CONFIGURING THE SWITCH
CLI – The following example shows how to assign WRR weights of 1, 4, 16 and 64 to the CoS priority queues 0, 1, 2 and 3.
Console(config)#queue bandwidth 1 4 16 64 | ||
Console(config)#exit |
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Console#show queue bandwidth |
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Queue ID Weight |
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0 | 1 |
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1 | 4 |
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2 | 16 |
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3 | 64 |
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Console# |
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Mapping Layer 3/4 Priorities to CoS Values
This switch supports a common method of prioritizing layer 3/4 traffic to meet application requirements. Traffic priorities can be specified in the IP header of a frame, using the priority bits in the Type of Service (ToS) octet. The ToS octet may contain three bits for IP Precedence or six bits for Differentiated Services Code Point (DSCP) service. When these services are enabled, the priorities are mapped to a Class of Service value by the switch, and the traffic then sent to the corresponding output queue.
Because different priority information may be contained in the traffic, this switch maps priority values to the output queues in the following manner:
•The precedence for priority mapping is IP Precedence or DSCP Priority and then Default Port Priority.
•IP Precedence and DSCP Priority cannot both be enabled. Enabling one of these priority types will automatically disable the other.
•IP Precedence and DSCP Priority settings are global and apply to all ports on the switch.
Selecting IP Precedence/DSCP Priority
The switch allows you to choose between using IP Precedence or DSCP priority. Select one of the methods or disable this feature.
