Quick Reference Guide

434 Tunnel
Syntax
• tunnel mode ipv6ip { isatap }
• no tunnel mode ipv6ip
• isatap — Automatic IPv6 over IPv4 ISATAP tunnel is enabled.
Default Configuration
Disabled.
Command Mode
Interface Tunnel Configuration mode.
User Guidelines
• The system can be enabled to an ISATAP tunnel. When enabled, an automatic tunnel interface is
created 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. The
host implementation selects the egress interface according to the scope of the destination IP address (for example
ISATAP/ Native IPv6).
Example
The following example configures an IPv6 transition mechanism global support mode.
tunnel isatap router
The tunnel isatap router Interface Tunnel Configuration mode command configures a global string that
represents a specific automatic tunnel router domain name. Use the no form of this command to remove
the 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 Configuration
By default, ‘ISATAP’ string represents the corresponding automatic tunnel router’s domain name.
Command Mode
Interface Tunnel Configuration mode.
Console (config)# interface tunnel 1
Console (config-tunnel)# tunnel mode ipv6ip
5400_CLI.book Page 434 Wednesday, December 17, 2008 4:33 PM