ZyXEL Communications VMG1312-B Series, Руководство пользователя

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Chapter 10 Quality of Service (QoS)
VMG1312-B Series User’s Guide
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10.4.1 Adding a QoS Queue
Click Add ne w Qu e u e or t he edit icon in t he Qu e u e Se t u p screen t o configure a queue.
Figure 66 Queue Set up: Add
The following t able describes t he labels in t his screen.
10.5 The Class Setup Screen
Use t his screen t o add, edit or delet e QoS classifiers. A classifier groups t raffic int o dat a flows
according t o specific crit eria such as t he source address, dest inat ion address, source port num ber,
dest inat ion port num ber or incom ing int erface. For exam ple, you can configure a classifier t o select
t raffic from t he sam e prot ocol port ( such as Telnet ) t o form a flow.
Table 43 Queue Set up: Add
LABEL DESCRIPTION
Act ive Select t o enable or disable t his queue.
Nam e Ent er t he descr ipt ive nam e of t his queue.
I nt erface Select t he int er face t o which t his queue is applied.
This field is read- only if you are edit ing t he queue.
Pr ior it y Select t he prior it y level ( from 1 t o 7) of t his queue.
The sm aller t he num ber, t he higher t he priorit y level. Traffic assigned t o higher priorit y
queues get s t hrough fast er w hile t raffic in low er priorit y queues is dr opped if t he net w ork is
congest ed.
Weight Select t he w eight ( from 1 t o 8) of t his queue.
I f t w o queues have t he sam e pr iorit y level, t he Device divides t he bandw idt h across t he
queues accor ding t o t heir w eight s. Queues w it h larger w eight s get m ore bandw idt h t han
queues w it h sm aller w eight s.
Buffer
Managem ent This field displays D r op Ta il ( D T) . D r op Ta il ( D T) is a sim ple queue m anagem ent
algorit hm t hat allow s t he Device buffer t o accept as m any packet s as it can unt il it is full.
Once t he buffer is full, new packet s t hat arrive are dropped unt il t here is space in t he buffer
again ( packet s are t ransm it t ed out of it ) .
Rat e Lim it Specify t he m axim um t ransm ission rat e ( in Kbps) allow ed for t raffic on t his queue.
OK Click OK t o save your changes.
Cancel Click Ca n ce l t o exit t his screen w it hout saving.