P-334U/P-335U User’s Guide

Table 64 Commonly Used Services

SERVICE

DESCRIPTION

 

 

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.

 

 

15.7 Default Bandwidth Management Classes and Priorities

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 65 Bandwidth Management Priority with Default Classes

CLASS TYPE

PRIORITY

 

 

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

 

 

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Chapter 15 Bandwidth Management