Cisco WAP551 Administration Manual page 87

LAN
IPv6 Tunnel
STEP 1
STEP 2
Cisco Small Business WAP551 and WAP561 Wireless-N Access Point
The WAP device acts as an ISATAP client. An ISATAP enabled host or router must reside on
the LAN. The IP address or hostname of the router is configured on the WAP device (by
default, it is isatap). If configured as a hostname, the WAP device communicates with a DNS
server to resolve the name into one or more ISATAP router addresses. The WAP device then
sends solicit messages to the router(s). When an ISATAP-enabled router replies with an
advertisement message, the WAP device and router establish the tunnel. The tunnel interface is
assigned a link-local and a global IPv6 address, which serve as virtual IPv6 interfaces on the
IPv4 network.
When IPv6 hosts initiate communication with the WAP device connected via the ISATAP
router, the IPv6 packets are encapsulated into IPv4 packets by the ISATAP router.
To configure an IPv6 tunnel using ISATAP:
Select LAN > IPv6 Tunnel in the navigation area.
IPv6 Tunnel
Configure the following parameters:
• ISATAP Status—Enables or disables the administrative mode of ISATAP on the WAP
device.
• ISATAP Capable Host—The IP address or DNS name of the ISATAP router. The default
value is isatap.
• ISATAP Query Interval—Specifies how often the WAP device should send queries to
the DNS server to attempt to resolve the ISATAP host name into an IP address. The
WAP sends DNS queries only when the IP address of an ISATAP router is unknown.
The valid range is 120 to 3600 seconds.
• ISATAP Solicitation Interval—Specifies how often the WAP should send router
solicitation messages to the ISATAP router(s) it learns about through the DNS query
messages. The WAP sends router solicitation messages only when there is no active
ISATAP router. The valid range is 120 to 3600 seconds.
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