Avaya Configuring BOOTP Services Bedienungsanleitung PDF herunterladen (Seite 40)

Configuring SNMP, BootP, and DHCP Services

2-8

308644-15.1 Rev 00

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. Table 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

page 3-25

), the agent may also send the threshold exception as an SNMP trap.

The Site Manager threshold feature is functionally similar to the remote

monitoring (RMON) Alarm and Event facility, with 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 threshold system. For information about RMON,

RMON 2, and RMON alarms and events, see Configuring RMON and RMON2.

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.

You also set the polling interval to 20 seconds to indicate that, every 20 seconds,

the agent should check variables for which you have configured thresholds. You

set the threshold action to Greaterthan and set the threshold levels and severity of

events to the values shown in Table 2-2

When you add this threshold to the MIB, the agent polls the variable

wfCctOptsCngcCfgQp1Threshold every 20 seconds and responds as follows:

• If its value is greater than 102, but less than or equal to 153, the manager logs

an informational event indicating that the queue depth exceeded the low

threshold.

Table 2-2. Example of Threshold and Severity Settings

Threshold Level Low Medium High

Depth of Priority 1

transmit queue

102

(40% of capacity)

153

(60% of capacity)

205

(80% of capacity)

Severity of event INFO INFO WARNING

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 195 196

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