Administrator Guide
Configuration Task List for Prefix Lists......................................................................................................................115
ACL Remarks.......................................................................................................................................................................118
Configuring a Remark...................................................................................................................................................118
Deleting a Remark.........................................................................................................................................................118
ACL Resequencing............................................................................................................................................................. 119
Resequencing an ACL or Prefix List...........................................................................................................................119
Route Maps........................................................................................................................................................................ 120
Logging of ACL Processes................................................................................................................................................ 121
Guidelines for Configuring ACL Logging.................................................................................................................... 121
Configuring ACL Logging............................................................................................................................................ 122
Flow-Based Monitoring..................................................................................................................................................... 122
Enabling Flow-Based Monitoring................................................................................................................................124
Configuring UDF ACL........................................................................................................................................................ 124
Configuring IP Mirror Access Group................................................................................................................................127
Sample Configuration...................................................................................................................................................127
Example of viewing IP mirror–access–group applied to an Interface...................................................................127
8 Bidirectional Forwarding Detection (BFD)................................................................................... 129
How BFD Works.................................................................................................................................................................129
BFD Packet Format..................................................................................................................................................... 130
BFD Sessions.................................................................................................................................................................131
BFD Three-Way Handshake....................................................................................................................................... 132
Session State Changes................................................................................................................................................133
Important Points to Remember........................................................................................................................................133
Configure BFD....................................................................................................................................................................133
Configure BFD for Physical Ports.............................................................................................................................. 134
Configure BFD for Static Routes...............................................................................................................................135
Configure BFD for IPv6 Static Routes...................................................................................................................... 138
Configure BFD for OSPF............................................................................................................................................ 140
Configure BFD for OSPFv3........................................................................................................................................ 145
Configure BFD for IS-IS...............................................................................................................................................147
Configure BFD for BGP...............................................................................................................................................149
Configure BFD for VRRP............................................................................................................................................ 156
Configuring Protocol Liveness....................................................................................................................................158
9 Border Gateway Protocol (BGP)................................................................................................ 159
BGP IP version 4 (BGPv4) Overview............................................................................................................................. 159
BGP Autonomous Systems........................................................................................................................................ 159
AS4 Number Representation.......................................................................................................................................161
Four-Byte AS Numbers...............................................................................................................................................163
BGP router ID............................................................................................................................................................... 163
Sessions and Peers...................................................................................................................................................... 163
Establish a Session.......................................................................................................................................................163
BGP Attributes for selecting Best Path.................................................................................................................... 164
Multiprotocol BGP....................................................................................................................................................... 169
BGP global and address family configuration........................................................................................................... 170
Implement BGP with Dell EMC Networking OS....................................................................................................... 171
Configuration Information........................................................................................................................................... 174
Basic BGP configuration tasks......................................................................................................................................... 174
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