vi
Configuring BGP update sending delay ··········································································································· 225
Configuring BGP route dampening ··················································································································· 226
Controlling BGP path selection ··································································································································· 227
Specifying a preferred value for routes received ····························································································· 227
Configuring preferences for BGP routes ··········································································································· 228
Configuring the default local preference ·········································································································· 229
Configuring the MED attribute ··························································································································· 230
Configuring the NEXT_HOP attribute ················································································································ 234
Configuring the AS_PATH attribute ··················································································································· 236
Tuning and optimizing BGP networks ························································································································ 241
Configuring the keepalive interval and hold time ···························································································· 241
Configuring the interval for sending updates for the same route ··································································· 242
Enabling BGP to establish an EBGP session over multiple hops ···································································· 243
Enabling immediate re-establishment of direct EBGP connections upon link failure ···································· 244
Enabling 4-byte AS number suppression ·········································································································· 244
Enabling MD5 authentication for BGP peers ··································································································· 245
Configuring BGP load balancing ······················································································································ 246
Configuring IPsec for IPv6 BGP ························································································································· 247
Disabling BGP to establish a session to a peer or peer group ······································································ 248
Configuring GTSM for BGP ······························································································································· 248
Configuring BGP soft-reset·································································································································· 249
Protecting an EBGP peer when memory usage reaches level 2 threshold ···················································· 253
Configuring a large-scale BGP network ···················································································································· 254
Configuring BGP community ······························································································································ 254
Configuring BGP route reflection ······················································································································· 256
Configuring a BGP confederation ····················································································································· 258
Configuring BGP GR ··················································································································································· 258
Configuring BGP NSR ················································································································································· 260
Enabling SNMP notifications for BGP························································································································ 260
Enabling logging of session state changes ··············································································································· 261
Configuring BFD for BGP ············································································································································ 261
Configuring BGP FRR ··················································································································································· 262
Configuring 6PE ··························································································································································· 265
Configuring basic 6PE ········································································································································ 265
Configuring optional 6PE capabilities ·············································································································· 266
Displaying and maintaining BGP ······························································································································· 267
IPv4 BGP configuration examples ······························································································································ 270
Basic BGP configuration example ····················································································································· 270
BGP and IGP route redistribution configuration example ··············································································· 274
BGP route summarization configuration example ··························································································· 277
BGP load balancing configuration example ···································································································· 280
BGP community configuration example ············································································································ 283
BGP route reflector configuration example······································································································· 286
BGP confederation configuration example ······································································································· 289
BGP path selection configuration example······································································································· 293
BGP GR configuration example ························································································································· 296
BFD for BGP configuration example ················································································································· 297
BGP FRR configuration example ························································································································ 301
IPv6 BGP configuration examples ······························································································································ 305
IPv6 BGP basic configuration example ············································································································· 305
IPv6 BGP route reflector configuration example ······························································································ 308
6PE configuration example ································································································································ 310
BFD for IPv6 BGP configuration example ········································································································· 313
IPv6 BGP FRR configuration example················································································································ 317
