Deployment Guide

Table Of Contents
Implement BGP with Dell EMC Networking OS..................................................................................................181
Configuration Information........................................................................................................................................184
Basic BGP configuration tasks..................................................................................................................................... 184
Prerequisite for configuring a BGP network....................................................................................................... 184
Restrictions................................................................................................................................................................. 185
Enabling BGP.............................................................................................................................................................. 185
Enabling four-byte autonomous system numbers..............................................................................................187
Changing a BGP router ID........................................................................................................................................187
Configuring AS4 Number Representations..........................................................................................................188
Configuring a BGP peer........................................................................................................................................... 189
Example-Configuring BGP routing between peers............................................................................................190
BGP peer group.......................................................................................................................................................... 191
Advanced BGP configuration tasks.............................................................................................................................197
Route-refresh and Soft-reconfiguration.............................................................................................................. 197
Aggregating Routes..................................................................................................................................................200
Filtering BGP.............................................................................................................................................................. 202
Configuring BGP Fast Fall-Over............................................................................................................................ 207
Configuring Passive Peering...................................................................................................................................208
Enabling Graceful Restart.......................................................................................................................................209
Redistributing Routes............................................................................................................................................... 210
Enabling Additional Paths......................................................................................................................................... 211
Configuring IP Community Lists..............................................................................................................................211
Configuring an IP Extended Community List...................................................................................................... 212
Configure BGP attributes........................................................................................................................................ 213
Enabling Multipath..................................................................................................................................................... 217
Route Reflectors........................................................................................................................................................ 217
Enabling Route Flap Dampening.............................................................................................................................219
Changing BGP keepalive and hold timers............................................................................................................ 221
Setting the extended timer..................................................................................................................................... 221
Enabling or disabling BGP neighbors.................................................................................................................... 222
Route Map Continue................................................................................................................................................ 223
Configuring BGP Confederations..........................................................................................................................224
Configuring a BGP VRF address family............................................................................................................... 224
Maintaining Existing AS Numbers During an AS Migration.............................................................................225
Allowing an AS Number to Appear in its Own AS Path................................................................................... 226
Enabling MBGP Configurations..............................................................................................................................227
MBGP support for IPv6........................................................................................................................................... 227
Configuring IPv6 MBGP between peers..............................................................................................................227
Example-Configuring IPv4 and IPv6 neighbors................................................................................................. 228
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor.................................. 230
BGP Regular Expression Optimization................................................................................................................. 232
Debugging BGP......................................................................................................................................................... 232
Chapter 10: Content Addressable Memory (CAM)......................................................................234
CAM Allocation................................................................................................................................................................ 234
Test CAM Usage............................................................................................................................................................. 236
View CAM-ACL Settings...............................................................................................................................................236
View CAM Usage.............................................................................................................................................................237
Configuring CAM Threshold and Silence Period..................................................................................................... 238
CAM Optimization...........................................................................................................................................................239
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