IPv6 Configuration Guide K/KA/KB.15.15

Contents
1 IPv6 Addressing Configuration...................................................................11
Introduction............................................................................................................................11
General configuration steps.....................................................................................................11
Configuring IPv6 addressing....................................................................................................12
Configuring IP source-interface addressing.................................................................................12
Enabling IPv6 with an automatically configured link-local address.................................................13
Viewing currently configured IPv6 unicast addresses...............................................................13
Enabling autoconfiguration of a global unicast address and a default router identity on a VLAN.......14
Viewing current IPv6 autoconfiguration settings......................................................................14
Default IPv6 Gateway....................................................................................................15
Enabling DHCPv6..................................................................................................................15
Authenticating the DHCPv6 client.............................................................................................16
Viewing DHCP client information..............................................................................................16
DHCPv6 client authentication operating notes........................................................................17
Viewing configured DHCPv6 addresses................................................................................18
General operating notes for DHCPv6...................................................................................18
Statically configuring a link-local unicast address........................................................................18
Statically configuring a global unicast address...........................................................................19
Viewing the currently configured static IPv6 addresses per-VLAN..............................................20
Operating notes................................................................................................................20
Assigning an IPv6 address to a loopback interface.....................................................................20
Displaying loopback interface configurations.........................................................................21
Viewing the current IPv6 addressing configuration.......................................................................21
View IPv6 gateway, route, and router neighbors.........................................................................26
Viewing gateway and IPv6 route information.........................................................................26
Viewing IPv6 router information...........................................................................................27
Address lifetimes....................................................................................................................28
Preferred lifetime................................................................................................................28
Valid lifetime.....................................................................................................................28
DHCPv6 client........................................................................................................................29
Duplicate address detection (DAD) for statically configured addresses............................................29
IPv6 loopback interfaces..........................................................................................................29
About disabling IPv6 on a VLAN..............................................................................................30
Neighbor discovery................................................................................................................30
Duplicate address detection (DAD).......................................................................................31
DAD operation.............................................................................................................31
Configuring DAD....................................................................................................................31
Operating notes for ND......................................................................................................32
Router access and default router selection..................................................................................33
Router advertisements.........................................................................................................33
IPv6 router advertisement options for DNS configuration.....................................................33
Global configuration.....................................................................................................33
IP interface configuration...........................................................................................34
Displaying the configuration.......................................................................................34
Router solicitations.............................................................................................................34
Default IPv6 router.............................................................................................................35
Router redirection...............................................................................................................35
2 IPv6 Management Features........................................................................36
Viewing the neighbor cache.....................................................................................................36
Clearing the Neighbor Cache.............................................................................................37
IPv6 Telnet operation...............................................................................................................38
Contents 3