels
53
LSP Redundancy
54
Make-Before-Break (MBB) Procedures for LSP and Path Parameter Configuration Changes
55
Automatic Creation of RSVP-TE Lsps
56
Automatic Creation of RSVP-TE LSP Mesh (Auto-LSP)
56
Multi-Area and Multi-Instance Support
58
Mesh LSP Name Encoding
59
Automatic Creation of an RSVP-TE Single-Hop LSP
59
Automatic ABR Selection for Inter-Area Lsps
61
Figure 6 Automatic ABR Selection for Inter-Area LSP
62
Rerouting of Inter-Area Lsps
63
Behavior of MPLS Options in Inter-Area Lsps
64
Inter-Area LSP Support of OSPF Virtual Links
65
ABR FRR Protection for Inter-Area LSP
65
Figure 7 ABR Protection Using Dynamic Bypass LSP
66
Preference Option for Standby Secondary LSP Paths
68
RSVP-TE Fast Reroute (FRR)
69
FRR Terminology
70
Table 6 FRR Terminology
70
Bypass Resignal Timer
72
FRR Behavior
73
Dynamic and Manual Bypass Lsps
74
Bypass LSP Selection Rules for the PLR
74
Figure 8 Bypass Tunnel Node Example
75
FRR Node Protection (Facility Backup)
77
Admin Group Support on Facility Bypass Backup Lsps
78
Figure 9 FRR Node-Protection Example
78
FRR over Unnumbered Interfaces
79
Shared Risk Link Groups
80
Srlgs for Secondary LSP Paths
80
Srlgs for FRR LSP Paths
81
Disjoint and Non-Disjoint Paths
81
Enabling Disjoint Backup Paths
82
Figure 10 Disjoint Primary and Secondary Lsps
83
Figure 11 Disjoint FRR Bypass Lsps
84
RSVP-TE Graceful Shutdown
85
RSVP-TE Support for Unnumbered Interfaces
86
PCEP Support for RSVP-TE Lsps
88
Segment Routing with Traffic Engineering (SR-TE)
89
SR-TE Support
90
SR-TE LSP Instantiation
91
PCC-Initiated and PCC-Controlled Lsps
93
Figure 12 Multi-Plane te with Node Protection
97
PCC-Initiated and PCE-Computed/Controlled LSP
98
SR-TE LSP Path Computation
100
Service and Shortcut Application SR-TE Label Stack Check
102
Table 7 Parameter Values for Frr-Overhead
102
SR-TE LSP Paths Using Explicit Sids
104
SR-TE LSP Protection
105
Local Protection
107
End-To-End Protection
108
Seamless BFD for SR-TE Lsps
108
Configuration of S-BFD on SR-TE Lsps
109
Support for BFD Failure Action with SR-TE Lsps
110
S-BFD Operational Considerations
112
Static Route Resolution Using SR-TE Lsps
112
BGP Label Route Resolution Using SR-TE Lsps
113
Service Packet Forwarding Using SR-TE Lsps
113
Data Path Support
115
Figure 13 SR-TE LSP Label Stack Programming
116
SR-TE LSP Metric and MTU Settings
117
SR-TE Entropy Labels
119
Weighted ECMP by RSVP-TE or SR-TE Lsps
120
Weighted ECMP for VPRN Services with Auto-Bind
121
Weighted ECMP for EVPN
121
Weighted ECMP for Sdps
122
MPLS Service Usage
123
Service Destination Points
123
MPLS and RSVP-TE Configuration Process Overview
124
Figure 14 MPLS and RSVP-TE Configuration and Implementation Flow
124
Configuration Notes
125
Configuring MPLS and RSVP-TE with CLI
127
MPLS Configuration Overview
128
Router Interface
128
E-LSP for Differentiated Services
128
Paths
128
Lsps
129
Pseudowires
129
Signaling Protocol
130
Basic MPLS Configuration
131
Common Configuration Tasks
133
Configuring MPLS Components
133
Configuring Global MPLS Parameters
134
Configuring an MPLS Interface
135
Configuring MPLS Paths
136
Configuring an MPLS LSP
137
Configuring a Static LSP
137
Configuring a Fast-Retry Timer for Static Lsps
138
Configuring Manual Bypass Tunnels
138
Table 8 Disabled and Enabled Options for Bypass-Only
139
Figure 15 Manual Bypass Tunnels
139
Configuring RSVP-TE Parameters and Interfaces
140
Configuring RSVP-TE Message Pacing Parameters
141
MPLS Configuration Management Tasks
142
Deleting MPLS
142
Modifying MPLS Parameters
142
Modifying an MPLS LSP
143
Modifying MPLS Path Parameters
143
Modifying MPLS Static LSP Parameters
144
Deleting an MPLS Interface
144
RSVP-TE Configuration Management Tasks
146
Modifying RSVP-TE Parameters
146
Modifying RSVP-TE Message Pacing Parameters
147
Deleting an Interface from RSVP-TE
147
Configuring and Operating SR-TE
148
SR-TE Configuration Prerequisites
148
SR-TE LSP Configuration Overview
149
Configuring Path Computation and Control for SR-TE Lsps
