ZyXEL Communications LTE5121, Руководство пользователя

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LTE-5121 User’s Guide
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1 8
System Monitor
18.1 Overview
Use the Traffic Status screens to view status and log information.
18.1.1 What You Can Do in this Chapter
• Use the LTE Status screen to view LTE status details ( Section 18.2 on page 188 ) .
• Use the System Log screen to see the system logs for the categories that you select ( Section
18.3 on page 190 ).
• Use the Phone Log screen to view phone logs and alert messages ( Section 18.4 on page 191 ).
• Use The VoIP Call History screen to view the details of the calls performed on the LTE Device
( Section 18.5 on page 192 ).
• Use the WAN screen to view the WAN traffic statistics ( Section 18.6 on page 192 ) .
• Use the LAN screen to view the LAN traffic statistics ( Section 18.7 on page 193 ).
• Use the NAT screen to view the NAT status of the LTE Device’s client(s) ( Section 18.8 on page
194 ).
• Use the VoIP Status screen to view the VoIP traffic statistics ( Section 18.9 on page 195 ).
18.1.2 What You Need To Know
The following terms and concepts may help as you read this chapter.
Alerts and Logs
An alert is a type of log that warrants more serious attention. They include system errors, attacks
(access control) and attempted access to blocked web sites. Some categories such as System
Errors consist of both logs and alerts. You may differentiate them by their color in the View Log
screen. Alerts display in red and logs display in black.
Syslog Overview
The syslog protocol allows devices to send event notification messages across an IP network to
syslog servers that collect the event messages. A syslog-enabled device can generate a syslog
message and send it to a syslog server.
Syslog is defined in RFC 3164. The RFC defines the packet format, content and system log related
information of syslog messages. Each syslog message has a facility and severity level. The syslog