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308 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
53-1003031-02
LDP outbound FEC filtering
2
Configuration steps
Follow the listed steps to configure LDP outbound FEC filter.
1. Create a prefix-list to permit or deny required set of FECs.
2. Go to the ldp config mode available on the router mpls config mode.
3. Set the above created prefix-list in the global or per neighbor outbound fec filter configuration.
Configuration example
For Global outbound FEC filter configuration
Example: To set LDP to prevent advertisement of FEC 10.44.44.44/32 while allowing all other
FECs to all neighbors follow the listed configuration steps.
Brocade(config)# ip prefix-list list-abc deny 10.44.44.44/32
Brocade(config)# ip prefix-list list-abc permit 0.0.0.0/0 ge 32
Brocade(config)# router mpls
Brocade(config-mpls)# ldp
Brocade(config-mpls-ldp)# filter-fec list-abc out
Syntax: [no] filter-fec prefix-list out
Parameters:
prefix-list
Prefix-list specifying the prefixes.
out
Specifies outbound-fec-filter configuration.
For per neighbor outbound FEC filter configuration
Example: To set LDP to prevent advertisement of FEC 10.44.44.44/32 while allowing all other
FECs to neighbor 10.12.12.12 follow the listed configuration steps.
Brocade(config)# ip prefix-list list-abc deny 10.44.44.44/32
Brocade(config)# ip prefix-list list-abc permit 0.0.0.0/0 ge 32
Brocade(config)# router mpls
Brocade(config-mpls)# ldp
Brocade(config-mpls-ldp)# session 10.12.12.12 filter-fec list-abc out
Syntax: [no] session peer-ip filter-fec prefix-list out
Parameters:
session
The session keyword specifies the per session configuration.
peer-ip
The peer-ip parameter is the peer IP of the LDP to which the filter needs to be applied.
out
The out keyword specifies the outbound-fec-filter configuration.
- Multi-Service IronWare 1
- Document History 2
- Contents 3
- 53-1003031-02 10
- Chapter 5 IP over MPLS 11
- Chapter 7 Routing over VPLS 16
- About This Document 19
- Supported software 20
- Document conventions 21
- Notice to the reader 22
- Related publications 22
- In this chapter 23
- Overview 25
- How MPLS works 28
- Types of LSPs 31
- MPLS label header encoding 32
- MPLS interfaces 36
- Traffic engineering database 37
- • The link is half duplex 38
- Refresh messages 41
- Admission control 42
- Bandwidth allocation 42
- LSP preemption 43
- P2MP LSP mechanism 48
- Prerequisites and limitations 49
- Scalability limitations 49
- Benefits of P2MP 50
- Source-to-leaf sub-LSP 51
- Grafting 52
- RSVP soft preemption 53
- Frequently used terms 54
- Detailed command information 55
- Display output 56
- Show mpls lsp extensive 57
- Show mpls rsvp session ppend 59
- Show mpls interface 59
- Scalability 60
- Auto-bandwidth for RSVP LSPs 61
- Template-based configuration 66
- Setting the minimum bandwidth 67
- Underflow-limit 68
- • sample-recording 71
- • underflow-limit 71
- Field output Description 73
- Finding a detour at a PLR 85
- Failover sequence 86
- Configuring a protected LSP 88
- Configuring a bypass LSP 88
- • The protected LSP 89
- FIGURE 16 Adaptive bypass LSP 91
- • bandwidth 94
- • exclude-any 94
- • facility-backup 94
- Global Revertiveness 95
- Deleting CSPF groups 101
- node 10.7.7.3 102
- node 10.7.7.8 102
- MPLS CSPF fate-sharing group 106
- Global configuration 107
- Brocade(config-mpls-policy)# 109
- Brocade(config)# router mpls 109
- Brocade(config-mpls)# policy 109
- MPLS enabled interface 110
- VPLS CPU protection 111
- Reverse path forwarding 112
- Port mirroring 112
- Protocol-based VLANs 113
- Class of Service (CoS) 113
- Configuring MPLS 114
- • filter-inter-as-routes 119
- • filter-intra-as-ibgp routes 119
- • RSVP-signaled LSPs 124
- • LDP signaled LSPs 124
- Release Command history 126
- FIGURE 18 Single-hop LSP 128
- Global RSVP parameters 130
- RSVP message authentication 131
- RSVP reliable messaging 132
- RSVP refresh reduction 133
- RSVP IGP synchronization 135
- Limitations 136
- Show command output 137
- Enhanced show commands 138
- Show mpls rsvp igp-sync 138
- Show mpls rsvp igp-sync lsp 140
- Show mpls lsp 142
- Setting up signaled LSPs 148
- Setting up paths 149
- Modifying a path 150
- Deleting a path 150
- Creating an LSP 152
- Specifying the egress LER 152
