434 TunnelSyntax• tunnel mode ipv6ip {isatap}• no tunnel mode ipv6ip• isatap — Automatic IPv6 over IPv4 ISATAP tunnel is enabled.Default ConfigurationDisabled.Command ModeInterface Tunnel Configuration mode.User Guidelines• The system can be enabled to an ISATAP tunnel. When enabled, an automatic tunnel interface iscreated on each interface that is assigned with IPv4 address.NOTE: On a specific interface (that is port/ VLAN), both native IPV6 and transition mechanisms can coexist. Thehost implementation selects the egress interface according to the scope of the destination IP address (for exampleISATAP/ Native IPv6).ExampleThe following example configures an IPv6 transition mechanism global support mode.tunnel isatap routerThe tunnel isatap router Interface Tunnel Configuration mode command configures a global string thatrepresents a specific automatic tunnel router domain name. Use the no form of this command to removethe string associated with the router domain name and return to the default.Syntax• tunnel isatap router router_name• no tunnel isatap router• router_name — A string representing the router’s domain name.Default ConfigurationBy default, ‘ISATAP’ string represents the corresponding automatic tunnel router’s domain name.Command ModeInterface Tunnel Configuration mode.Console (config)# interface tunnel 1Console (config-tunnel)# tunnel mode ipv6ip5400_CLI.book Page 434 Wednesday, December 17, 2008 4:33 PM
