Quality of Service (QoS): Managing Bandwidth More Effectively

Using QoS Classifiers To Configure Quality of Service for Outbound Traffic

For example, configure and list the 802.1p priority for packets carrying the following IP addresses:

IP Address

802.1p Priority

 

 

10.28.31.17

10.28.31.1305

10.28.31.1001

10.28.31.1011

Figure 15-7. Example of Configuring and Listing 802.1p Priority Assignments for Packets Carrying Specific IP Addresses

Assigning a DSCP Policy Based on IP Address

This option assigns a previously configured DSCP policy (codepoint and 802.1p priority) to outbound IP packets having the specified IP address (either source or destination). That is, the switch:

1.Selects an incoming IP packet on the basis of the source or destination IP address it carries.

2.Overwrites the packet’s DSCP with the DSCP configured in the switch for such packets, and assigns the 802.1p priority configured in the switch for the new DSCP. (Refer to “Differentiated Services Codepoint (DSCP)

Mapping” on page 15-51.)

3.Forwards the packet through the appropriate outbound port queue.

For more on DSCP, refer to “Terminology” on page 15-5.

Steps for Creating a Policy Based on IP Address. This procedure cre­ ates a DSCP policy for IP packets carrying the selected IP address (source or destination).

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