Avaya Configuring Traffic Filters and Protocol Prioritization Manuel d'utilisateur télécharger pdf (Page 46)

Configuring Traffic Filters and Protocol Prioritization

2-12

Latency

Latency, or line delay, speciﬁes how many normal- or low-priority bits the router

can allocate to the transmit queue at any one time. Latency determines, therefore,

the greatest time delay that a high-priority packet can experience.

Latency is based on the line speed of the attached media. The following formula

illustrates how line speed, bits queued, and latency value are related.

The default value for latency is 250 milliseconds (ms). This value usually allows

good throughput while preserving rapid terminal response (rapid echoing of

keystrokes and timely response to commands) over most media types.

You can change the default latency value. Keep in mind, however, that if you

conﬁgure a higher latency value (thus allowing more room on the transmit queue),

the throughput becomes greater, but you sacriﬁce terminal response. We

recommend accepting the default value of 250 ms.

Latency =

Bits Queued

Line Speed (bits per second)

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Avaya Configuring Traffic Filters and Protocol Prioritization Manuel d'utilisateur Page 46