Port Filters

 

Table 5-2 Port Filter Configuration Fields (Continued)

 

 

 

 

 

Field

Description

 

Default

 

 

 

 

Field

Either TYPE, IP, MAC, or SR (see Field Offset

 

 

description). The origin is the field from which the

 

TYPE

Origin

 

offset count starts.

 

 

 

 

 

 

 

 

 

 

The decimal offset of the portion of the packet to be

 

 

 

examined. If the origin is TYPE, the field offset value is

 

 

 

relative to the end of the Ethernet frame type,

 

 

 

regardless of whether or not the frame type is SNAP

 

 

 

encapsulated. For example, for IP packets, a field

 

 

 

origin of TYPE with a field offset of zero indicates the

 

 

 

start of the IP header.

 

 

Field

If the origin is IP, then the offset is relative to the end of

 

 

the IP Header (an offset of zero indicates the portion

 

 

Offset

 

 

immediately following the end of the IP Header).

 

 

 

 

 

 

If the origin is MAC, then the offset is relative to the

 

 

 

beginning of the MAC addresses (an offset of zero

 

 

 

indicates the start of the destination MAC address).

 

 

 

If the origin is SR, then the offset is relative to the end

 

 

 

of the MAC header, including the Source Routing (SR)

 

 

 

header, if present.

 

 

 

 

 

 

 

The two digit hexadecimal value of each of the eight

 

 

 

octets beginning at the origin and offset by the value

 

 

Field

specified above. The octets must be separated by

 

 

Value

spaces. This is the value that the filter is using when it

 

 

 

does a comparison for a match, for example a MAC

 

 

 

address.

 

 

 

 

 

 

 

An eight octet mask applied to the packet’s eight

 

 

Field

octets before comparing them to the Field Value

 

 

Mask

specified above. The mask octets must be separated

 

 

 

by spaces. This is a mask of the specified Field Value.

 

 

 

 

 

 

 

Filter number for this filter. For example, a value of one

 

 

 

indicates that this is the first filter in the Filter Table. If

 

 

Filter

you use the default index of 1, any other filters you

 

 

have previously defined will be renumbered starting

 

One

Index

 

with 2. Although filters are assigned to a port, filter

 

 

 

 

 

 

indexes are not; they are assigned sequentially to all

 

 

 

filters for all ports.

 

 

 

 

 

 

Fast Network 10 User Guide

Page 5-9

Page 89
Image 89
Enterasys Networks Fast Network 10 manual Type