Configuring IPv6 DNS ··············································································································································· 76
Configuring the IPv6 DNS client ·································································································································· 76
IPv6 DNS configuration examples ······························································································································· 77
Network requirements ··········································································································································· 77
Configuration procedure ······································································································································ 78
Network requirements ··········································································································································· 78
Configuration procedure ······································································································································ 79
Verifying the configuration ··································································································································· 82
Optimizing IP performance ······································································································································· 84
Configuring TCP attributes ············································································································································ 86
Configuring TCP timers ········································································································································· 86
Configuration procedure ······································································································································ 88
Configuring UDP helper············································································································································· 90
Overview ········································································································································································· 90
Configuring UDP helper ················································································································································ 90
Configuration procedure ··············································································································································· 90
UDP helper configuration example ······························································································································ 91
Network requirements ··········································································································································· 91
Configuration procedure ······································································································································ 91
Configuring IPv6 basics ············································································································································· 93
Overview ········································································································································································· 93
IPv6 features ··························································································································································· 93
IPv6 addresses ······················································································································································· 94
IPv6 path MTU discovery ······································································································································ 99
IPv6 transition technologies ································································································································ 100
Protocols and standards ····································································································································· 101
Configuring basic IPv6 functions ································································································································ 102
Enabling IPv6 ······················································································································································· 102
Configuring IPv6 ND ··················································································································································· 105
iv