ix
Configuring IPv6 prefix acquisition ················································································································· 265
Configuring IPv6 address and prefix acquisition ···························································································· 265
Configuring stateless DHCPv6 ······················································································································ 265
Setting the DSCP value for DHCPv6 packets sent by the DHCPv6 client ····················································· 265
Displaying and maintaining DHCPv6 client ···································································································· 266
DHCPv6 client configuration examples ·········································································································· 266
IPv6 address acquisition configuration example ···················································································· 266
IPv6 prefix acquisition configuration example ························································································ 268
IPv6 address and prefix acquisition configuration example ··································································· 269
Stateless DHCPv6 configuration example ····························································································· 271
Configuring DHCPv6 snooping ··································································· 274
Overview ························································································································································ 274
Application of trusted and untrusted ports ······························································································ 274
Command and hardware compatibility ··········································································································· 275
Implementation of Option 18 and Option 37 ·································································································· 275
Option 18 for DHCPv6 snooping ············································································································ 275
DHCPv6 snooping support for Option 37 ······························································································· 276
DHCPv6 snooping configuration task list ······································································································· 276
Configuring basic DHCPv6 snooping ············································································································· 277
Configuring Option 18 and Option 37 ············································································································ 277
Configuring DHCPv6 snooping entry auto backup ························································································ 278
Setting the maximum number of DHCPv6 snooping entries ·········································································· 279
Enabling DHCPv6-REQUEST check ············································································································· 279
Displaying and maintaining DHCPv6 snooping ····························································································· 280
DHCPv6 snooping configuration example ····································································································· 280
Network requirements ···························································································································· 280
Configuration procedure ························································································································· 281
Verifying the configuration ······················································································································ 281
Configuring IPv6 fast forwarding ································································· 282
Overview ························································································································································ 282
Compatibility information ································································································································ 282
Command and hardware compatibility ··································································································· 282
Configuring the aging time for IPv6 fast forwarding entries ··········································································· 282
Configuring IPv6 fast forwarding load sharing ······························································································· 283
Displaying and maintaining IPv6 fast forwarding ··························································································· 283
Configuring tunneling ·················································································· 284
Overview ························································································································································ 284
IPv6 over IPv4 tunneling ························································································································ 284
IPv4 over IPv4 tunneling ························································································································ 286
IPv4 over IPv6 tunneling ························································································································ 287
IPv6 over IPv6 tunneling ························································································································ 291
Protocols and standards ························································································································ 291
Compatibility information ································································································································ 292
Feature and hardware compatibility ······································································································· 292
Command and hardware compatibility ··································································································· 292
Tunneling configuration task list ····················································································································· 292
Configuring a tunnel interface ························································································································ 292
Configuring an IPv6 over IPv4 manual tunnel ································································································ 294
Configuration example ··························································································································· 295
Configuring an automatic IPv4-compatible IPv6 tunnel ················································································· 297
Configuration example ··························································································································· 297
Configuring a 6to4 tunnel ······························································································································· 298
6to4 tunnel configuration example ········································································································· 299
6to4 relay configuration example ··········································································································· 301
Configuring an ISATAP tunnel ······················································································································· 303
Configuration example ··························································································································· 304
Configuring an IPv4 over IPv4 tunnel ············································································································ 306
Configuration example ··························································································································· 307
Configuring an IPv4 over IPv6 manual tunnel ································································································ 308
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