ProCurve 6400cl Guida Utente Pagina 321

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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
10.28.31.1 7
10.28.31.130 5
10.28.31.100 1
10.28.31.101 1
Figure 8-12. Example of Configuring and Listing 802.1p Priority Assignments for
Packets Carrying Specific IP Addresses
Assigning a DSCP Policy Based on IP Address
Note On 5300xl and 4200vl switches, DSCP policies cannot be applied to IPv4
packets having IP options. For more information on packet criteria and
restrictions, refer to table 8-15 on page 8-73.
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 IPv4 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 8-64.)
3. Forwards the packet through the appropriate outbound port queue.
8-33
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