Setup Guide

Four-Byte AS Numbers............................................................................................................................................176
BGP router ID............................................................................................................................................................176
Sessions and Peers...................................................................................................................................................176
Establish a Session....................................................................................................................................................177
BGP Attributes for selecting Best Path................................................................................................................. 177
Multiprotocol BGP....................................................................................................................................................182
BGP global and address family conguration........................................................................................................183
Implement BGP with Dell EMC Networking OS...................................................................................................185
Conguration Information........................................................................................................................................188
Basic BGP conguration tasks......................................................................................................................................188
Prerequisite for conguring a BGP network......................................................................................................... 188
Restrictions............................................................................................................................................................... 189
Enabling BGP............................................................................................................................................................ 189
Enabling four-byte autonomous system numbers.................................................................................................191
Changing a BGP router ID.......................................................................................................................................192
Conguring AS4 Number Representations........................................................................................................... 192
Conguring a BGP peer...........................................................................................................................................194
Example-Conguring BGP routing between peers..............................................................................................195
BGP peer group........................................................................................................................................................196
Advanced BGP conguration tasks.............................................................................................................................202
Route-refresh and Soft-reconguration............................................................................................................... 203
Aggregating Routes.................................................................................................................................................205
Filtering BGP.............................................................................................................................................................207
Conguring BGP Fast Fall-Over............................................................................................................................. 214
Conguring Passive Peering................................................................................................................................... 215
Enabling Graceful Restart........................................................................................................................................216
Redistributing Routes...............................................................................................................................................217
Enabling Additional Paths........................................................................................................................................ 218
Conguring IP Community Lists............................................................................................................................. 219
Conguring an IP Extended Community List....................................................................................................... 220
Congure BGP attributes........................................................................................................................................ 221
Enabling Multipath...................................................................................................................................................225
Route Reectors......................................................................................................................................................226
Enabling Route Flap Dampening............................................................................................................................ 227
Changing BGP keepalive and hold timers.............................................................................................................229
Setting the extended timer.................................................................................................................................... 230
Enabling or disabling BGP neighbors......................................................................................................................231
Route Map Continue............................................................................................................................................... 232
Conguring BGP Confederations.......................................................................................................................... 232
Conguring a BGP VRF address family.................................................................................................................233
Maintaining Existing AS Numbers During an AS Migration................................................................................ 234
Allowing an AS Number to Appear in its Own AS Path...................................................................................... 235
Enabling MBGP Congurations............................................................................................................................. 236
MBGP support for IPv6..........................................................................................................................................236
Conguring IPv6 MBGP between peers...............................................................................................................237
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