Extreme Networks ExtremeWare Enterprise Manager, Инструкция по установке и эксплуатации

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devices. It also detects overlaps and conflicts in policies, with precedence rules for
resolving conflicting QoS rules.
Note: The ExtremeWare Enterprise Manager Policy System is based on the
ExtremeWare 5.0’s Policy-Based QoS. For details on the capabilities and
implementation of QoS in Extreme Switches, see the chapter on Quality of
Service in the
ExtremeWare Software User Guide V 4.0 , and the Release Note
for ExtremeWare 5.0 .
P
OLICY
T
YPES
The ExtremeWare Enterprise Manager Policy System supports several types of policies:
• Application Server Policy maps a QoS treatment to traffic moving to and from an
application on a particular server connected to a port on an Extreme switch. You
only need to specify the application (which translates to a well-known Layer 4 port)
and server when you create the policy, and the Plolicy System maps this to the
appropriate port. As shown in Figure 8-1 below, the policy you specify is
implemented as Source Port QoS on the traffic outbound from source port, and as IP
QoS for the traffic inbound to via source port to the server.
Figure 8-1: Application Server Policy
For an application server policy, you can specify only one application (e.g. HTTP,
FTP, Baan) as the endpoint, but multiple servers (not shown in the illustration) if
they are all running the specified application. The exception is if you select “ANY”
as the application, in which case the Policy System will use the IP address alone as
the endpoint (without a Layer 4 port) for every server you specify. This is discussed
in more detail in the section “Application Server Policy Definition Tab” on page 8-24.