Reference Guide

Table Of Contents
VRF commands..........................................................................................................................................................263
Bidirectional Forwarding Detection............................................................................................................................ 268
BFD session states................................................................................................................................................... 268
BFD three-way handshake..................................................................................................................................... 269
BFD configuration..................................................................................................................................................... 270
Configure BFD globally.............................................................................................................................................270
BFD for BGP................................................................................................................................................................271
BFD commands..........................................................................................................................................................275
Border Gateway Protocol..............................................................................................................................................278
Sessions and peers................................................................................................................................................... 279
Route reflectors........................................................................................................................................................ 280
Multiprotocol BGP.................................................................................................................................................... 280
Attributes.....................................................................................................................................................................281
Selection criteria........................................................................................................................................................ 281
Weight and local preference...................................................................................................................................282
Multiexit discriminators............................................................................................................................................282
Origin............................................................................................................................................................................283
AS path and next-hop.............................................................................................................................................. 283
Best path selection................................................................................................................................................... 283
More path support....................................................................................................................................................284
Advertise cost............................................................................................................................................................284
4-Byte AS numbers...................................................................................................................................................284
AS number migration................................................................................................................................................285
Configure Border Gateway Protocol....................................................................................................................285
Enable BGP.................................................................................................................................................................286
Configure Dual Stack............................................................................................................................................... 288
Peer templates...........................................................................................................................................................289
Neighbor fall-over......................................................................................................................................................291
Configure password..................................................................................................................................................293
Fast external fallover................................................................................................................................................294
Passive peering..........................................................................................................................................................296
Local AS.......................................................................................................................................................................296
AS number limit..........................................................................................................................................................297
Redistribute routes................................................................................................................................................... 298
Additional paths.........................................................................................................................................................299
MED attributes.......................................................................................................................................................... 299
Local preference attribute...................................................................................................................................... 299
Weight attribute........................................................................................................................................................ 300
Enable multipath.........................................................................................................................................................301
Route-map filters.......................................................................................................................................................301
Route reflector clusters...........................................................................................................................................302
Aggregate routes...................................................................................................................................................... 302
Confederations.......................................................................................................................................................... 303
Route dampening...................................................................................................................................................... 304
Timers.......................................................................................................................................................................... 305
Neighbor soft-reconfiguration...............................................................................................................................305
BGP commands......................................................................................................................................................... 306
Equal cost multi-path.....................................................................................................................................................336
Load balancing........................................................................................................................................................... 336
ECMP commands......................................................................................................................................................337
Contents
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