Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 1023)

QoS Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 39.17
match tcp-flags
Sets one or more TCP flags (control bits) for a class-map to match on.
Use the no variant of this command to remove one or more TCP flags for a class-map to
match on.
Syntax match tcp-flags {[ack][fin][rst][syn][urg]}
no match tcp-flags {[ack][fin][rst][syn][urg]}
Mode Class Map Configuration
Examples To set the class-map’s TCP flags to ack and syn, use the commands:
To remove the TCP flags ack and rst, use the commands:
Parameter Description
ack Acknowledge.
fin Finish.
rst Reset.
syn Synchronize.
urg Urgent.
awplus# configure terminal
awplus(config)# class-map
awplus(config-cmap)# match tcp-flags ack syn
awplus# configure terminal
awplus(config)# class-map
awplus(config-cmap)# no match tcp-flags ack rst