Recommendations for end-to-end QoS

Last Updated : Nov 05, 2012 |
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You can use DiffServ when end-to-end QoS is desired.. Modern routers can map DiffServ Code Points (DSCP) to 802.1p priority values, so 802.1p tags can be recreated on each Ethernet link.
IEEE 802.1p states a standard according to which these bits are used for CoS. The precedence is listed in IEEE 802.1 precedence and service mapping.
IEEE 802.1 precedence and service mapping
User priority
Service mapping
000
Default, assumed to be best effort
001
Reserved, less than best effort
010
Reserved
011
Reserved
100
Delay sensitive, no bound
101
Delay sensitive, 100 ms bound
110
Delay sensitive, 10 ms bound
111
Network control
Related links
IEEE 802.1Q standard