White Papers

Table Of Contents
BGP Attributes for selecting Best Path............................................................................................................... 170
Multiprotocol BGP..................................................................................................................................................... 175
BGP global and address family configuration......................................................................................................176
Implement BGP with Dell EMC Networking OS..................................................................................................177
Configuration Information........................................................................................................................................180
Basic BGP configuration tasks...................................................................................................................................... 181
Prerequisite for configuring a BGP network........................................................................................................181
Restrictions.................................................................................................................................................................. 181
Enabling BGP............................................................................................................................................................... 181
Enabling four-byte autonomous system numbers............................................................................................. 183
Changing a BGP router ID....................................................................................................................................... 184
Configuring AS4 Number Representations..........................................................................................................184
Configuring a BGP peer........................................................................................................................................... 185
Example-Configuring BGP routing between peers............................................................................................186
BGP peer group..........................................................................................................................................................187
Advanced BGP configuration tasks.............................................................................................................................194
Route-refresh and Soft-reconfiguration.............................................................................................................. 194
Aggregating Routes...................................................................................................................................................196
Filtering BGP...............................................................................................................................................................198
Configuring BGP Fast Fall-Over............................................................................................................................203
Configuring Passive Peering.................................................................................................................................. 205
Enabling Graceful Restart.......................................................................................................................................205
Redistributing Routes.............................................................................................................................................. 206
Enabling Additional Paths........................................................................................................................................207
Configuring IP Community Lists............................................................................................................................208
Configuring an IP Extended Community List..................................................................................................... 209
Configure BGP attributes........................................................................................................................................ 210
Enabling Multipath..................................................................................................................................................... 213
Route Reflectors........................................................................................................................................................ 214
Enabling Route Flap Dampening.............................................................................................................................215
Changing BGP keepalive and hold timers............................................................................................................ 217
Setting the extended timer..................................................................................................................................... 218
Enabling or disabling BGP neighbors.....................................................................................................................218
Route Map Continue................................................................................................................................................. 219
Configuring BGP Confederations..........................................................................................................................220
Configuring a BGP VRF address family............................................................................................................... 220
Maintaining Existing AS Numbers During an AS Migration.............................................................................222
Allowing an AS Number to Appear in its Own AS Path................................................................................... 222
Enabling MBGP Configurations............................................................................................................................. 223
MBGP support for IPv6...........................................................................................................................................224
Configuring IPv6 MBGP between peers..............................................................................................................224
Example-Configuring IPv4 and IPv6 neighbors..................................................................................................224
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor...................................227
BGP Regular Expression Optimization................................................................................................................. 228
Debugging BGP......................................................................................................................................................... 228
Chapter 10: Content Addressable Memory (CAM)...................................................................... 231
CAM Allocation.................................................................................................................................................................231
Test CAM Usage............................................................................................................................................................. 233
View CAM-ACL Settings...............................................................................................................................................233
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