150
Configuring Path Profile and Group for PCC-Initiated and PCE-Computed/Controlled Lsps
150
Configuring SR-TE LSP Label Stack Size
151
Configuring Adjacency SID Parameters
151
Configuring PCC-Controlled, PCE-Computed, and PCE-Controlled SR-TE Lsps
152
MPLS and RSVP-TE Command Reference
155
Command Hierarchies
155
MPLS Commands
156
RSVP-TE Commands
159
Show Commands
160
Clear Commands
161
Monitor Commands
161
Debug Commands
162
Command Descriptions
164
Configuration Commands (MPLS)
165
Configuration Commands (RSVP-TE)
217
Show Commands (MPLS)
233
Table 9 Router MPLS Admin-Group Field Descriptions
233
Table 10 Router MPLS Bypass-Tunnel Field Descriptions
234
Table 11 Router MPLS Interface Field Descriptions
236
Table 12 Router MPLS LSP Field Descriptions
239
Table 13 MPLS LSP Detailed Field Descriptions
240
Table 14 Router MPLS LSP Path Detail Field Descriptions
244
Table 15 Router MPLS LSP Path MBB Field Descriptions
248
Table 16 Router MPLS Auto LSP Field Descriptions
249
Table 17 Router MPLS LSP Template Field Descriptions
253
Table 18 Router MPLS Path Field Descriptions
256
Table 19 Router MPLS SRLG Group Field Descriptions
265
Table 20 Router MPLS Static LSP Field Descriptions
267
Table 21 Router MPLS Status Field Descriptions
269
Show Commands (MPLS-Labels)
271
Table 22 Router MPLS-Labels Label Field Descriptions
272
Table 23 Router MPLS-Labels Label Range Field Descriptions
273
Table 24 Router MPLS-Labels Summary Field Descriptions
273
Show Commands (Seamless BFD)
275
Show Commands (RSVP)
276
Table 25 Router RSVP-TE Interface Field Descriptions
277
Table 26 Router RSVP-TE Interface Detail Field Descriptions
278
Table 27 Router RSVP-TE Interface Statistics Field Descriptions
280
Table 28 Router RSVP-TE Neighbor Field Descriptions
282
Table 29 Router RSVP-TE Session Field Descriptions
284
Table 30 Router RSVP-TE Statistics Field Descriptions
284
Table 31 Router RSVP-TE Status Field Descriptions
286
Clear Commands
287
Monitor Commands
289
Debug Commands
296
Pcep
305
Introduction to the Path Computation Element (PCE) Communication Protocol (PCEP)
306
Figure 16 NSP Functional Modules
307
Figure 17 NRC-P Architecture
308
Base Implementation of Path Computation Elements (PCE)
310
Table 32 Base PCEP Tlvs, Objects, and Messages
310
PCEP Session Establishment and Maintenance
313
Figure 18 PCEP Session Initialization
313
PCEP Parameters
315
PCC Configuration
315
Stateful PCE
316
Table 33 PCEP Stateful PCE Extension Tlvs, Objects, and Messages
316
PCEP Extensions in Support of SR-TE Lsps
318
LSP Initiation
319
Table 34 PCEP Segment Routing Extension Objects and Tlvs
319
PCC-Initiated and PCE-Computed or PCE-Controlled Lsps
321
PCEP Support for RSVP-TE Lsps
324
RSVP-TE LSP Configuration for a PCC Router
324
Behavior of the LSP Path Update
326
Path Update with Empty ERO
327
Behavior of LSP MBB
327
PCC-Controlled Lsps
328
PCE-Computed Lsps
328
PCE-Controlled Lsps
329
Behavior of Secondary LSP Paths
332
PCE Path Profile Support
332
LSP Path Diversity and Bidirectionality Constraints
334
Table 35 PCEP Path Profile Extension Objects and Tlvs
335
NSP and VSR-NRC PCE Redundancy
337
Feature Configuration
337
NSP Ecosystem Redundancy
337
Figure 19 NSP Ecosystem Redundancy
338
NSP Cluster Redundancy
339
VSR-NRC Redundancy
339
PCC Behavior
340
Configuring RSVP-TE Lsps with PCEP Using the CLI
343
PCEP on the PCE Node and the PCC Node
343
Figure 20 Multi-Level IS-IS Topology in the NSP GUI
344
MPLS on the PCC Node
346
Figure 21 Primary and Secondary RSVP-TE LSP Paths in the NSP GUI
346
PCEP Configuration Command Reference
351
Command Hierarchies
351
PCEP Commands
352
Show Commands
352
Command Descriptions
353
PCEP Commands
354
Show Commands
359
Table 36 PCEP PCC Field Descriptions
359
Table 37 PCEP PCC Peer Field Descriptions
362
Table 38 PCEP PCC Status Field Descriptions
364
Label Distribution Protocol
367
Label Distribution Protocol
368
LDP and MPLS
369
BFD for T-LDP
370
