Quick Reference Guide

472 Tunnel
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DELL CONFIDENTIAL – PRELIMINARY 5/15/12 – FOR PROOF ONLY
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: 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.
User Guidelines
•The ipv6 tunnel routers-dns command determines the string that the host uses for automatic tunnel router
lookup in IPv4 DNS procedure. By default, the string ‘ISATAP’ is used for the corresponding automatic
tunnel types.
• Per tunnel only one string can represent the automatic tunnel router name. Using this command overwrites
the existing entry.
Console (config)# interface tunnel 1
Console (config-tunnel)# tunnel mode ipv6ip