Reference Guide

214 IP Addressing
When defining tunneling, note the following:
• An IPv6 Link Local address is assigned to the ISATAP interface. The initial
IP address is assigned to the interface, and the interface state becomes
Active .
• If an ISATAP interface is active, the ISATAP router IPv4 address is resolved
via DNS by using ISATAP-to-IPv4 mapping. If the ISATAP DNS record is
not resolved, the ISATAP host name-to-address mapping is searched in the
host name cache.
• When an ISATAP router IPv4 address is not resolved via the DNS process,
the status of the ISATAP IP interface remains Active. The system does not
have a default gateway for ISATAP traffic until the DNS procedure is
resolved.
• In order for an ISATAP Tunnel to work properly over an IPv4 network, an
ISATAP router is must be set up.
To define an IPv6 ISATAP tunnel:
1
Click System > IPv6 Addressing > ISATAP Tunnel in the tree view to
display the
ISATAP Tunnel page.
2 Enter the fields:
–
ISATAP Status — Enable/disable the status of ISATAP on the device.
–
IPv4 Address Type — Select the type of the tunnel source IPv4 address
used by the tunnel. The options are:
•
Auto — Use the dynamic address.
•
None — Disable the ISATAP tunnel
•
Manual — Use the manual address assigned.
–
IPv4 Address — Enter the local (source) IPv4 address of a tunnel
interface.
–
Tunnel Router's Domain Name — Enter a specific automatic tunnel
router domain name.
–
ISATAP Router Solicitation Interval (10 - 3600) — Enter the interval
between router solicitations messages when there is no active router.
–
ISATAP Robustness (1 - 20) — Enter the number of Query/Router
Solicitation refresh messages that the device sends per second.
Select the
Use Default option to use the default setting of a field.