Avaya Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services Manual do Utilizador Página 43

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 192
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 42
SNMP, RMON, BootP, DHCP, and RARP Concepts
117362-A Rev. A 2-7
Thresholds
SNMP uses a management information base (MIB) to manage the router. The
MIB includes an extensive collection of statistics (MIB variables) that track the
router’s performance and provide early warnings of abnormal operating
conditions.
With the Site Manager threshold feature, you can configure the agent to
automatically notify you when specific statistics (or instances of the variable)
reach certain levels.
You can set a threshold for any integer, counter, gauge, or time-tick variable in the
MIB. Using the threshold parameters, you:
Select the polling interval, which specifies how often the agent checks the
statistic to see if its value has reached the threshold.
Set three threshold values (high, medium, and low).
Specify the threshold action as Lessthan or Greaterthan.
For information about setting thresholds, see “Configuring Thresholds” on
pa
ge 3-26.
When the statistic reaches the threshold, the agent generates an event. You specify
the severity level at which you want the manager to log the event. T
able 2-1 shows
the available severity levels and their suggested meanings. Depending on how you
configure the SNMP trap parameters (see “Configuring Traps on the Router” on
pa
ge 3-19), the agent may also send the threshold exception as an SNMP trap.
The Site Manager threshold feature is functionally similar to the RMON Alarm
and Event facility, except for some minor differences. The Site Manager threshold
feature provides three-tiered thresholds and defines a user-definable hysteresis
mechanism. The RMON Alarm and Event facility provides a two-tiered
proprietary thresholds system.
Threshold Example
Suppose you want SNMP to warn you if the number of high-priority (Priority
Level 1) packets queued for transmission is approaching the maximum number
supported by an interface. This maximum value is specified by the
wfCctOptsCngcCfgQp1Threshold MIB object. Using the threshold parameters,
you set a threshold for wfCctOptsCngcCfgQp1Threshold equal to 205.
Vista de página 42
1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 191 192

Comentários a estes Manuais

Sem comentários