- Configuring path selection 155
- Assigning a metric to the LSP 159
- LDP tunnel metric 161
- FRR bypass LSPs 163
- Resetting LSPs 164
- Resetting Bypass LSPs 164
- Link protection for FRR 166
- FIGURE 22 Node protection 167
- Command Section 168
- Output field Description 170
- Release Command history 172
- Configuring an adaptive LSP 173
- Reoptimizing LSPs 174
- Static transit LSP 175
- Configuration example 176
- Functional Considerations 177
- Configuration commands 177
- Static-lsp transit 177
- In-label 178
- Next-hop 178
- Out-label 178
- Show Commands 180
- Show mpls label-range 181
- Show mpls summary 182
- Show mpls forwarding 183
- Show mpls config 183
- Show run 184
- Syslog message display output 184
- Specifying a bypass LSP 188
- Reoptimizing a bypass LSP 189
- Dynamic Bypass LSPs 191
- Bypass LSP terminology 192
- Configuration considerations 194
- Creating a dynamic bypass LSP 195
- Configuration steps 197
- Network diagram 197
- Enabling all interfaces 198
- Setting the reoptimizer-timer 200
- Specifying the name prefix 201
- Setting the priority 201
- Configuring non-adaptive LSPs 202
- Setting the reoptimize timer 203
- Show commands 203
- Sample configurations 207
- Supported scenarios 207
- RSVP LSP with FRR 214
- FIGURE 39 220
- Backward compatibility 221
- Commands 222
- Related 226
- IP Traceroute over MPLS 228
- Standard traceroute 229
- Configuration examples 235
- MPLS LDP-IGP synchronization 239
- • Hold down time 244
- • The normal IP metric 245
- This Field... Displays 248
- Displaying MPLS statistics 249
- This field... Displays 250
- LSP test1 254
- LSP test2 254
- Example 257
- CLI parameter Description 260
- • manual 264
- • unconditional 264
- Displaying path information 266
- This column... Displays 267
- • [e 268
- Displaying RSVP information 270
- Displaying the RSVP version 271
- Field Description 272
- • Time stamp 276
- Displaying RSVP statistics 279
- Displaying in the brief mode 287
- Displaying in the detail mode 288
- Transit LSP statistics 291
- Clearing MPLS statistics 294
- Clearing MPLS RSVP sessions 295
- MPLS sample configurations 296
- LSP with redundant paths 296
- Router R1 297
- Router R2 297
- Router R3 298
- Examples of MPLS bypass LSP 307
- • Bypass LSP xmr1-by is up 312
- Syntax: show mpls lsp name 313
- LDP overview 319
- LDP Inbound-FEC filtering 323
- Displaying FEC information 324
- Syntax: show mpls ldp 325
- TABLE 41 326
- Example: 327
- TABLE 42 328
- Sample Configurations 329
- LDP outbound FEC filtering 331
- Command output Description 335
- Label withdrawal delay 350
- Upgrade to R05.5.00 351
- Downgrade from R05.5.00 351
- LDP ECMP for transit LSR 353
- MPLS OAM support for LDP ECMP 355
- LDP ECMP LER 357
- • L – LDP 363
- • R – RSVP 363
- Brocade(config-mpls)# ldp 370
- LDP message authentication 373
- Resetting LDP neighbors 374
- LDP Graceful Restart (GR) 384
- Graceful restart procedure 385
- Graceful restart scenarios 387
- LDP ECMP (transit only) 388
- LDP over RSVP (transit only) 388
- LDP over GRE (transit only) 388
- LDP GR configuration examples 389
- Setting the keepalive timeout 390
- Background 392
- Enabling LDP over RSVP 395
- Enabling TTL propagation 399
- RSVP-TE Hello 400
- • Hello Message 401
- • Hello REQUEST object 401
- • Hello ACK object 401
- Risk assessment 402
- TABLE 46 405
- Field name Description 409
- Description 415
- Field Description 418
- P2MP Capable : Yes 419
- Displaying LDP information 424
- • Targeted 431
- Sample LDP configurations 447
- MPLS over GRE tunnel 451
- LDP LSP over GRE tunnel 452
- LDP VPLS over a GRE tunnel 453
- Router B configuration 456
- Router C configuration 456
- Router D configuration 457
- •lsr-id A.B.C.D 460
- •show mpls ldp 460
- •show mpls ldp fec prefix 460
- Release Modification 463
- Release Command History 464
- How VPLS works 474
- Configuring VPLS instances 477
- Creating a VPLS instance 478
- Specifying VPLS peers 481
- Setting the VPLS VC mode 482
- VPLS raw pass through mode 483
- VPLS tagged mode 488
- QoS for VPLS traffic 490
- LSP load balancing 493
- VPLS LSP load balancing 494
- TABLE 72 497
- Specifying the VPLS VC type 503
- Configuring VPLS tagged mode 504
- Syntax: show mpls vpls detail 505
- CPU packet limiting 509
- Multicast traffic processing 509
