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BGP speaker and BGP peer ·················································································································· 178

BGP message types ······························································································································ 178

BGP path attributes ································································································································ 178

BGP route selection ······························································································································· 182

BGP route advertisement rules ·············································································································· 182

BGP load balancing ······························································································································· 182

Settlements for problems in large-scale BGP networks ········································································· 184

MP-BGP ················································································································································· 186

BGP configuration views ························································································································ 187

Protocols and standards ························································································································ 188

BGP configuration task list ····························································································································· 189

Configuring basic BGP ··································································································································· 191

Enabling BGP ········································································································································· 192

Configuring a BGP peer ························································································································· 192

Configuring dynamic BGP peers ············································································································ 194

Configuring a BGP peer group ··············································································································· 195

Specifying the source address of TCP connections ··············································································· 202

Generating BGP routes ·································································································································· 203

Injecting a local network ························································································································· 203

Redistributing IGP routes ······················································································································· 204

Controlling route distribution and reception ··································································································· 205

Configuring BGP route summarization ··································································································· 205

Advertising optimal routes in the IP routing table ··················································································· 207

Advertising a default route to a peer or peer group ················································································ 207

Limiting routes received from a peer or peer group ··············································································· 208

Configuring BGP route filtering policies ································································································· 209

Configuring BGP update sending delay ································································································· 213

Configuring BGP route dampening ········································································································ 214

Controlling BGP path selection ······················································································································ 214

Specifying a preferred value for routes received ···················································································· 214

Configuring preferences for BGP routes ································································································ 215

Configuring the default local preference ································································································ 216

Configuring the MED attribute ················································································································ 217

Configuring the NEXT_HOP attribute ···································································································· 221

Configuring the AS_PATH attribute ······································································································· 223

Tuning and optimizing BGP networks ············································································································ 228

Configuring the keepalive interval and hold time ··················································································· 228

Configuring the interval for sending updates for the same route ··························································· 229

Enabling BGP to establish an EBGP session over multiple hops ·························································· 230

Enabling immediate re-establishment of direct EBGP connections upon link failure ····························· 231

Enabling 4-byte AS number suppression ······························································································· 231

Enabling MD5 authentication for BGP peers ························································································· 232

Configuring BGP load balancing ············································································································ 233

Configuring IPsec for IPv6 BGP ············································································································· 234

Disabling BGP to establish a session to a peer or peer group ······························································· 234

Configuring GTSM for BGP ···················································································································· 235

Configuring BGP soft-reset ···················································································································· 236

Protecting an EBGP peer when memory usage reaches level 2 threshold ··········································· 240

Configuring a large-scale BGP network ········································································································· 241

Configuring BGP community ·················································································································· 241

Configuring BGP route reflection ··········································································································· 242

Configuring a BGP confederation ·········································································································· 244

Configuring BGP GR ······································································································································ 245

Configuring BGP NSR ··································································································································· 246

Enabling SNMP notifications for BGP ············································································································ 246

Enabling logging of session state changes ···································································································· 247

Enabling logging for BGP route flapping ········································································································ 247

Configuring BFD for BGP ······························································································································· 248

Configuring BGP FRR ···································································································································· 249

Configuring 6PE ············································································································································· 252

Configuring basic 6PE ···························································································································· 252

Configuring optional 6PE capabilities ····································································································· 253