Information Hierarchy - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Device Management
Information Type
Trap
Debugging message

3.2.2 Information Hierarchy

If too much information is generated, it is difficult to differentiate information about normal
operation and information about faults. Through information hierarchy, users do not need to
handle unwanted information.
Information has eight severities. The lower the severity level, the more severe the information.
Table 3-2
Table 3-2 Description of information severities
Value
0
1
2
3
4
5
Issue 01 (2014-11-30)
Description
Traps are notifications generated when the device detects faults.
Traps record system status information.
Different from logs, traps need to be notified to administrators
in a timely manner.
Debugging messages show internal operating information of the
system and help you trace the device running status.
Debugging messages are generated only after the debugging of
a module is enabled.
lists severities.
Severity Description
Emergencies A fault causes the device to fail to run normally unless it is
restarted. For example, the device restarts because of a program
exception or a fault about memory usage.
Alert A fault needs to be rectified immediately. For example, memory
usage of the system reaches the upper limit.
Critical A fault needs to be analyzed and processed. For example, the
memory usage falls below the lower threshold; BFD detects that
a device is unreachable.
Error An improper operation is performed or exceptions occur during
service processing. The fault does not affect services but needs
to be analyzed. For example, users enter incorrect commands or
passwords; error protocol packets are received.
Warning Some events or operations may affect device running or cause
service processing faults, which requires full attention. For
example, a routing process is disabled; BFD detects packet
loss; error protocol packets are detected.
Notification A key operation is performed to keep the device running
normally. For example, the shutdown command is run; a
neighbor is discovered; protocol status changes.
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3 Information Center Configuration
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