Telindus 1031, Руководство пользователя и справочник

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Telindus 1031 Router Chapter 7
User manual Configuring the router
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7.6.1 Introducing traffic and priority policy
What is traffic and priority policy?
Because of the bursty nature of voice / video / data traffic, sometimes the amount of traffic exceeds the
speed of a link. At this point, the Telindus 1031 Router has to decide what to do with this “excess” of
traffic:
• Buffer the traffic in a single queue and let the first packet in be the first packet out?
• Or put packets into different queues and service certain queues more often (also known as priority
queuing)?
These questions are dealt with by the traffic and priority policy mechanisms:
• The traffic policy determines, on traffic overload conditions, how and which queues are filled with the
“excess” data.
• The priority policy determines how and which queues are emptied.
What is a priority queuing?
Using the traffic and priority policy features you can perform priority queuing. This allows you to define
how traffic is prioritised in the network. E.g. to ensure that voice, video or other streaming media is serv-
iced before (or after) other traffic types, to ensure that web response traffic is routed before normal web
browsing traffic, etc.
There are 7 queues:
Queue Queue type Description
1 - 5 user configurable queue The user can decide which data goes into which queue.
6 low delay queue The user can decide which data goes into this queue. This
queue usually is addressed more often then the user con-
figurable queues.
7 system queue This queue is filled with mission critical data (e.g.link moni-
toring messages etc.) and has priority over all other queues.