Users Guide

ManualsBrandsDell ManualsAccess PlatformsPowerSwitch S4820T

Conguration Information............................................................................................................................................... 183

BGP Conguration..........................................................................................................................................................183

Enabling BGP............................................................................................................................................................184

Conguring AS4 Number Representations................................................................................................................187

Conguring Peer Groups...........................................................................................................................................189

Conguring BGP Fast Fall-Over................................................................................................................................ 191

Conguring Passive Peering......................................................................................................................................193

Maintaining Existing AS Numbers During an AS Migration........................................................................................ 193

Allowing an AS Number to Appear in its Own AS Path..............................................................................................194

Enabling Graceful Restart......................................................................................................................................... 195

Enabling Neighbor Graceful Restart..........................................................................................................................196

Filtering on an AS-Path Attribute..............................................................................................................................196

Regular Expressions as Filters...................................................................................................................................198

Redistributing Routes............................................................................................................................................... 199

Enabling Additional Paths.........................................................................................................................................200

Conguring IP Community Lists...............................................................................................................................200

Conguring an IP Extended Community List.............................................................................................................201

Filtering Routes with Community Lists..................................................................................................................... 202

Manipulating the COMMUNITY Attribute................................................................................................................ 202

Changing MED Attributes........................................................................................................................................ 204

Changing the LOCAL_PREFERENCE Attribute....................................................................................................... 204

Changing the NEXT_HOP Attribute.........................................................................................................................205

Changing the WEIGHT Attribute..............................................................................................................................205

Enabling Multipath................................................................................................................................................... 206

Filtering BGP Routes................................................................................................................................................206

Filtering BGP Routes Using Route Maps.................................................................................................................. 207

Filtering BGP Routes Using AS-PATH Information................................................................................................... 208

Conguring BGP Route Reectors...........................................................................................................................208

Aggregating Routes................................................................................................................................................. 209

Conguring BGP Confederations............................................................................................................................. 209

Enabling Route Flap Dampening................................................................................................................................210

Changing BGP Timers...............................................................................................................................................212

Enabling BGP Neighbor Soft-Reconguration...........................................................................................................213

Route Map Continue.................................................................................................................................................214

Enabling MBGP Congurations.......................................................................................................................................214

BGP Regular Expression Optimization............................................................................................................................ 215

Debugging BGP.............................................................................................................................................................. 215

Storing Last and Bad PDUs.......................................................................................................................................216

Capturing PDUs........................................................................................................................................................ 217

PDU Counters...........................................................................................................................................................218

Sample Congurations....................................................................................................................................................218

11 Content Addressable Memory (CAM).........................................................................225

CAM Allocation.............................................................................................................................................................. 225

Test CAM Usage............................................................................................................................................................ 227

View CAM Proles..........................................................................................................................................................227