ZyXEL Communications P-3202HN-Ba, User Manual

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Chapter 14 Quality of Service (QoS)
IAD User’s Guide
171
14.3.2 QoS Example
In the following figure, your Internet connection has an upstream transmission
speed of 50 Mbps. You configure a classifier to assign the highest priority queue
(6) to VoIP traffic from the LAN interface, so that voice traffic would not get
delayed when there is network congestion. Traffic from the boss’s IP address
(10.1.1.23 for example) is mapped to queue 5. Traffic that does not match these
Service This field simplifies classifier configuration by allowing you to select a
predefined application. When you select a predefined application, you
do not configure the rest of the filter fields.
SIP (Session Initiation Protocol) is a signaling protocol used in
Internet telephony, instant messaging and other VoIP (Voice over IP)
applications. Select the check box and select VoIP(SIP) from the
drop-down list box to configure this classifier for traffic that uses SIP.
File Transfer Protocol (FTP) is an Internet file transfer service that
operates on the Internet and over TCP/IP networks. A system running
the FTP server accepts commands from a system running an FTP
client. The service allows users to send commands to the server for
uploading and downloading files. Select the check box and select FTP
from the drop-down list box to configure this classifier for FTP traffic.
Protocol Select this option and select the protocol (TCP or UDP) or select User
defined and enter the protocol (service type) number. 0 means any
protocol number.
Packet Length Select this option and enter the minimum and maximum packet
length (from 28 to 1500) in the fields provided.
DSCP Select this option and specify a DSCP (DiffServ Code Point) number
between 0 and 63 in the field provided.
Ethernet Priority Select this option and select a priority level (between 0 and 7) from
the drop down list box.
"0" is the lowest priority level and "7" is the highest.
VLAN ID Select this option and specify a VLAN ID number between 2 and 4094.
Physical Port Select this option and select a LAN port.
Exclude Select this option to exclude the packets that match the specified
criteria from this classifier.
TCP ACK Select this option to set this classifier for TCP ACK (acknowledgement)
packets.
Back Click Back to go to the previous screen.
Apply Click Apply to save your changes back to the IAD.
Cancel Click Cancel to begin configuring this screen afresh.
Table 53 QoS Class Configuration (continued)
LABEL DESCRIPTION