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12 match ip precedence, 13 match ip tos, 14 match protocol – Kontron AT8902 Full Size CLI User Manual

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AT8901/2/3

AT8901/2/3 CLI Reference Manual

Page 4 - 12

Default

none

Format

match ip dscp

Mode

Class-Map Config

4.3.12

match ip precedence

This command adds to the specified class definition a match condition based on the
value of the IP Precedence field in a packet, which is defined as the high-order three
bits of the Service Type octet in the IP header (the low-order five bits are not checked).
The precedence value is an integer from 0 to 7.

NOTE: The IP DSCP, IP Precedence, and IP ToS match conditions are alter-

native ways to specify a match criterion for the same Service Type
field in the IP header, but with a slightly different user notation.

Default

none

Format

match ip precedence <0-7>

Mode

Class-Map Config

4.3.13

match ip tos

This command adds to the specified class definition a match condition based on the
value of the IP TOS field in a packet, which is defined as all eight bits of the Service
Type octet in the IP header. The value of

is a two-digit hexadecimal

number from 00 to ff. The value of

is a two-digit hexadecimal number from

00 to ff. The

denotes the bit positions in

that are used for

comparison against the IP TOS field in a packet. For example, to check for an IP TOS
value having bits 7 and 5 set and bit 1 clear, where bit 7 is most significant, use a

value of a0 (hex) and a

of a2 (hex).

NOTE: The IP DSCP, IP Precedence, and IP ToS match conditions are alter-

native ways to specify a match criterion for the same Service Type
field in the IP header, but with a slightly different user notation.

NOTE: This “free form” version of the IP DSCP/Precedence/TOS match spec-

ification gives the user complete control when specifying which bits of
the IP Service Type field are checked.

Default

none

Format

match ip tos

Mode

Class-Map Config

4.3.14

match protocol

This command adds to the specified class definition a match condition based on the
value of the IP Protocol field in a packet using a single keyword notation or a numeric
value notation.

To specify the match condition using a single keyword notation, the value for <

protocol-

name>

is one of the supported protocol name keywords. The currently supported values

are:

icmp, igmp, ip, tcp, udp

. A value of

ip

matches all protocol number values.