HP 3500 Series Advanced Traffic Management Manual page 238

Quality of Service: Managing Bandwidth More Effectively
Globally-Configured QoS
5-20
All Switches: For explicit QoS support of IP subnets, HP recommends
■
forcing IP subnets onto separate VLANs and then configuring VLAN-based
classifiers for those VLANs.
■ For Devices that Do Not Support 802.1Q VLAN-Tagged Ports:
For communication between these devices and the switch, connect
the device to a switch port configured as Untagged for the VLAN in
which you want the device's traffic to move.
■ Port Tagging Rules: For a port on the switch to be a member of a
VLAN, the port must be configured as either Tagged or Untagged for
that VLAN. A port can be an untagged member of only one VLAN of
a given protocol type. Otherwise, the switch cannot determine which
VLAN should receive untagged traffic. For more on VLANs, refer to
chapter 1, "Static Virtual LANs (VLANs)".
Maximum Global QoS Remarking Entries: The switches covered in
■
this guide accept the maximum number of configured outbound 802.1p
priority and DSCP entries shown in Table 5-7.
Table 5-7. Maximum Number of QoS Entries.
Switch Software
Version
Switch 8212zl
Series 5400zl
Series 5300yl
*Configuring IP Device (IP address) and TCP/UDP global QoS classifiers reduces this
maximum. For more information, see the "Notes" column.
If the global QoS configurations on a switch exceed the maximum number
of entries shown in Table 5-7, the following error message is displayed:
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.
Maximum QoS
Remarking
• Each IP Device (IP address) QoS
configuration uses two entries.
• Each TCP/UDP Port QoS configuration
uses two entries.
250* configured
• All other global QoS classifier
entries
configurations use one entry each.
Notes