Installation & Operation Manual 170 Document # LTRT-92224
Mediant 8000
EMS color-codes MOs according to their Severity attribute, using a similar logic as for
alarms. However it also takes into account the Operational State and Administrative
State of the MO. The MOs color-coding is described as follows:
Table
23-3: MO Severity Colors in the EMS
Administrative State Operational State Severity Color
Unlocked Enabled Clear Green
Unlocked Enabled Indeterminate White
Unlocked Enabled Warning Blue
Unlocked Enabled Minor Yellow
Unlocked Enabled Major Orange
Unlocked Enabled Critical Red
Unlocked Disabled - Dark Red
Locked - - Grey
You can view problems by identifying components in the EMS status screen that have
colors other than Grey or Green. When you select a specific component, the Alarm
Browser screen is updated to display Alarms and Events that are applicable for the
specific component (and all its sub-components) only. Therefore, you can use the
Alarm Browser screen to determine the problem that currently applies to the specific
component.
23.9.1 Alarm Throttling
In rare circumstances, a specific alarm may be continuously raised and cleared at a
high rate (e.g. PSTN alarm on a Trunk may be issued continuously when the Media
Gateway is not properly synchronized with the PSTN trunk). If such a scenario occurs,
the Media Gateway automatically suppresses alarms from the specific MO for a
certain period of time to prevent overload of the EMS of 3
rd
party SNMP managers
(e.g. NMS).
An Alarm Throttling Limit Exceeded alarm will be generated when alarm throttling is
activated.
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