tunnel isatap robustness
The tunnel isatap robustness Global Configuration mode command configures the number of DNS
Query/Router Solicitation refresh messages that the device sends. Use the no form of this command to
return to default.
Syntax
•
tunnel isatap robustness number
•
no tunnel isatap robustness
•
number — Specify the number of refresh messages. (Range: 1 – 20)
Default Configuration
3 times.
Command Mode
Global Configuration mode.
User Guidelines
•
The DNS query interval (after the IP address of the ISATAP router is known) is the TTL that is
received from the DNS divided by (Robustness + 1).
•
The router solicitation interval (when there is an active ISATAP router) is the minimum-router-
lifetime that is received from the ISATAP router divided by (Robustness + 1).
Example
The following example configures the number of DNS Query/Router Solicitation refresh messages that
the device sends to 6 times.
Console (config)# tunnel isatap robustness 6
show ipv6 tunnel
The show ipv6 tunnel Privileged EXEC mode command displays information on the ISATAP tunnel.
Syntax
•
show ipv6 tunnel
Default Configuration
This command has no default setting.
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Tunnel