Allied Telesis AT-S63 - Manual (Page 260)

Chapter 16: Classifier Commands
260 Section II: Advanced Operations
tcpsport Defines a traffic flow by a source TCP port.
tcpdport Defines a traffic flow by a destination TCP port.
udpsport Defines a traffic flow by a source UDP port.
udpdport Defines a traffic flow by a destination UDP port.
tcpflags Defines a traffic flow by a TCP flag. Options are
URG - Urgent
ACK - Acknowledgement
RST - Reset
PSH - Push
SYN - Synchronization
FIN - Finish
Description
This command creates a classifier. A classifier defines a traffic flow. A
traffic flow consists of packets that share one or more characteristics. A
traffic flow can range from being very broad to very specific. An example
of the former might be all IP traffic while an example of the latter could be
packets with specific source and destination MAC addresses.
You use classifiers with access control lists (ACL) and Quality of Service
policies to define the traffic flow to be affected by the ACL or QoS.
If you create a classifier without any parameters, then all incoming packets
are classified.
The ANY option of a parameter is used when you want to delete the
current setting of a parameter without setting a new value. This leaves the
parameter blank so that it applies to all packets.
Note
For definitions and restrictions on the classifier variables, refer to the
Chapter 13, “Classifiers” in the AT-S63 Management Software
Menus Interface User’s Guide.
Examples
This command creates a classifier for all IP traffic:
create classifier=4 description=”IP flow” protocol=ip
This command creates a classifier for all traffic originating from the subnet
149.22.22.0 destined to the device with the IP address 149.44.44.11: