Allied Telesis AT-8900, RAPIER I, X900-48FE, AT-8700XL manual Switching Enhancements, CommandChange

26 Switching Enhancements Release Note

When to Use Port-Specific Mode

Use the port-specific psf mode when you want non port-specific filters to override the port-specific filters for certain circumstances. In the following example:

■the first (port-specific) filter stops all traffic from ingressing port 2

When to Use Non Port-Specific Mode

■the second (port-specific) filter allows traffic with the specific IP address (192.168.2.2) to ingress port 2

■the third (non port-specific) filter allows any ARP request (prot=0806) to ingress and egress all ports

create classifier=1 iport=2

create classifier=2 iport=2 ipsa=192.168.2.2 create classifier=3 prot=0806

add swi hwf classifier=1 action=discard add swi hwf classifier=2 action=nodrop add swi hwf classifier=3 action=nodrop

In psf mode, you must enter the port-specific filters first. If you add a port-specific filter after the non port-specific filters, the switch may still use a matching non port-specific filter when the packet travels between ports on different switch instances.

Use the non port-specific npsf mode when you want port-specific filters to override the non port-specific filters for certain circumstances. In the following example, the second (port-specific) filter stops the first (non port-specific) filter from discarding packets from port 50:

create class=1 ipsa=192.168.1.254/32 create class=4 ipo=50

add switch hwf class=1 ac=dis add switch hwf class=4 ac=nod

In npsf mode, you must enter the non port-specific filters first. If you add a non port-specific filter after the port-specific filters, the switch may not use the non port-specific filter when the packet travels between ports on different switch instances.

Changing Modes You can change the filter mode after filters have been entered. When you change modes, the filter entries remain in the original order. To see which mode the switch is in, use the command:

show switch hwfilter

Command Changes

The following table summarises the new and modified commands:

CommandChange

set switch hwfilter mode New command.

show switch hwfilter New mode parameter in output.

Software Version 2.8.1 C613-10477-00 REV B