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AT-WA7500 and AT-WA7501 Installation and User’s Guide
153
Using Predefined Subtype Filters
You can configure the access point to pass or drop certain predefined
frame subtypes.
To configure predefined subtype filters
1. From the main menu, click IP Tunnels > Predefined Subtype Filters.
The Predefined Subtype Filters screen appears.
2. For each frame subtype field, check or clear the check box to configure
if the frame subtypes are passed or are dropped. If you check the
check box, the frame subtype is allowed to pass.
3. Click Submit Changes to save your changes. To activate your
changes, from the menu bar click Save/Discard Changes, and then
click Save Changes and Reboot. For help, see “Saving Configuration
Changes” on page 46.
Customizing Subtype Filters
You can define output filters that restrict customized frame subtypes that
can pass through an IP tunnel. Frames can be filtered by the DIX, 802.2,
or 802.3 SNAP type; the IP protocol type; or the TCP or UDP port number.
By default, the filters drop all protocol types except the NNL DIX Ethernet
type (hexadecimal 875B). Filters must be configured in all root candidates
and in any access point that can attach to the remote end of an IP tunnel.
You define the action, subtype, and value parameters in customized filters:
Allow/Pass: Check or clear this check box. Check this check box to pass
all frames of the subtype and value. Clear this check box to drop all frames
of the subtype and value.