Configuration manual

Configure BFD................................................................................................................................... 141
Configure BFD for Physical Ports............................................................................................... 142
Configure BFD for Static Routes.................................................................................................145
Configure BFD for OSPF..............................................................................................................147
Configure BFD for OSPFv3......................................................................................................... 150
Configure BFD for IS-IS............................................................................................................... 151
Configure BFD for BGP............................................................................................................... 154
Configure BFD for VRRP..............................................................................................................161
Configuring Protocol Liveness................................................................................................... 164
Troubleshooting BFD..................................................................................................................164
10 Border Gateway Protocol IPv4 (BGPv4).................................................... 166
Autonomous Systems (AS)................................................................................................................166
Sessions and Peers............................................................................................................................168
Establish a Session.......................................................................................................................169
Route Reflectors................................................................................................................................169
BGP Attributes................................................................................................................................... 170
Best Path Selection Criteria......................................................................................................... 171
Weight.......................................................................................................................................... 173
Local Preference..........................................................................................................................173
Multi-Exit Discriminators (MEDs)................................................................................................ 174
Origin............................................................................................................................................175
AS Path......................................................................................................................................... 176
Next Hop......................................................................................................................................176
Multiprotocol BGP............................................................................................................................. 177
Implement BGP with Dell Networking OS........................................................................................177
Additional Path (Add-Path) Support............................................................................................177
Advertise IGP Cost as MED for Redistributed Routes.................................................................177
Ignore Router-ID for Some Best-Path Calculations..................................................................178
Four-Byte AS Numbers................................................................................................................178
AS4 Number Representation.......................................................................................................179
AS Number Migration..................................................................................................................180
BGP4 Management Information Base (MIB).............................................................................. 182
Important Points to Remember..................................................................................................182
Configuration Information................................................................................................................183
BGP Configuration............................................................................................................................ 183
Enabling BGP...............................................................................................................................184
Configuring AS4 Number Representations................................................................................188
Configuring Peer Groups............................................................................................................190
Configuring BGP Fast Fall-Over..................................................................................................192
Configuring Passive Peering....................................................................................................... 194
Maintaining Existing AS Numbers During an AS Migration........................................................195