| Quality of Service (QoS): Managing Bandwidth More Effectively |
| Using QoS Classifiers To Configure QoS for Outbound Traffic |
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N o t e | A codepoint must have an 802.1p priority assignment (0 - 7) before you can |
| configure a policy for prioritizing packets by TCP or UDP port numbers. If a |
| codepoint you want to use shows |
| DSCP map (show qos |
| proceeding. |
| 4. Configure the switch to assign the DSCP policy to packets with the |
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| specified TCP or UDP port number. |
| Syntax: qos |
| This command is optional if a priority has already |
| been assigned to the < codepoint >. The command creates |
| a DSCP policy by assigning an 802.1p priority to a |
| specific DSCP. When the switch applies this policy to a |
| packet, the priority determines the packet’s queue in |
| the outbound port to which it is sent. If the packet leaves |
| the switch on a tagged port, it carries the 802.1p |
| priority with it to the next downstream device. For |
| IPv4 packets, the DSCP will be replaced by the codepoint |
| specified in this command. (Default: |
| |
| Syntax: qos < |
| Assigns a DSCP policy to outbound packets having the |
| specified TCP or UDP application port number and |
| overwrites the DSCP in these packets with the assigned |
| <codepoint > value. This policy includes an 802.1p |
| priority and determines the packet’s queue in the |
| outbound port to which it is sent. (The <codepoint > must |
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| |
| it carries the 802.1p priority with it to the next |
| downstream device. (Default: |
| no qos < |
| Deletes the specified UDP or TCP port number as a QoS |
| classifier. |
| show qos |
| Displays a listing of all TCP and UDP QoS classifiers |
| currently in the |