ZyXEL Communications SBG5500-A, User Manual

Page: 196 / 274

Chapter 11 Bandwidth Management
SBG5500 Series User’s Guide
196
11.2 The General Screen
Click Configuration > Bandwidth Management > General to open the screen as shown next.
Use this screen to enable or disable QoS and set the upstream bandwidth. See Section 11.1 on page 194
for more information.
Figure 143 Configuration > Bandwidth Management > General
The following table describes the labels in this screen.
Table 84 Configuration > Bandwidth Management > General
LABEL DESCRIPTION
Enable Select the Enable check box to turn on QoS to improve your network performance.
WAN Managed
Upstream
Bandwidth Enter the amount of upstream bandwidth for the WAN interfaces that you want to allocate using
QoS.
The recommendation is to set this speed to match the interfaces’ actual transmission speed. For
example, set the WAN interfaces’ speed to 100000 kbps if your Internet connection has an
upstream transmission speed of 100 Mbps.
You can set this number higher than the interfaces’ actual transmission speed. The SBG uses up
to 95% of the DSL port’s actual upstream transmission speed even if you set this number higher
than the DSL port’s actual transmission speed.
You can also set this number lower than the interfaces’ actual transmission speed. This will cause
the SBG to not use some of the interfaces’ available bandwidth.
If you leave this field blank, the SBG automatically sets this number to be 95% of the WAN
interfaces’ actual upstream transmission speed.
LAN Managed
Downstream
Bandwidth Enter the amount of downstream bandwidth for the LAN interfaces (including WLAN) that you
want to allocate using QoS.
The recommendation is to set this speed to match the WAN interfaces’ actual transmission
speed. For example, set the LAN managed downstream bandwidth to 100000 kbps if you use a
100 Mbps wired Ethernet WAN connection.
You can also set this number lower than the WAN interfaces’ actual transmission speed. This will
cause the SBG to not use some of the interfaces’ available bandwidth.
If you leave this field blank, the SBG automatically sets this to the LAN interfaces’ maximum
supported connection speed.