ZyXEL Communications Corporation P873HNUP51B Manuel D’Utilisation

 Chapter 4 Tutorials

P-873HNUP-51B User’s Guide

Select the interface that is in use. 

Select Enable in the Use Gateway IP Address field. Type 192.168.1.253 (R’s N1 address) 

in the Gateway IP Address field.

Click Apply.

Now B should be able to receive traffic from A. You may need to additionally configure B’s firewall 
settings to allow specific traffic to pass through.

This section contains tutorials on how you can configure the QoS screen.

Let’s say you are a team leader of a small sales branch office. You want to prioritize e-mail traffic 
because your task includes sending urgent updates to clients at least twice every hour. You also 
upload data files (such as logs and e-mail archives) to the FTP server throughout the day. Your 
colleagues use the Internet for research, as well as chat applications for communicating with other 
branch offices.

In the following figure, your Internet connection has an upstream transmission bandwidth of 
10,000 kbps. For this example, you want to configure QoS so that e-mail traffic gets the highest 
priority with at least 5,000 kbps. You can do the following:

• Configure a queue to assign the highest priority queue (1) to e-mail traffic going to the WAN 

interface, so that e-mail traffic would not get delayed when there is network congestion. 

• Note the IP address (192.168.1.23 for example) and/or MAC address (AA:FF:AA:FF:AA:FF for 

example) of your computer and map it to queue 7.