Allied Telesis X900-48FE Switching Enhancements, Ordering Hardware Filters in 48-Port Switches

Software Version 2.8.1 25

Switching Enhancements

This Software Version includes the following enhancements to switching:

■Ordering Hardware Filters in 48-Port Switches

■Limiting Rapid MAC Movement

■Route Update Queue Length

■Removing a Description from a Switch Port

■Securing a Single VLAN through Switch Filters

■Change of Debug Command Syntax

■Enhanced Static Switch Filtering on Ports within a Trunk Group

■Ethernet Protection Switching Ring (EPSR)

This section describes the enhancements. The new and modified commands to implement them are described in Command Reference Updates.

Ordering Hardware Filters in 48-Port Switches

This feature applies only to the following products: AT-8648, AT-8748, AT-8848, and the Rapier 48i. These products contain 2 switching instances, which adds complexity to the filtering process when packets are being sent between instances.

This Software Version allows you to select between two modes of using classifier-based packet filtering in 48-port switches: port-specific filters first, or non port-specific filters first.

You can select different modes using the new set switch hwfilter mode command. Selecting the right mode when setting up classifier-based packet filters ensures that packets are filtered as expected across switch instances. The switch defaults to port-specific filters first. You can change the filtering mode on the switch by using the command:

set switch hwfilter mode={psfnpsf}

Port-specific filters apply to traffic either ingressing or egressing a particular port. They use a classifier which specifies the iport or eport parameter. Non port-specific filters can apply to all traffic travelling through the switch. Non port-specific filters are created with a classifier that does not have the iport or eport parameter specified.

Software Version 2.8.1 C613-10477-00 REV B