vi
Ignoring IGP metrics during optimal route selection ································································ 257
Configuring the SoO attribute ····························································································· 257
Tuning and optimizing BGP networks ························································································· 258
Configuring the keepalive interval and hold time ····································································· 259
Configuring the interval for sending updates for the same route ················································· 260
Enabling BGP to establish an EBGP session over multiple hops ··············································· 261
Enabling immediate re-establishment of direct EBGP connections upon link failure ······················· 262
Enabling BGP ORF capabilities ·························································································· 262
Enabling 4-byte AS number suppression ·············································································· 264
Enabling MD5 authentication for BGP peers ·········································································· 265
Enabling keychain authentication for BGP peers ···································································· 266
Configuring BGP load balancing ························································································· 267
Configuring IPsec for IPv6 BGP ·························································································· 268
Disabling BGP to establish a session to a peer or peer group ··················································· 269
Configuring GTSM for BGP ······························································································· 270
Configuring BGP soft-reset ································································································ 271
Protecting an EBGP peer when memory usage reaches level 2 threshold ··································· 276
Configuring an update delay for local MPLS labels ································································· 277
Flushing the suboptimal BGP route to the RIB ······································································· 278
Setting a DSCP value for outgoing BGP packets ···································································· 278
Enabling per-prefix label allocation ······················································································ 279
Disabling optimal route selection for labeled routes without tunnel information ······························ 279
Configuring a large-scale BGP network ······················································································ 279
Configuring BGP communities ··························································································· 279
Configuring BGP route reflection ························································································ 281
Configuring a BGP confederation ························································································ 283
Configuring BGP GR ·············································································································· 284
Configuring BGP NSR ············································································································· 286
Enabling SNMP notifications for BGP ························································································· 286
Enabling logging for session state changes ················································································· 286
Enabling logging for BGP route flapping ······················································································ 287
Configuring BFD for BGP ········································································································· 289
Configuring BGP FRR ············································································································· 290
Configuring 6PE ···················································································································· 292
Configuring basic 6PE ······································································································ 293
Configuring optional 6PE capabilities ··················································································· 294
Configuring BGP LS ··············································································································· 295
Configuring basic BGP LS ································································································· 295
Configuring BGP LS route reflection ···················································································· 296
Specifying an AS number and a router ID for BGP LS messages ··············································· 296
Configuring BMP···················································································································· 297
Displaying and maintaining BGP ······························································································· 297
Displaying BGP ··············································································································· 297
Resetting BGP sessions ··································································································· 302
Clearing BGP information ·································································································· 302
IPv4 BGP configuration examples ····························································································· 303
Basic BGP configuration example ······················································································· 303
BGP and IGP route redistribution configuration example ·························································· 307
BGP route summarization configuration example ··································································· 310
BGP load balancing configuration example ··········································································· 313
BGP community configuration example ················································································ 316
BGP route reflector configuration example ············································································ 319
BGP confederation configuration example ············································································ 321
BGP path selection configuration example ············································································ 325
BGP GR configuration example ·························································································· 328
BFD for BGP configuration example ···················································································· 329
BGP FRR configuration example ························································································ 333
Multicast BGP configuration example··················································································· 337
Dynamic BGP peer configuration example ············································································ 340
BGP LS configuration example ··························································································· 342
IPv6 BGP configuration examples ····························································································· 344
IPv6 BGP basic configuration example ················································································· 344