SMC Networks SMC6750L2 , S, 2-60, Mapping IP Precedence

C ONFIGURING THE S WITCH
2-60
CLI – The following example globally enables IP Precedence service on
the switch.
Mapping IP Precedence
The Type of Service (ToS) octet in the IPv4 header includes three
precedence bits defining eight different priority levels ranging from highest
priority for network control packets to lowest priority for routine traffic.
The default IP Precedence values are mapped one-to-one to Class of
Service values (i.e., Precedence value 0 maps to CoS value 0, and so forth).
Bits 6 and 7 are used for network control, and the othe r bits for various
application types. ToS bits are defined in the following table.
Command Attributes
•IP Precedence Priority Table – Shows the IP Precedence to CoS
map.
•Class of Service Value – Maps a CoS value to the selected IP
Precendence value. Note that “0” represents low priority and “7”
represent high priority.
Console(config)#map ip precedence 3-128
Console#
Priority Level Traffic Type
7 Network Control
6 Internetwork Control
5Critical
4Flash Override
3Flash
2 Immediate
1Priority
0Routine