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DSL-2640T ADSL 2+ Router User Guide
74
QOS
QoS or Quality of Service is used to assign priority for qualified traffic that passes through the Router’s wired interfaces
(LAN and WAN). The Router uses four priority levels with “1” being the highest priority while “4” is the lowest.
The
IGMP Proxy/Snooping
is Disabled by default. This setting will not allow IGMP (Internet Group Management
Protocol) packets to be forwarded from the WAN to the LAN for the purpose of IGMP snooping, or from the LAN to
the WAN to request multicast group membership (IGMP Proxy). IGMP is used to manage multicasting (streaming radio
for example is a multicast), most users will not need to enable this. Some ISPs use IGMP to perform remote
configuration for client devices, such as the Router. If unsure, check with the service provider. To enable IGMP service
to the LAN interface, select Enabled and click the
Apply
button
QoS Configuration menu
To set QoS for the router, first click the
PortMapping QoS
check box in the middle of the window. This will open the
following window. Then select the PVC to associate with the corresponding port and choose a priority for this
combination. The user may also enable IGMP Proxy/Snooping for any PVC at the top of the window by choosing the
PVC from the pull-down menu and clicking the
Enabled
radio button and set a maximum
Bandwidth
in kbps from
Auto
to
64
using the drop-down menu. Click
Apply
to set the configuration.
Note
QoS configured in the QoS menu applies only to data traffic on the Ethernet LAN and the
WAN (ADSL) ports.