ZyXEL Communications 3.1 User Manual

ZyWALL (ZLD) CLI Reference Guide

This chapter provides information about the ZyWALL’s logs. 

Note: When the system log reaches the maximum number of log messages, new log 

messages automatically overwrite existing log messages, starting with the oldest 

existing log message first.

See the User’s Guide for the maximum number of system log messages in the ZyWALL.

The following table describes the values required for many log commands. Other values are 
discussed with the corresponding commands.

The following sections list the logging commands.

Input Values for Log Commands

The name of the interface.

Ethernet interface: For the ZyWALL USG 300 and above, use gex, x = 1 - N, where N 
equals the highest numbered Ethernet interface for your ZyWALL model.

The ZyWALL USG 200 and lower models use a name such as wan1, wan2, opt, lan1, 

ext-wlan, or dmz.

Virtual interface on top of Ethernet interface: add a colon (:) and the number of the virtual 
interface. For example: gex:y, x = 1 - N, y = 1 - 4

VLAN interface: vlanx, x = 0 - 4094

Virtual interface on top of VLAN interface: vlanx:y, x = 0 - 4094, y = 1 - 12

Bridge interface: brx, x = 0 - N, where N depends on the number of bridge interfaces your 
ZyWALL model supports.

Virtual interface on top of bridge interface: brx:y, x = the number of the bridge interface, y 
= 1 - 4

PPPoE/PPTP interface: pppx, x = 0 - N, where N depends on the number of PPPoE/PPTP 
interfaces your ZyWALL model supports.

The name of the category; kernel, syslog, .... The default category includes debugging 
messages generated by open source software. The 

all

 category includes all messages in 

all categories.

The name of a protocol such as TCP, UDP, ICMP.