Alcatel-Lucent 060321-10, Rev. B, Справочное руководство CLI

Страница: 1709 / 2354

QoS Policy Commands policy condition tcpflags
OmniSwitch CLI Reference Guide March 2011 page 26-69
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 10K
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 , destina-
tion port , source TCP port , or destination TCP port conditions.
•
Note that even though tcpflags can be used with most action parameters, it is mainly intended for ACL
use.
parameter default
any | all all