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Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure Quality of Service for Outbound Traffic
4. Configure the switch to assign the DSCP policy to packets from the
specified source-port.
Syntax: qos dscp-map < codepoint > priority < 0 - 7 >
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 priority 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 in a tagged VLAN, it carries the 802.1p
priority with it to the next downstream device.
(Default: For most codepoints,
No-override. See figure
15-8 on page 15-52.)
Syntax: interface [ e ] < port-list > qos dscp < codepoint >
Assigns a DSCP policy to packets from the specified
source-port(s), and overwrites the DSCP in these pack-
ets 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.
If the packet leaves the switch in a tagged VLAN, it
carries the 802.1p priority with it to the next down-
stream device. (Default:
No-override)
no interface [ e ] < port-list > qos
Removes QoS classifier for the specified source-port(s).
show qos source-port
Displays a listing of all source-port QoS classifiers
currently in the running-config file.
15-48