HP 3500 Series Advanced Traffic Management Manual page 268

Quality of Service: Managing Bandwidth More Effectively
Globally-Configured QoS
HP Switch(config)# show qos dscp-map
DSCP -> 802.p priority mappings
DSCP CodePoint DSCP Value 802.1p tag
-------------- ---------- ----------- --------------------------------
000000
000001
000010
000011
000100
000101
000110
000111
.
Figure 5-18. Displaying the Current DSCP-Map Configuration
5-50
Example. The following example shows how to configure new DSCP poli-
cies on matching packets with the specified DSCP codepoints.
Received Policy
DSCP DSCP
001100 000010
001101 000101
1. Determine if the DSCP codepoints that you want to use to mark matching
packets already have an 802.1p priority assigned, which could indicate
use by existing applications (show qos dscp-map command). This is not a
problem as long as the configured priorities are acceptable for all appli-
cations using the same DSCP (see "Notes on Changing a Priority Setting"
on page 5-93).
Also, note that a DSCP codepoint must have a preconfigured 802.1p
priority (0 - 7) before you can use the codepoint to mark matching packets.
If a codepoint you want to use shows No-override in the Priority column
of the DSCP Policy table (show qos dscp-map command), you must first
configure a priority for the codepoint before proceeding (qos dscp-map
priority command). See "Differentiated Services Codepoint (DSCP) Map-
ping" on page 5-90 for more information.
0 No-override
1 No-override
2 No-override
3 No-override
4 No-override
5 No-override
6 No-override
7 No-override
. .
2. Configure the desired policies (codepoint and associated 802.1p priority)
in the DSCP table:
802.1p Policy Name
Priority (Optional)
6 Level 6
4 Level 4
DSCP Policy name
The DSCPs for this
example have not yet
been assigned an
802.1p priority level.