Extreme Networks NG300 User Manual page 95

O
observer
operator
P
packet
packet match
application
data/mask
frame
match
network
Sentriant NG Operation Console User Guide, Software Version 2.5
Extreme Networks Sentriant NG system user with read-only access to
the system and application controls.
Extreme Networks Sentriant NG system user with read/write access
to all of the application monitoring and display commands but does
not have access to network segment configuration and Sentriant NG
maintenance.
A piece of a message transmitted over a network. One of the key
features of a packet is that it contains the destination address in
addition to the data.
A Sentriant NG can be configured with packet match rules. The
administrator can define a specific portion of the packet which must
match a supplied data value. In defining the packet location, the
admin must specify the packet base. The base is a well known, defined
location in the packet (by protocol specification).
A packet match rule specifying an application-based location indicates
that the offset and data parameters should be applied starting at the
end of the the Transport Header. This is typically considered the data
portion of the TCP or UDP packet. In ICMP it marks the end of the
ICMP control header and the beginning of the ICMP data. The
application header extends to the end of the data packet.
A packet match rule that compares the contents or data of a packet (at
the specified base/offset) with the user supplied data value. If a mask
is specified, then the contents of the packet (at the specified base/
offset) will first be logically AND'ed with the Mask value and the
result will be compared to the data value.
A packet match rule specifying a frame-based location indicates that
the offset and data parameters should be applied starting from the
Frame header of the packet. Most commonly, the Ethernet header is
stored within the Network portion of the packet.
An administrator can configure whether packet match rules should
trigger for packets that Match the defined parameters, or for packets
that do not match the supplied parameters.
A packet match rule specifying a network-based location indicates that
the offset and data parameters should be applied starting from the
Network header of the packet. Most commonly, the IP protocol header
is stored within the Network portion of the packet.
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