3Com 3C15500 - Network Director - PC, User Manual, Page: 640 / 924

636 C
HAPTER
15: P
RIORITIZING
N
ETWORK
T
RAFFIC
There are several servers that 3Com Network Director will not allow
you to select for blocking. In addition, there are various problems that
may arise due to selecting servers for blocking. For more information
see
“Potential Hazards When Blocking Traffic To and From Servers” on
page 659 .
Applications Step
You can select applications for prioritization or blocking (See Figure 347 ).
The Prioritize Network Traffic Wizard defines an application as a collection
of classifier rules, each of which specifies one method of identifying
traffic belonging to that application. These classifier rules specify the
values that certain fields with a packet must have in order for that packet
to be considered as belonging to the application.
Figure 347 Prioritize Network Traffic Wizard - Applications
When a device is configured with the classifier rules for a particular
application only one of the rules needs to match a packet in order for the
packet to be identified as belonging to that application.
■
Prioritized Applications — when you select an application for
prioritization, traffic identified as belonging to that application is
treated as more important than non-prioritized traffic by the
configured devices. This means that the traffic will flow through the
network faster and with less chance of being dropped.