ZyXEL Communications VMG1312-B Series, Руководство пользователя

Страница: 170 / 376

Chapter 10 Quality of Service (QoS)
VMG1312-B Series User’s Guide
170
The following t able describes t he labels in t his screen.
10.4 The Queue Setup Screen
Click N e t w or k Se t t in g > QoS > Qu e ue Se t u p t o open t he screen as shown next .
Table 41 Net work Set t ing > QoS > General
LABEL DESCRIPTION
QoS Select t he Ena ble check box t o t urn on QoS t o im prove your net w ork perform ance.
WAN Managed
Upst r eam
Bandw idt h Ent er t he am ount of upst ream bandw idt h for t he WAN int erfaces t hat you want t o allocat e
using QoS.
The recom m endat ion is t o set t his speed t o m at ch t he int erfaces’ act ual t ransm ission speed.
For exam ple, set t he WAN int er faces’ speed t o 100000 kbps if your I nt er net connect ion has
an upst r eam t ransm ission speed of 100 Mbps.
You can set t his num ber higher t han t he int erfaces’ act ual t ransm ission speed. The Device
uses up t o 95% of t he DSL port ’s act ual upst ream t ransm ission speed even if you set t his
num ber higher t han t he DSL port ’s act ual t ransm ission speed.
You can also set t his num ber lower t han t he int erfaces’ act ual t ransm ission speed. This will
cause t he Device t o not use som e of t he int er faces’ available bandw idt h.
I f you leave t his field blank, t he Device aut om at ically set s t his num ber t o be 95% of t he
WAN int erfaces’ act ual upst ream t ransm ission speed.
LAN Managed
Dow nst r eam
Bandw idt h Ent er t he am ount of dow nst r eam bandw idt h for t he LAN int erfaces ( including WLAN) t hat
you want t o allocat e using QoS.
The recom m endat ion is t o set t his speed t o m at ch t he WAN int er faces’ act ual t ransm ission
speed. For exam ple, set t he LAN m anaged dow nst r eam bandw idt h t o 100000 kbps if you
use a 100 Mbps w ired Et hernet WAN connect ion.
You can also set t his num ber low er t han t he WAN int er faces’ act ual t ransm ission speed. This
will cause t he Device t o not use som e of t he int erfaces’ available bandwidt h.
I f you leave t his field blank, t he Device aut om at ically set s t his t o t he LAN int er faces’
m axim um support ed connect ion speed.
Upst r eam
t raffic pr ior it y
Assigned by Select how t he Device assigns priorit ies t o various upst ream t raffic flow s.
• N on e : Disables aut o priorit y m apping and has t he Device put packet s int o t he queues
according t o your classificat ion rules. Traffic w hich does not m at ch any of t he
classificat ion rules is m apped int o t he default queue w it h t he low est priorit y.
• Et h e r n e t Pr ior it y: Aut om at ically assign priorit y based on t he I EEE 802.1p pr ior it y level.
• I P Pr e ce de n ce : Aut om at ically assign priorit y based on t he first t hree bit s of t he TOS
field in t he I P header.
• Pa ck e t Le n gt h : Aut om at ically assign priorit y based on t he packet size. Sm aller packet s
get higher priorit y since cont rol, signaling, VoI P, int ernet gam ing, or ot her real- t im e
packet s are usually sm all while larger packet s are usually best effort dat a packet s like
file t ransfers.
Apply Click Apply t o save your changes.
Cancel Click Ca n ce l t o rest ore your previously saved set t ings.