vii
Configuring UDP helper ·············································································· 196
Overview ························································································································································ 196
Feature and hardware compatibility ··············································································································· 196
Configuration restrictions and guidelines ······································································································· 196
Configuring UDP helper to convert broadcast to unicast ··············································································· 196
Configuring UDP helper to convert broadcast to multicast ············································································ 197
Configuring UDP helper to convert multicast to broadcast or unicast ···························································· 198
Displaying and maintaining UDP helper ········································································································ 199
UDP helper configuration examples ·············································································································· 199
Configuring UDP helper to convert broadcast to unicast ······································································· 199
Configuring UDP helper to convert broadcast to multicast ···································································· 200
Configuring UDP helper to convert multicast to broadcast ···································································· 201
Configuring basic IPv6 settings ··································································· 202
Overview ························································································································································ 202
IPv6 features ·········································································································································· 202
IPv6 addresses ······································································································································ 203
IPv6 ND protocol ···································································································································· 205
IPv6 path MTU discovery ······················································································································· 207
IPv6 transition technologies ··························································································································· 208
Dual stack ·············································································································································· 208
Tunneling ··············································································································································· 208
NAT-PT ·················································································································································· 209
6PE ························································································································································ 209
Protocols and standards ································································································································ 209
Compatibility information ································································································································ 210
Command and hardware compatibility ··································································································· 210
IPv6 basics configuration task list ·················································································································· 210
Assigning IPv6 addresses to interfaces ········································································································· 211
Configuring an IPv6 global unicast address ··························································································· 211
Configuring an IPv6 link-local address ··································································································· 213
Configuring an IPv6 anycast address ···································································································· 214
Configuring IPv6 ND ······································································································································ 214
Configuring a static neighbor entry ········································································································ 214
Setting the maximum number of dynamic neighbor entries ··································································· 215
Setting the aging timer for ND entries in stale state ··············································································· 215
Minimizing link-local ND entries ············································································································· 216
Setting the hop limit ································································································································ 216
Configuring parameters for RA messages ····························································································· 216
Configuring the maximum number of attempts to send an NS message for DAD ································· 218
Enabling ND proxy ································································································································· 219
Configuring IPv6 ND suppression ·········································································································· 220
Configuring IPv6 ND direct route advertisement ···················································································· 221
Configuring path MTU discovery ···················································································································· 222
Configuring the interface MTU ··············································································································· 222
Configuring a static path MTU for an IPv6 address ··············································································· 223
Configuring the aging time for dynamic path MTUs ··············································································· 223
Controlling sending ICMPv6 messages ········································································································· 223
Configuring the rate limit for ICMPv6 error messages ··········································································· 223
Enabling replying to multicast echo requests ························································································· 224
Enabling sending ICMPv6 destination unreachable messages ····························································· 224
Enabling sending ICMPv6 time exceeded messages ············································································ 225
Enabling sending ICMPv6 redirect messages ······················································································· 225
Specifying the source address for ICMPv6 packets ··············································································· 225
Enabling IPv6 local fragment reassembly ······································································································ 226
Configuring IPv6 load sharing based on bandwidth ······················································································· 226
Displaying and maintaining IPv6 basics ········································································································· 227
IPv6 configuration examples ·························································································································· 230
Basic IPv6 configuration example ·········································································································· 230
IPv6 ND suppression configuration example ························································································· 234
Troubleshooting IPv6 basics configuration ···································································································· 235
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