Allied Telesis x900-24 series manual What information will you find in this document?

	Introduction
What information will you find in this document?
This document contains the following:
Introduction	1
Which products and software versions does this information apply to?	2
Creating dedicated hardware filters	3
Configuring packet classification	3
Configuring Layer 4 source and destination port number masks	4
Configuring “inner” parameters for nested VLANs	4
Creating hardware filters	5
The logic of the operation of the hardware filters	6
The effects of the action parameters	6
Combining hardware filters and QoS	7
How many filters can you create?	7
1. The filter rules table	7
Extra rules used when combining QoS and hardware filters	8
2. The profile (mask)	9
Are there enough bytes for your set of filters?	10
Some protocols also use filters, so use some of the length	11
How to see the current filter resource usage on the switch	12
Appendix A: How to use the layer 4 mask in classifiers	13
Example 1: ports 2000-2003	14
Points to remember	14
Example 2: ports 5004-5008	15
Example 3: ports 333-777	15

Which products and software versions does this information apply to?

zProducts: AT-8948, AT-9900, x900-48, and x900-24 series

zSoftware versions: 2.7.3 and above

Hardware filters are also available on Layer 3 switches running the AlliedWare Plus OS. See the following How To Note:

zHow To Configure Hardware Filters on SwitchBlade x908, x900-12XT/S, and x900-24 Series Switches

This Note is available from www.alliedtelesis.com/resources/literature/howto_plus.aspx.

Page 2 AlliedWare™ OS How To Note: Hardware Filters