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5-42
Quality of Service (QoS): Managing Bandwidth More Effectively
QoS Operating Notes and Restrictions
Table 5-12. Maximum QoS Entries.
Attempting to exceed the above limits generates the following message
in the CLI:
Unable to add this QoS rule. Maximum number (entry-#)
already reached.
■ Not Supported: Use of an inbound 802.1p packet priority as a classifier
for remapping a packet’s outbound priority to different 802.1p priority.
For example, where inbound packets carry an 802.1p priority of 1, QoS
cannot be configured use this priority as a classifier for changing the
outbound priority to 0.
■ Monitoring Shared Resources: The QoS feature shares internal switch
resources with several other features. The switch provides ample
resources for all features. However, if the internal resources become fully
subscribed, additional QoS provisions cannot be configured until the
necessary resources are released from other uses. For information on
determining the current resource availability and usage, refer to the
appendix titled “Monitoring Resources” in the Management and Config-
uration Guide for your switch.
Switch Software
Version
Maximum
QoS Entries
Notes
Switch 6120 250* • Each device (IP address) QoS
configuration uses two entries.
• Each TCP/UDP port QoS configuration
uses two entries.
• All other classifier configurations use
one entry each.
*Configuring device (IP address) or TCP/UDP QoS entries reduces this maximum. See the
“Notes” column.