Enterasys Matrix-V V2H124-24P, Configuration Manual

Page: 213 / 498

Class of Service Configuration
3-163
3
CLI* – The following example globally enables IP Precedence service on the switch,
maps IP Precedence value 1 to CoS value 0 on port 5, and then displays all the IP
Precedence settings.
* Mapping specific values for IP Precedence is implemented as an interface configuration
command, but any changes will apply to the all interfaces on the switch.
Mapping DSCP Priority
The DSCP is six bits wide, allowing coding for up to 64 different forwarding
behaviors. The DSCP replaces the ToS bits, and it retains backward compatibility
with the three precedence bits so that non-DSCP compliant, ToS-enabled devices,
will not conflict with the DSCP mapping. Based on network policies, different kinds of
traffic can be marked for different kinds of forwarding. The DSCP default values are
defined in the following table. Note that all the DSCP values that are not specified
are mapped to CoS value 0.
Console(config)#map ip precedence 4-218
Console(config)#interface ethernet 1/5
Console(config-if)#map ip precedence 1 cos 0
4-219
Console(config-if)#end
Console#show map ip precedence ethernet 1/5
4-222
Precedence mapping status: disabled
Port Precedence COS
--------- ---------- ---
Eth 1/5 0 0
Eth 1/5 1 0
Eth 1/5 2 2
Eth 1/5 3 3
Eth 1/5 4 4
Eth 1/5 5 5
Eth 1/5 6 6
Eth 1/5 7 7
Console#
Table 3-16. Mapping DSCP Priority
IP DSCP Value CoS Value
0 0
8 1
10, 12, 14, 16 2
18, 20, 22, 24 3
26, 28, 30, 32, 34, 36 4
38, 40, 42 5
48 6
46, 56 7