vi
IPv6 path MTU discovery ···································································································································· 138
IPv6 transition technologies ········································································································································· 138
Dual stack ····························································································································································· 139
Tunneling ······························································································································································ 139
Protocols and standards ·············································································································································· 139
IPv6 basics configuration task list ······························································································································· 139
Assigning IPv6 addresses to interfaces ······················································································································ 140
Configuring an IPv6 global unicast address ···································································································· 140
Configuring an IPv6 link-local address ············································································································· 142
Configuring an IPv6 anycast address ··············································································································· 143
Configuring IPv6 ND ··················································································································································· 144
Configuring a static neighbor entry ·················································································································· 144
Setting the maximum number of dynamic neighbor entries ············································································ 144
Setting the aging timer for ND entries in stale state ························································································ 145
Minimizing link-local ND entries························································································································ 145
Setting the hop limit ············································································································································ 145
Configuring parameters for RA messages ········································································································ 146
Configuring the maximum number of attempts to send an NS message for DAD ······································· 148
Enabling ND proxy ············································································································································· 148
Configuring a customer-side port ······························································································································· 150
Configuring path MTU discovery ······························································································································· 150
Configuring the interface MTU ·························································································································· 150
Configuring a static path MTU for a specific IPv6 address ············································································ 151
Configuring the aging time for dynamic path MTUs ······················································································· 151
Controlling sending ICMPv6 messages ····················································································································· 151
Configuring the rate limit for ICMPv6 error messages ···················································································· 152
Enabling replying to multicast echo requests ··································································································· 152
Enabling sending ICMPv6 destination unreachable messages ······································································ 152
Enabling sending ICMPv6 time exceeded messages ······················································································ 153
Enabling sending ICMPv6 redirect messages ·································································································· 153
Specifying the source address for ICMPv6 packets ························································································ 154
Enabling a device to discard IPv6 packets that contain extension headers ·························································· 154
Displaying and maintaining IPv6 basics ··················································································································· 154
Basic IPv6 configuration example ······························································································································ 156
Network requirements ········································································································································· 156
Configuration procedure ···································································································································· 156
Verifying the configuration ································································································································· 157
Troubleshooting IPv6 basics configuration ················································································································ 160
Symptom ······························································································································································· 160
Solution ································································································································································· 160
DHCPv6 overview ··················································································································································· 161
DHCPv6 address/prefix assignment ·························································································································· 161
Rapid assignment involving two messages······································································································· 161
Assignment involving four messages ················································································································· 161
Address/prefix lease renewal ···································································································································· 162
Stateless DHCPv6 ························································································································································· 163
Protocols and standards ·············································································································································· 163
Configuring the DHCPv6 server ····························································································································· 164
Overview ······································································································································································· 164
IPv6 address assignment ···································································································································· 164
IPv6 prefix assignment ········································································································································ 164
Concepts······························································································································································· 165
DHCPv6 address pool ········································································································································ 166
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