User guide

184 CHAPTER 8: PRIORITIZING NETWORK TRAFFIC
If a device is listed as not supporting ‘Classify Servers’ or ‘Classify
Applications’ and you select a server or an application for prioritization,
the wizard will create a classifier for the Business Critical service level’s
DiffServ codepoint value and map it to the Business Critical service level
instead.
If a device is listed as supporting ‘Drop Traffic’ it will only be configured to
drop traffic to and from servers selected for blocking if it is listed as
supporting ‘Classify Servers’. Similarly, a device will only be configured to
drop traffic for applications selected for blocking it if is listed as
supporting ‘Classify Applications’.
Key Considerations The following section provides assistance when configuring traffic
prioritization on your network:
Resource Warnings Resource warnings occur for the following reasons:
■ Each device type has a certain number of resources available for
classification which are managed in different ways by different device
types. If a particularly complex configuration is selected then it may
not be possible to configure all of the supported devices to match the
configuration exactly as the configuration may require more resources
than are available on some or all of the selected devices.
■ On some devices the classification functionality may differ depending
on the agent version running on that device. Similarly, it is not possible
to configure a device to exactly match a configuration that requires a
certain level of classification functionality if the appropriate agent is
not installed on the device.
If either of these situations occur a Resource Warning dialog is displayed
prior to the Configuration Summary step. The dialog will list each distinct
problem that has been detected as shown in Table 2 1
.
3Com Network Administrator for HP OpenView.book Page 184 Wednesday, November 12, 2003 2:33 PM