ZyXEL Communications NVG2053, User Manual

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Chapter 11 Quality of Service (QoS)
NVG2053 User’s Guide
135
11.3 Technical Reference
The following section contains additional technical information about the NVG2053
features described in this chapter.
QoS versus Cos
QoS is used to prioritize source-to-destination traffic flows. All packets in the same
flow are given the same priority. CoS (class of service) is a way of managing traffic
Criteria Configuration
Use the following fields to configure the criteria for traffic classification.
From Interface
Select from which LAN, WLAN or FXS interface traffic of this class
should come.
Source
Address Select the check box and enter the source IP address in dotted
decimal notation and select a source subnet mask.
Port Range Select the check box and enter the port number(s) of the source.
MAC Select the check box and enter the source MAC address of the packet.
Destination
IP Address Select the check box and enter the destination IP address in dotted
decimal notation and select a source subnet mask.
Port Range Select the check box and enter the port number(s) of the source.
Others
DSCP Select this option and specify a DSCP (DiffServ Code Point) number
between 0 and 63 in the field provided.
Packet
modification
DSCP Mark
If you select Mark, enter a DSCP value with which the NVG2053
replaces the DSCP field in the packets.
If you select Unchange, the NVG2053 keep the DSCP field in the
packets.
Packet
forwarding
Forward to
Interface
Select a WAN interface through which traffic of this class will be
forwarded out. If you select Unchange, the NVG2053 forward traffic
of this class according to the default routing table.
Back Click Back to return to the previous screen without saving.
Apply Click Apply to save your changes back to the NVG2053.
Cancel Click Cancel to begin configuring this screen afresh.
Table 41 QoS Class Configuration (continued)
LABEL DESCRIPTION