Connectivity Guide

Table Of Contents
Configuration Task List for Prefix Lists................................................................................................................ 115
ACL Remarks..................................................................................................................................................................... 118
Configuring a Remark................................................................................................................................................ 119
Deleting a Remark...................................................................................................................................................... 119
ACL Resequencing.......................................................................................................................................................... 120
Resequencing an ACL or Prefix List......................................................................................................................120
Route Maps........................................................................................................................................................................121
Logging of ACL Processes............................................................................................................................................ 122
Guidelines for Configuring ACL Logging.............................................................................................................. 122
Configuring ACL Logging......................................................................................................................................... 123
Flow-Based Monitoring.................................................................................................................................................. 123
Enabling Flow-Based Monitoring........................................................................................................................... 125
Configuring UDF ACL..................................................................................................................................................... 126
Configuring IP Mirror Access Group........................................................................................................................... 128
Sample Configuration................................................................................................................................................129
Example of viewing IP mirroraccessgroup applied to an Interface.......................................................... 129
Chapter 8: Bidirectional Forwarding Detection (BFD)................................................................ 130
How BFD Works...............................................................................................................................................................130
BFD Packet Format....................................................................................................................................................131
BFD Sessions.............................................................................................................................................................. 132
BFD Three-Way Handshake.................................................................................................................................... 133
Session State Changes.............................................................................................................................................134
Important Points to Remember....................................................................................................................................134
Configure BFD.................................................................................................................................................................. 134
Configure BFD for Physical Ports..........................................................................................................................135
Configure BFD for Static Routes........................................................................................................................... 136
Configure BFD for IPv6 Static Routes................................................................................................................. 140
Configure BFD for OSPF..........................................................................................................................................142
Configure BFD for OSPFv3..................................................................................................................................... 147
Configure BFD for IS-IS........................................................................................................................................... 149
Configure BFD for BGP.............................................................................................................................................151
Configure BFD for VRRP......................................................................................................................................... 158
Configuring Protocol Liveness................................................................................................................................160
Chapter 9: Border Gateway Protocol (BGP)............................................................................... 161
BGP IP version 4 (BGPv4) Overview..........................................................................................................................161
BGP Autonomous Systems...................................................................................................................................... 161
AS4 Number Representation.................................................................................................................................. 163
Four-Byte AS Numbers............................................................................................................................................ 165
BGP router ID............................................................................................................................................................. 165
Sessions and Peers....................................................................................................................................................165
Establish a Session.................................................................................................................................................... 165
BGP Attributes for selecting Best Path............................................................................................................... 166
Multiprotocol BGP...................................................................................................................................................... 171
BGP global and address family configuration......................................................................................................172
Implement BGP with Dell EMC Networking OS................................................................................................. 173
Configuration Information........................................................................................................................................176
Basic BGP configuration tasks......................................................................................................................................177
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