Configuring Source Route Bridge Filters

Source route bridge supports the following two types of filters:

• Protocol ID filters
• Ring number filters

Refer to Understanding for more information.

NOTE:  When you configure a filter for a primary WAN call, an equivalent filter is automatically generated for the backup call. If the primary call fails, the backup call is automatically connected.

This section contains the following topics:

• Configuring Protocol ID Filters
• Configuring Ring Number Filters

Configuring Protocol ID Filters

To configure protocol ID filters, complete the following steps:

1. Load FILTCFG, then select the following parameter path:

   Select Configure Source Route Bridge Filters > Protocol ID Filters

2. Select Action and toggle the choice to permit or deny the packets in the filter list.

   This specifies the action taken with a packet that appears in the filter list. If you select to permit packets, the bridge accepts only the packets in the filter list. If you select to deny packets, the bridge does not accept the packets in the filter list.

3. Select Filters .

   This lists the packets that are permitted or denied, according to the Action parameter setting.

4. Modify the packet list.

   Select a filter from the list and press Enter to modify the filter or Del to remove it. Press Ins to add a new packet.

   If you are modifying an existing filter or adding a new filter, specify the following parameters from the Define Filter menu:

   • Source Interface ---Press Enter and select an interface from the list of configured network interfaces. This specifies the network interface at which incoming data packets are filtered.
   • Protocol ID ---Press Enter and select a protocol ID from the list.

     Press F3 to modify a protocol ID. Press Ins to define a new protocol ID and supply the following information:

     NOTE:  You cannot modify predefined protocol ID entries.

     Select Protocol ID Type ---Select either LLC SAP or 802.2 SNAP, where LLC SAP is the original IEEE 802.2 1-byte protocol ID, and 802.2 SNAP is an expanded 5-byte protocol ID used with SNAP SAP.

     Name ---Specify a unique name for the protocol ID.

     Value ---For LLC SAP, enter a 1-byte (up to two hexadecimal digits) ID. For SNAP SAP, enter up to a 5-byte (10 hexadecimal digits) ID with a minimum value of 600 (hexadecimal).

     Comment ---Enter an optional short description for the protocol ID.

     NOTE:  All changes to the filter list take place immediately.

   • Comment ---Enter an optional short description.

5. Press Esc and save the filter information.

6. Select Status and toggle the choice to read Enabled or Disabled to specify the status of the protocol ID filters.

   Any configured filters immediately become active (enabled) or inactive (disabled).

7. Press Esc to return to the Configure Source Route Bridge Filters menu.

Configuring Ring Number Filters

To configure ring number filters, complete the following steps:

1. Load FILTCFG, then select the following parameter path:

   Select Configure Source Route Bridge Filters > Ring Numbers Filters

2. Select Status and toggle the choice to read Enabled or Disabled to specify the status of the ring number filters.

   This displays the action taken when a packet matches a filter in the filter list. The only action possible is to select Deny Packets .

3. Select Filters .

   This lists the packets that are permitted or denied, according to the Action parameter setting.

4. Modify the filter list.

   Select a filter from the list and press Enter to modify the filter or Del to remove it. Press Ins to add a new filter.

   If you are modifying an existing filter or adding a new filter, specify the following parameters from the Define Filter menu:

   • Source Ring Number ---Enter a number in the range of 1 to FFF (hexadecimal).
   • Comment ---Enter an optional short description.

5. Press Esc and save the filter information.

   NOTE:  All changes to the filter list take place immediately.

6. Press Esc to return to the Configure Source Route Bridge Filters menu.