- Specifying a VPLS MTU 512
- Special considerations 513
- Enabling MPLS VPLS traps 514
- VPLS extended counters 514
- Local VPLS 517
- CoS behavior for Local VPLS 518
- Displaying VPLS information 520
- VPLS LDP 535
- MTU mismatched 536
- No remote VC label 536
- LDP session down 537
- No local label resource 537
- MPLS LDP show commands 538
- Issues with timers 539
- Solution 539
- Scaling support 540
- How MPLS VLL works 549
- MPLS VLL packet encoding 550
- QoS for VLL traffic 551
- Tag Mode 555
- Outgoing Packet 555
- Raw Mode 555
- Configuring MPLS VLLs 557
- Brocade(config-mpls-vll)# 558
- Specifying a VLL peer 559
- Specifying a VLL endpoint 559
- Specifying a VLL MTU 565
- Generating traps for VLLs 565
- VLL extended counters 567
- Layer 2 ACLs 571
- Sample MPLS VLL configuration 579
- Local VLL 582
- Local VLL QoS 586
- CoS behavior for Local VLL 587
- Configuring Local VLL 588
- Local VLL extended counters 591
- VLL raw-pass-through overview 598
- Packet handling behavior 599
- Customer requirements 601
- Related command Description 603
- IP over MPLS 607
- BGP shortcuts 608
- Examples of next-hop MPLS 609
- • Disabling next-hop MPLS 610
- Specifying metrics 611
- Enable BGP ECMP 611
- Enable next-hop MPLS 612
- Enable LSP-metric comparison 612
- LDP route injection 614
- LDP route injection example 615
- BGP MPLS metric follow IGP 619
- Feature information 620
- Limitation 620
- IS-IS shortcuts 621
- The announce metric 622
- The relative metric 622
- Configuration notes 623
- Configuration tasks 624
- Example configurations 626
- Clearing IS-IS shortcuts 628
- Ignore LSP metric 629
- Show command support 630
- IP over MPLS statistics 634
- Syntax: show mpls ldp traffic 635
- Configuring BGP or MPLS VPNs 637
- What is a BGP or MPLS VPN 639
- BGP or MPLS VPNs 640
- Draft standards 641
- MIB support 641
- BGP or MPLS VPN operation 642
- Configuring BGP VPNs on a PE 644
- Brocade(config)# vrf VPN1 645
- Brocade(config)# 645
- Brocade(config-vrf)# rd 3:6 645
- ECMP forwarding for IP VPN 651
- Setting up LSPs per VRF 653
- Configuring OSPF sham links 654
- Brocade# clear arp vrf blue 657
- (default) 658
- Brocade(config)# vrf blue 660
- Ping VRF 661
- Traceroute VRF 661
- Generating traps for VRFs 662
- BGP4 summary information 665
- Displaying the best routes 680
- BGP VPNv4 attribute entries 694
- Displaying route details 715
- Displaying VRF information 717
- Displaying OSPF sham links 726
- FIGURE 73 IBGP example 733
- EBGP for route exchange 734
- Brocade(config)# router bgp 735
- EBGP to CE network example 736
- CE 1 configuration 736
- CE 5 configuration 736
- PE 1 configuration 737
- PE 4 configuration 738
- Static route to CE example 740
- RIP for route exchange 742
- Brocade(config)# router rip 743
- RIP to CE example 744
- OSPF for route exchange 747
- OSPF to CE example 749
- Cooperative route filtering 752
- OSPF sham links 757
- PE 2 configuration 758
- Glossary 764
- Routing over VPLS 765
- FIGURE 86 Routing over VPLS 766
- FIGURE 87 766
- Routing over VPLS components 767
- Protocol Support 769
- VE over VPLS sample topology 771
- Configuration Considerations 772
- Migration considerations 772
- Configuring VE over VPLS 773
- VRRP/VRRP-E support 774
- Single homing topology 776
- Dual homing topology 777
- ACL Support for VE over VPLS 778
- Configuration task See 786
- Adding a loopback interface 787
- Enabling VPLS auto-discovery 793
- • All BGP4 neighbors 795
- • A specific neighbor 795
- • A specific peer group 795
- Example configuration 796
- • VPLS auto-discovered peers 799
- Viewing neighbor connections 804
- VPLS LSP Load Balancing 816
- Feature overview 816
- Assumptions and dependencies 817
- CAM2PRAM Data Format 822
- 6PE over MPLS 823
- 6PE over MPLS operation 824
- Configuring 6PE 826
- CE1 configuration 828
- 6PE1 configuration 828
- 6PE2 configuration 829
- CE2 configuration 829
- Displaying 6PE information 830
- Displaying the 6PE summary 838
- Clearing 6PE information 841
- CoS behavior for 6PE packets 842
- 6VPE Routing 843
- Configuring 6VPE 844
- FIGURE 97 6VPE with P router 845
- CE-A1 Configuration 847
- PE-1 Configuration 847
- P- Configuration 848
- PE-2 Configuration 849
- Displaying 6VPE information 850
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