Cisco Systems BC-109 manual Filter Frames by Vendor Code, Filter Source Addresses

Secure the SRB Network

To enable filtering on input or output, use one of the following commands in interface configuration mode:

Command	Purpose
source-bridge input-lsap-list access-list-number	Enable filtering of IEEE
	802-encapsulated packets on input by
	type code.
source-bridge output-lsap-list access-list-number	Enable filtering of IEEE
	802-encapsulated packets on output
	by type code.

You can filter SNAP-encapsulated packets on either input or output. The access list you specify is the one you created that includes the protocol type codes.

To enable filtering on input or output, use one of the following commands in interface configuration mode:

Command	Purpose
source-bridge input-type-list access-list-number	Filter SNAP-encapsulated packets on
	input by type code.
source-bridge output-type-list access-list-number	Filter SNAP-encapsulated frames on
	output by type code.

Filter Frames by Vendor Code

To configure administrative filters by vendor code or address, define access lists that look for Token Ring addresses or for particular vendor codes for administrative filtering. To do so, use the following command in global configuration mode:

Purpose	Command
access-listaccess-list-number {permit deny} address	Configure vendor code access lists.
mask

Filter Source Addresses

To configure filtering on IEEE 802 source addresses, assign an access list to a particular input interface for filtering the Token Ring or IEEE 802 source addresses. To do so, use the following command in interface configuration mode:

Command	Purpose
source-bridge input-address-list access-list-number	Enable filtering on IEEE 802 source
	addresses.

Filter Destination Addresses

To configure filtering on IEEE 802 destination addresses, assign an access list to a particular output interface. To do so, use the following command in interface configuration mode:

Command	Purpose
source-bridge output-address-list access-list-number	Enable filtering on IEEE 802
	destination addresses.

BC-136Bridging and IBM Networking Configuration Guide