viii
Setting the maximum number of dynamic neighbor entries ··································································· 237
Setting the aging timer for ND entries in stale state ··············································································· 238
Minimizing link-local ND entries ············································································································· 238
Setting the hop limit ································································································································ 238
Configuring parameters for RA messages ····························································································· 239
Setting the maximum number of attempts to send an NS message for DAD ········································ 241
Enabling ND proxy ································································································································· 241
Configuring IPv6 ND suppression ·········································································································· 243
Configuring IPv6 ND direct route advertisement ···················································································· 244
Configuring path MTU discovery ···················································································································· 244
Setting the interface MTU ······················································································································ 244
Setting a static path MTU for an IPv6 address ······················································································· 245
Setting the aging time for dynamic path MTUs ······················································································ 245
Controlling sending ICMPv6 messages ········································································································· 245
Configuring the rate limit for ICMPv6 error messages ··········································································· 246
Enabling replying to multicast echo requests ························································································· 246
Enabling sending ICMPv6 destination unreachable messages ····························································· 246
Enabling sending ICMPv6 time exceeded messages ············································································ 247
Enabling sending ICMPv6 redirect messages ······················································································· 247
Specifying the source address for ICMPv6 packets ··············································································· 248
Enabling router renumbering ························································································································· 248
Enabling IPv6 local fragment reassembly ······································································································ 249
Configuring IPv6 load sharing based on bandwidth ······················································································· 249
Enabling a device to discard IPv6 packets that contain extension headers ·················································· 249
Displaying and maintaining IPv6 basics ········································································································· 250
IPv6 configuration examples ·························································································································· 254
Basic IPv6 configuration example ·········································································································· 254
IPv6 ND suppression configuration example ························································································· 258
Troubleshooting IPv6 basics configuration ···································································································· 259
Symptom ················································································································································ 259
Solution ·················································································································································· 259
DHCPv6 overview ······················································································· 260
DHCPv6 address/prefix assignment ·············································································································· 260
Rapid assignment involving two messages ··························································································· 260
Assignment involving four messages ····································································································· 260
Address/prefix lease renewal ························································································································· 261
Stateless DHCPv6 ········································································································································· 262
Protocols and standards ································································································································ 262
Configuring the DHCPv6 server ·································································· 263
Overview ························································································································································ 263
IPv6 address assignment ······················································································································· 263
IPv6 prefix assignment ··························································································································· 263
Concepts ················································································································································ 264
DHCPv6 address pool ···························································································································· 264
IPv6 address/prefix allocation sequence ································································································ 265
Configuration task list ····································································································································· 266
Configuring IPv6 prefix assignment ··············································································································· 266
Configuration guidelines ························································································································· 266
Configuration procedure ························································································································· 267
Configuring IPv6 address assignment ··········································································································· 267
Configuration guidelines ························································································································· 268
Configuration procedure ························································································································· 268
Configuring network parameters assignment ································································································ 269
Configuring network parameters in a DHCPv6 address pool ································································· 269
Configuring network parameters in a DHCPv6 option group ································································· 270
Configuring a DHCPv6 policy for IPv6 address and prefix assignment ························································· 271
Configuring the DHCPv6 server on an interface ···························································································· 272
Configuration guidelines ························································································································· 272
Configuration procedure ························································································································· 272
Setting the DSCP value for DHCPv6 packets sent by the DHCPv6 server ··················································· 273
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