Grandstream Networks GWN7000 User Manual page 21

Link -layer Adaptation
Overhead
Advanced Qdisc
Options
Squash DSCP on
ingress
Ignore DSCP on
ingress
ECN Status on
Inbound packets
ECN Status on
outbound packets
Note:
It is not advised to configure an interface with smart queueing and filter based QoS queuing at the same
time, and if it's the case then the router will give preference to setting up the WAN interface in Smart Queue
mode if both types of QoS are configured for the interface.
Sample Scenario
Let's suppose that a user wants to activate Smart Queue QoS on his GWN7000 router which is connected
to his cable modem via WAN1. The user has an internet connection speed of 100Mbps down and 10Mbps
UP.
To have basic configuration, user should follow below steps:
If cake queuing discipline method is selected.
•
layer_cake: Three-tier prioritization system with cake as a replacement
for HTB rate limiting.
•
piece_of_cake: Single queue with cake as a replacement for HTB rate
limiting.
Select the link-layer type for the WAN connection. This can be used to
compensate for the link-layer overhead of certain types of WAN connections.
•
None (default).
•
Ethernet (should be selected for VDSL connections).
•
ATM (should be selected for ADSL connections).
If the link-layer is set to something other than "none", then the link-layer overhead
setting can be used to specify how many bytes of overhead there are.
Defaults are 8 for Ethernet, and 44 for ATM.
Check this option in order to show advanced Qdisc options to be used.
Select whether to squash or not the DSCP on ingress packets. By default, this
option is disabled.
Select whether to ignore DSCP on ingress packets or not. By default, this option
is disabled.
Select whether to set or not ECN status on inbound packets.
Select whether to set or not ECN status on outbound packets.
QoS in VoIP Environment Guide
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