IP Configuration
IPv4 Management and Interfaces
233 Cisco Small Business 200 Series Smart Switch Administration Guide
16
Configuring Tunnels
NOTE To configure a tunnel, first configure an IPv6 interface as a tunnel in the IPv6
Interfaces page.
To configure an IPv6 tunnel:
STEP 1 Click Administration > Management Interface > IPv6 Tunnel.
STEP 2 Enter values for the following fields:
• Tunnel Number—Displays the automatic tunnel router domain number.
• Tunnel Type—Always ISATAP.
• Source IPv4 Address—The IPv4 address of the selected interface on the
current device used to form part of the IPv6 address.
-
Auto
—Automatically selects the lowest IPv4 address from among all of
its configured IPv4 interfaces on the device. This option is equivalent to
the Interface option in Layer 3, because in Layer 2 there is only one
interface.
NOTE If the IPv4 address is changed, the local address of the tunnel
interface is also changed.
-
None
—Disable the tunnel.
•
Manual
—Enter the IPv4 source address to be used. ISATAP Router Name—
A global string that represents a specific automatic tunnel router domain
name. The name can either be the default name (ISATAP) or a user defined
name.
• ISATAP Solicitation Interval—The number of seconds between ISATAP
router solicitations messages, when there is no active ISATAP router. The
interval can be the default value or a user defined interval.
• ISATAP Robustness—Used to calculate the interval for the DNS or router
solicitation queries. The larger the number, the more frequent the queries.
NOTE The ISATAP tunnel is not operational if the underlying IPv4 interface is
not in operation.
STEP 3 Click Apply. The tunnel is saved to the Running Configuration file.
