Glossary

Configuration Task List for Prefix Lists................................................................................................................ 119
ACL Remarks.................................................................................................................................................................... 122
Configuring a Remark............................................................................................................................................... 123
Deleting a Remark......................................................................................................................................................123
ACL Resequencing...........................................................................................................................................................124
Resequencing an ACL or Prefix List......................................................................................................................124
Route Maps.......................................................................................................................................................................125
Logging of ACL Processes............................................................................................................................................ 126
Guidelines for Configuring ACL Logging.............................................................................................................. 126
Configuring ACL Logging......................................................................................................................................... 127
Flow-Based Monitoring.................................................................................................................................................. 127
Enabling Flow-Based Monitoring........................................................................................................................... 129
Configuring UDF ACL..................................................................................................................................................... 130
Configuring IP Mirror Access Group........................................................................................................................... 132
Sample Configuration................................................................................................................................................133
Example of viewing IP mirror–access–group applied to an Interface.......................................................... 133
Chapter 8: Bidirectional Forwarding Detection (BFD)................................................................ 134
How BFD Works...............................................................................................................................................................134
BFD Packet Format...................................................................................................................................................135
BFD Sessions.............................................................................................................................................................. 136
BFD Three-Way Handshake.................................................................................................................................... 137
Session State Changes.............................................................................................................................................138
Important Points to Remember....................................................................................................................................138
Configure BFD.................................................................................................................................................................. 138
Configure BFD for Physical Ports..........................................................................................................................139
Configure BFD for Static Routes........................................................................................................................... 140
Configure BFD for IPv6 Static Routes................................................................................................................. 144
Configure BFD for OSPF..........................................................................................................................................146
Configure BFD for OSPFv3......................................................................................................................................151
Configure BFD for IS-IS........................................................................................................................................... 154
Configure BFD for BGP............................................................................................................................................156
Configure BFD for VRRP......................................................................................................................................... 162
Configuring Protocol Liveness................................................................................................................................165
Chapter 9: Border Gateway Protocol (BGP)............................................................................... 166
BGP IP version 4 (BGPv4) Overview......................................................................................................................... 166
BGP Autonomous Systems......................................................................................................................................166
AS4 Number Representation.................................................................................................................................. 168
Four-Byte AS Numbers............................................................................................................................................ 170
BGP router ID..............................................................................................................................................................170
Sessions and Peers....................................................................................................................................................170
Establish a Session.................................................................................................................................................... 170
BGP Attributes for selecting Best Path................................................................................................................ 171
Multiprotocol BGP..................................................................................................................................................... 176
BGP global and address family configuration...................................................................................................... 177
Implement BGP with Dell EMC Networking OS................................................................................................. 178
Configuration Information.........................................................................................................................................181
Basic BGP configuration tasks..................................................................................................................................... 182
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Contents