ZyXEL p-334wh ユーザーガイド

P-334WH User’s Guide

156 

Chapter 15 Bandwidth Management

If you enable bandwidth management but do not configure a rule for critical traffic like VoIP, 
the voice traffic may then get delayed due to insufficient bandwidth. With the automatic traffic 
classifier feature activated, the ZyXEL Device automatically assigns a default bandwidth 
management class and priority to traffic that does not match any of the user-defined rules. The 
traffic is classified based on the traffic type. Real-time traffic always gets higher priority over 
other traffic. 

The following table shows you the priorities between the three default classes (AutoClass_H, 
AutoClass_M and Default Class) and user-defined rules. 6 is the highest priority.

Table 63   Bandwidth Management Priority with Default Classes

User-defined with high priority

6

AutoClass_H 

5

User-defined with medium priority

4

AutoClass_M

3

User-defined with low priority

2

Default Class

1

TELNET(TCP:23) 

Telnet is the login and terminal emulation protocol common on the 

Internet and in UNIX environments. It operates over TCP/IP 

networks. Its primary function is to allow users to log into remote host 

systems.

TFTP(UDP:69) 

Trivial File Transfer Protocol is an Internet file transfer protocol 

similar to FTP, but uses the UDP (User Datagram Protocol) rather 

than TCP (Transmission Control Protocol).

VDOLIVE(TCP:7000) 

Another videoconferencing solution.

Table 62   Commonly Used Services