Enterasys Networks Fast Network 10 - Manual (Page 89)

Port Filters
Fast Network 10 User Guide Page 5-9
Field
Origin
Either TYPE, IP, MAC, or SR (see Field Offset
description). The origin is the field from which the
offset count starts.
TYPE
Field
Offset
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.
If the origin is IP, then the offset is relative to the end of
the IP Header (an offset of zero indicates the portion
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.
Field
Value
The two digit hexadecimal value of each of the eight
octets beginning at the origin and offset by the value
specified above. The octets must be separated by
spaces. This is the value that the filter is using when it
does a comparison for a match, for example a MAC
address.
Field
Mask
An eight octet mask applied to the packet’s eight
octets before comparing them to the Field Value
specified above. The mask octets must be separated
by spaces. This is a mask of the specified Field Value.
Filter
Index
Filter number for this filter. For example, a value of one
indicates that this is the first filter in the Filter Table. If
you use the default index of 1, any other filters you
have previously defined will be renumbered starting
with 2. Although filters are assigned to a port, filter
indexes are not; they are assigned sequentially to all
filters for all ports.
One
Table 5-2 Port Filter Configuration Fields (Continued)
Field Description Default