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IPv6 features ························································································································································· 138
IPv6 addresses ····················································································································································· 139
IPv6 ND protocol ················································································································································· 142
IPv6 path MTU discovery ···································································································································· 144
IPv6 transition technologies ········································································································································· 144
Dual stack ····························································································································································· 145
Tunneling ······························································································································································ 145
Protocols and standards ·············································································································································· 145
IPv6 basics configuration task list ······························································································································· 145
Assigning IPv6 addresses to interfaces ······················································································································ 146
Configuring an IPv6 global unicast address ···································································································· 146
Configuring an IPv6 link-local address ············································································································· 148
Configuring an IPv6 anycast address ··············································································································· 150
Configuring IPv6 ND ··················································································································································· 150
Configuring a static neighbor entry ·················································································································· 150
Setting the maximum number of dynamic neighbor entries ············································································ 150
Setting the aging timer for ND entries in stale state ························································································ 151
Minimizing link-local ND entries························································································································ 151
Setting the hop limit ············································································································································ 152
Configuring parameters for RA messages ········································································································ 152
Configuring the maximum number of attempts to send an NS message for DAD ······································· 154
Enabling ND proxy ············································································································································· 155
Configuring path MTU discovery ······························································································································· 156
Configuring the interface MTU ·························································································································· 156
Configuring a static path MTU for an IPv6 address ························································································ 157
Configuring the aging time for dynamic path MTUs ······················································································· 157
Controlling sending ICMPv6 messages ····················································································································· 157
Configuring the rate limit for ICMPv6 error messages ···················································································· 157
Enabling replying to multicast echo requests ··································································································· 158
Enabling sending ICMPv6 destination unreachable messages ······································································ 158
Enabling sending ICMPv6 time exceeded messages ······················································································ 159
Enabling sending ICMPv6 redirect messages ·································································································· 159
Specifying the source address for ICMPv6 packets ························································································ 160
Enabling a device to discard IPv6 packets that contain extension headers ·························································· 160
Displaying and maintaining IPv6 basics ··················································································································· 160
IPv6 basics configuration example ···························································································································· 162
Network requirements ········································································································································· 162
Configuration procedure ···································································································································· 162
Verifying the configuration ································································································································· 163
Troubleshooting IPv6 basics configuration ················································································································ 166
Symptom ······························································································································································· 166
Solution ································································································································································· 166
DHCPv6 overview ··················································································································································· 167
DHCPv6 address/prefix assignment ·························································································································· 167
Rapid assignment involving two messages······································································································· 167
Assignment involving four messages ················································································································· 167
Address/prefix lease renewal ···································································································································· 168
Stateless DHCPv6 ························································································································································· 169
Protocols and standards ·············································································································································· 169
Configuring the DHCPv6 server ····························································································································· 170
Overview ······································································································································································· 170
IPv6 address assignment ···································································································································· 170
IPv6 prefix assignment ········································································································································ 170
