Displaying BFD for BGP Information......................................................................................................................154
Congure BFD for VRRP...............................................................................................................................................158
Related Conguration Tasks....................................................................................................................................158
Establishing Sessions with All VRRP Neighbors...................................................................................................158
Establishing VRRP Sessions on VRRP Neighbors................................................................................................159
Changing VRRP Session Parameters.................................................................................................................... 160
Disabling BFD for VRRP.......................................................................................................................................... 160
Congure BFD for VLANs.............................................................................................................................................160
Related Conguration Task...................................................................................................................................... 161
Establish Sessions with VLAN Neighbors.............................................................................................................. 161
Changing VLAN Session Parameters.....................................................................................................................162
Disabling BFD for VLANs.........................................................................................................................................162
Congure BFD for Port-Channels................................................................................................................................ 162
Related Conguration Tasks....................................................................................................................................162
Establish Sessions on Port-Channels.....................................................................................................................163
Changing Physical Port Session Parameters........................................................................................................ 163
Disabling BFD for Port-Channels............................................................................................................................164
Conguring Protocol Liveness...................................................................................................................................... 164
Troubleshooting BFD......................................................................................................................................................164
10 Border Gateway Protocol IPv4 (BGPv4)................................................................................................... 166
Autonomous Systems (AS)........................................................................................................................................... 166
Sessions and Peers........................................................................................................................................................ 168
Establish a Session...................................................................................................................................................168
Route Reectors.............................................................................................................................................................169
Communities............................................................................................................................................................. 170
BGP Attributes................................................................................................................................................................170
Best Path Selection Criteria.................................................................................................................................... 170
Weight........................................................................................................................................................................172
Local Preference.......................................................................................................................................................172
Multi-Exit Discriminators (MEDs)...........................................................................................................................173
Origin.......................................................................................................................................................................... 174
AS Path......................................................................................................................................................................175
Next Hop................................................................................................................................................................... 175
Multiprotocol BGP..........................................................................................................................................................175
Implement BGP with the Dell Networking OS............................................................................................................ 176
Additional Path (Add-Path) Support...................................................................................................................... 176
Advertise IGP Cost as MED for Redistributed Routes........................................................................................ 176
Ignore Router-ID for Some Best-Path Calculations..............................................................................................177
Four-Byte AS Numbers............................................................................................................................................177
AS4 Number Representation...................................................................................................................................177
AS Number Migration...............................................................................................................................................179
BGP4 Management Information Base (MIB)........................................................................................................180
Important Points to Remember.............................................................................................................................. 180
Conguration Information.............................................................................................................................................. 181
BGP Conguration.......................................................................................................................................................... 181
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