User's Manual

634 CHAPTER 15: PRIORITIZING NETWORK TRAFFIC
Figure 346 NBX step
When 3Com Network Director automatically selects NBX phone traffic for
prioritization, traffic identified as NBX phone traffic is treated as more
important than non-prioritized traffic and other prioritized traffic by the
configured devices. This means that the phone traffic will flow through
the network faster and with less chance of being dropped when
compared with any other traffic in your network. This improves the
quality of your NBX phone calls and ensures that the quality remains high
even when your network is congested.
3Com Network Director configures devices that are capable of
performing complex application classification to identify traffic as NBX
phone traffic by creating classifier rules. See “
3Com Network Director
Classifier Rules for NBX Phone Traffic” on page 654 for definitions of the
classifier rules used for NBX phone traffic by 3Com Network Director.
Traffic that matches these classifier rules is also mapped to the Voice
service level. See “
3Com Network Director Service Levels” on page 655
for definitions of the service levels used by 3Com Network Director.
When you are configuring 3Com devices that are not capable of complex
application classification, 3Com Network Director configures these
devices to identify traffic with the Voice DiffServ codepoint. Traffic that
matches this classifier rule is also mapped to the Voice service level.