LDP Architecture
370
LDP Subsystem Interrelationships
371
Memory Manager and LDP
371
Label Manager
371
LDP Configuration
372
Figure 22 LDP Subsystem Interrelationships
372
Logger
373
Service Manager
373
Execution Flow
373
Initialization
373
Session Lifetime
373
Label Exchange
375
Implicit Null Label
375
Other Reasons for Label Actions
375
Cleanup
376
LDP Filters
376
LDP FEC Statistics
377
Multi-Area and Multi-Instance Extensions to LDP
377
ECMP Support for LDP
378
Label Operations
381
Graceful Restart Helper
382
Graceful Handling of Resource Exhaustion
382
LDP Support for Unnumbered Interfaces
383
LDP Fast Reroute (FRR)
385
ECMP Vs FRR
387
IGP Shortcuts (RSVP-TE Tunnels)
387
LDP FRR Configuration
387
LDP-To-Segment Routing Stitching for Ipv4 /32 Prefixes (IS-IS)
388
Stitching in the LDP-To-SR Direction
390
Figure 23 Stitching in the LDP-To-SR Direction
390
Stitching in the SR-To-LDP Direction
391
TTL Propagation and ICMP Tunneling
393
LDP FRR Remote LFA and TI-LFA Backup Using an SR Tunnel for Ipv4 /32 Prefixes (IS-IS)
393
Feature Behavior
394
TCP MD5 Authentication
394
LDP Point-To-Multipoint Support
396
LDP Point-To-Multipoint Configuration
396
LDP Point-To-Multipoint Protocol
396
Make-Before-Break (MBB)
397
ECMP Support
397
Inter-AS Non-Segmented Mldp
397
LDP Recursive FEC Process
397
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
Oam
402
Figure 28 ECHO Request Target FEC Stack TLV
402
ECMP Support
403
Figure 29 ECMP Support
403
Intra-AS Non-Segmented Mldp
404
ABR Mofrr for Intra-AS
405
Interaction with an Inter-AS Non-Segmented Mldp Solution
405
Figure 30 Intra-AS Non-Segmented Topology
405
Multicast LDP Fast Upstream Switchover
406
Mldp Fast Upstream Switchover Configuration
406
Mldp Fast Upstream Switchover Behavior
407
Figure 31 Multicast LDP Fast Upstream Switchover
408
LDP Ipv6
410
Figure 32 LDP Adjacency and Session over an Ipv6 Interface
410
Link LDP
411
Targeted LDP
412
FEC Resolution
412
LDP Session Capabilities
413
LDP Adjacency Capabilities
414
IP Address and FEC Distribution
416
Figure 33 LDP Ipv6 Address and FEC Distribution Procedure
418
IGP and Static Route Synchronization with LDP
419
Figure 34 LDP Ipv6 Address and FEC Distribution Procedure
419
BFD Operation
420
Services Using SDP with an LDP Ipv6 FEC
421
Mirror Services
421
Configuration at Mirror Source Node
422
Configuration at Mirror Destination Node
422
OAM Support with LDP Ipv6
423
Interoperability
424
Interoperability with Implementations Compliant with Draft- Ietf-Mpls-Ldp-Ipv6
424
Interoperability with Implementations Compliant with RFC 5036 for Ipv4 LDP Control Plane Only
425
Upgrading from Ipv4 to Ipv6
425
Figure 35 Smooth Management Transition from Ipv4 to Ipv6
426
LDP Process Overview
427
Figure 36 LDP Configuration and Implementation
427
Configuration Notes
428
Configuring LDP with CLI
429
LDP Configuration Overview
430
Basic LDP Configuration
431
Common Configuration Tasks
432
Enabling LDP
432
Configuring Graceful Restart Helper Parameters
433
Applying Import and Export Policies
434
Configuring Interface Parameters
435
Specifying Targeted Session Parameters
436
Specifying Peer Parameters
437
Configuring LDP Support for Multicast VPN (MVPN)
438
Configuring LDP Support for LDP-To-SR Stitching
439
Enabling LDP Signaling and Services
439
LDP Configuration Management Tasks
441
Disabling LDP
441
Modifying Targeted Session Parameters
441
Modifying Interface Parameters
442
LDP Command Reference
445
Command Hierarchies
445
LDP Commands
446
Show Commands
448
Monitor Commands
451
Clear Commands
451
Debug Commands
451
Command Descriptions
453
Configuration Commands
454
Show Commands
482
Clear Commands
538
Monitor Commands
540
Debug Commands
548
Supported Standards and Protocols
579
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Nokia 7705 SAR-W Series Specifications
General
Brand
Nokia
Model
7705 SAR-W Series
Category
Network Router
Language
English
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