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Enabling IS-IS ISPF ··············································································································································· 155
Configuring IS-IS network management ············································································································ 156
Enhancing IS-IS network security ································································································································ 156
Configuration prerequisites ································································································································ 156
Configuring neighbor relationship authentication ··························································································· 157
Configuring area authentication ························································································································ 157
Configuring routing domain authentication ······································································································ 157
Configuring IS-IS GR ···················································································································································· 158
Configuring IS-IS NSR ·················································································································································· 159
Configuring BFD for IS-IS············································································································································· 159
Configuring IS-IS FRR ··················································································································································· 160
Configuration prerequisites ································································································································ 160
Configuration guidelines ···································································································································· 160
Configuring IS-IS FRR to automatically calculate a backup next hop ···························································· 161
Configuring IS-IS FRR using a routing policy ···································································································· 161
Configuring BFD for IS-IS FRR ···························································································································· 161
Displaying and maintaining IS-IS ······························································································································· 162
IS-IS configuration examples ······································································································································· 163
Basic IS-IS configuration example ····················································································································· 163
DIS election configuration example ··················································································································· 167
IS-IS route redistribution configuration example ······························································································ 171
IS-IS authentication configuration example······································································································· 175
IS-IS GR configuration example ························································································································· 177
IS-IS NSR configuration example ······················································································································· 179
BFD for IS-IS configuration example ·················································································································· 182
IS-IS FRR configuration example ························································································································ 185
Configuring BGP ····················································································································································· 188
Overview ······································································································································································· 188
BGP speaker and BGP peer ······························································································································· 188
BGP message types ············································································································································· 188
BGP path attributes ············································································································································· 189
BGP route selection ············································································································································· 193
BGP route advertisement rules ··························································································································· 193
BGP load balancing ············································································································································ 193
Settlements for problems in large-scale BGP networks ···················································································· 195
MP-BGP ································································································································································· 197
BGP configuration views ···································································································································· 198
Protocols and standards ····································································································································· 199
BGP configuration task list ·········································································································································· 200
Configuring basic BGP ················································································································································ 203
Enabling BGP ······················································································································································· 203
Configuring a BGP peer ····································································································································· 204
Configuring dynamic BGP peers ······················································································································· 205
Configuring a BGP peer group ·························································································································· 206
Specifying the source interface for TCP connections ······················································································· 213
Generating BGP routes ················································································································································ 214
Injecting a local network ···································································································································· 215
Redistributing IGP routes····································································································································· 215
Controlling route distribution and reception ············································································································· 217
Configuring BGP route summarization ············································································································· 217
Advertising optimal routes in the IP routing table ···························································································· 218
Advertising a default route to a peer or peer group ······················································································· 219
Limiting routes received from a peer or peer group ························································································ 219
Configuring BGP route filtering policies ··········································································································· 220
