3Com Switch 7754, Configuration Manual

Page: 645 / 940

Defining Advanced ACLs 645
To define the ToS value, you can directly input a value ranging from 0 to 15, or
input a keyword listed in the following table.
If the protocol type is TCP or UDP, you can also define the following information:
Table 514 Description of IP precedence value
Keyword
IP Precedence value in
decimal IP Precedence value in
binary
routine 0 000
priority 1 001
immediate 2 010
flash 3 011
flash-override 4 100
critical 5 101
internet 6 110
network 7 111
Table 515 Description of ToS value
Keyword ToS value in decimal ToS value in binary
normal 0 0000
min-monetary-cost 1 0001
max-reliability 2 0010
max-throughput 4 0100
min-delay 8 1000
Table 516 TCP/UDP-specific rule information
Parameter Type Function Description
source-port
operator port1
[ port2 ]
Source port(s) Defines the source port
information of UDP/TCP
packets The value of operator can
be lt (less than), gt (greater
than), eq (equal to), neq
(not equal to) or range
(within the range of) Only
the “range” operator
requires two port numbers
as the operands, and other
operators require only one
port number as the
operand
port1 and port2 : TCP/UDP
port number(s), expressed
with name(s) or numerals;
when expressed with
numerals, the value range
is 0 to 65,535
destination-port
operator port1
[ port2 ]
Destination
port(s) Defines the destination
port information of
UDP/TCP packets
established TCP connection
established” flag
Indicates that the ACL
rule is only valid for the
first SYN packet (when
the TCP connection
began) TCP-specific argument