Alcatel-Lucent OmniSwitch 6250, Справочное руководство CLI, Страница: 1566 / 2018

QoS Policy Commands
page 39-70 OmniSwitch CLI Reference Guide November 2009
policy condition tcpflags
Configures a specific TCP flag value or combination of flag values as a policy condition.
policy condition condition_name tcpflags [any | all] {F | S | R | P | A | U | E | W} mask {F | S | R | P | A |
U | E | W}
policy condition condition_name no tcpflags
Syntax Definitions
condition_name The name of the condition.
any Match on any of the specified TCP flags.
all Match all specified TCP flags.
F | S | R | P | A | U | E | W TCP flag value to match ( F =fin, S =syn, R =rst, P =psh, A =ack, U =urg,
E =ecn, and W =cwr). The E and W flags are currently not supported .
Defaults
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
Use the no form of the command to remove tcpflags from a condition; however, at least one classifica-
tion parameter must be associated with a condition.
•
Use the any option to indicate that a match on any one of the specified TCP flags qualifies as a match
for the condition. Use the all option to indicate that a match on all specified TCP flags is required to
qualify as a match for the condition.
•
Enter one or more TCP flags after the any or all keyword to indicate that the value of the flag bit must
be set to one to qualify as a match.
•
Enter one or more TCP flags after the mask keyword to indicate which TCP flags to match.
•
If a TCP flag is specified as part of the mask but does not have a corresponding match value specified
with the any or all options, then zero is assumed as the match value. For example, tcpflags all f s mask
f s a looks for the following bit values to determine a match: f =1, s =1, a =0.
•
Typically this condition is used in combination with source ip, destination ip , source port , source
TCP port , or destination TCP port conditions.
•
The source mac , destination mac , and ethertype conditions cannot be combined with the estab-
lished condition parameter.
parameter default
any | all all