User's Manual

B222s User’s Guide 145
CHAPTER 16
Logs
16.1 Overview
The web configurat or allows you to choose w hich cat egories of events and/ or alert s to have t he LTE
Device log and t hen display the logs or have t he LTE Device send t hem t o an adm inistrat or ( as e-
m ail) or t o a syslog server.
16.1.1 What You Can Do in this Chapter
• Use the Syst e m Log screen t o see the syst em logs for the cat egories t hat you select (
Section
16.2 on page 146
) .
• Use the Ph one Log screen t o view phone logs and alert m essages (
Section 16.3 on page 147) .
• Use The VoI P Call H ist or y screen t o view the det ails of t he calls perform ed on t he LTE Device
( Sect ion 16.4 on page 147) .
16.1.2 What You Need To Know
The following term s and concept s m ay help as you read this chapt er.
Alerts and Logs
An alert is a t ype of log t hat warrant s m ore serious at tent ion. They include syst em errors, att acks
( access control) and at tem pted access t o blocked web sites. Som e categories such as Syst em
Er r or s consist of bot h logs and alert s. You m ay different iat e t hem by t heir color in the Vie w Log
screen. Alert s display in red and logs display in black.
Syslog Overview
The syslog prot ocol allow s devices to send event not ification m essages across an I P net work t o
syslog servers t hat collect the event m essages. A syslog-enabled device can generat e a syslog
m essage and send it t o a syslog server.
Syslog is defined in RFC 3164. The RFC defines t he packet form at , cont ent and system log relat ed
inform ation of syslog m essages. Each syslog m essage has a facilit y and severit y level. The syslog
facilit y ident ifies a file in t he syslog server. Refer t o t he docum ent at ion of your syslog program for
det ails. The following t able describes t he syslog severity levels.
Table 58 Syslog Severit y Levels
CODE SEVERITY
0 Em ergency ( EMERG) : The system is unusable.
1 Alert ( ALERT): Act ion m ust be taken im m ediately.
2 Crit ical (CRI T) : The syst em condit ion is crit ical.