R21xx-HP FlexFabric 11900 Layer 3 IP Routing Configuration Guide

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Advertising a default route ································································································································· 126
Configuring IS-IS route redistribution ················································································································ 126
Configuring IS-IS route filtering ·························································································································· 127
Configuring IS-IS route leaking ·························································································································· 127
Tuning and optimizing IS-IS networks ························································································································ 128
Configuration prerequisites ································································································································ 128
Specifying intervals for sending IS-IS hello and CSNP packets ····································································· 128
Specifying the IS-IS hello multiplier ···················································································································· 128
Configuring a DIS priority for an interface ······································································································· 129
Disabling an interface from sending/receiving IS-IS packets ········································································· 129
Enabling an interface to send small hello packets ··························································································· 130
Configuring LSP parameters ······························································································································· 130
Controlling SPF calculation interval ··················································································································· 133
Configuring convergence priorities for specific routes ···················································································· 133
Setting the LSDB overload bit ····························································································································· 134
Configuring system ID to host name mappings ································································································ 134
Enabling the logging of neighbor state changes ····························································································· 135
Enabling IS-IS ISPF ··············································································································································· 136
Enhancing IS-IS network security ································································································································ 136
Configuration prerequisites ································································································································ 136
Configuring neighbor relationship authentication ··························································································· 136
Configuring area authentication ························································································································ 137
Configuring routing domain authentication ······································································································ 137
Configuring IS-IS GR ···················································································································································· 137
Configuring BFD for IS-IS············································································································································· 138
Configuring IS-IS FRR ··················································································································································· 139
Configuration prerequisites ································································································································ 139
Configuration guidelines ···································································································································· 139
Configuring IS-IS FRR to automatically calculate a backup next hop ···························································· 140
Configuring IS-IS FRR using a routing policy ···································································································· 140
Displaying and maintaining IS-IS ······························································································································· 140
IS-IS configuration examples ······································································································································· 141
Basic IS-IS configuration example ····················································································································· 141
DIS election configuration example ··················································································································· 146
IS-IS route redistribution configuration example ······························································································ 150
IS-IS authentication configuration example······································································································· 153
IS-IS GR configuration example ························································································································· 156
BFD for IS-IS configuration example ·················································································································· 157
IS-IS FRR configuration example ························································································································ 160
Configuring BGP ····················································································································································· 163
Overview ······································································································································································· 163
BGP speaker and BGP peer ······························································································································· 163
BGP message types ············································································································································· 163