Configuring IP Information
IP Addressing
Cisco Small Business SFE/SGE Managed Switches Administration Guide 197
7
• Default Gateway IP Address — Defines the Static Default Gateway IP
Address.
STEP 3 Define the relevant fields.
STEP 4 Click Apply. The Default Gateway is defined, and the device is updated.
Configuring ISATAP Tunnels
The
Intra-Site Automatic Tunnel Access Protocol
(ISATAP) enables encapsulating
IPv6 packets within IPv4 packets for transmission over IPv4 networks. ISATAP is
considered a single IPv6 interface. When enabling ISATAP, the automatically
generated Link Local IPv6 address is assigned to the interface and the interface
becomes active.
When defining ISATAP tunnels, note the following:
• 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 a ISATAP interface is active, the ISATAP router IPv4 address is resolved via
DNS by using ISATAP-to-IPv4 mapping. If ISATAP DNS record is not resolved,
ISATAP host name-to-address mapping is searched in the host name cache.
• When ISATAP router IPv4 address is not resolved via 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.
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