Keep-Alive Trap

acKeepAlive

Event

acKeepAlive

OID

1.3.6.1.4.1.5003.9.10.1.21.2.0.16

Description

Part of the NAT traversal mechanism. If the device's STUN application detects a NAT, this trap is sent on a regular time laps - 9/10 of the acSysSTUNBindingLifeTime object. The AdditionalInfo1 varbind has the MAC address of the device.

If the device is configured for SNMPv3, the trap is sent with acBoardTrapGlobalsAdditionalInfo2: SNMPVersion=SNMPv3. If the device is configured for SNMPv2, the trap is sent with acBoardTrapGlobalsAdditionalInfo2: SNMPVersion= SNMPv2c.

For HA-supporting products: If the device is also in High-Availability mode (HA) and the active and redundant devices are synchronized with one another, the trap is sent by the active device with the acBoardTrapGlobalsAdditionalInfo3 varbind, which contains the redundant device's serial number (S/N).

Note: Keep-alive is sent every 9/10 of the time configured by the [NatBindingDefaultTimeout] parameter.

Default Severity

Indeterminate

Event Type

other (0)

Probable Cause

other (0)

Trap Text

Keep alive trap

Condition

The STUN client is enabled and identified as a NAT device or doesn’t locate the STUN server. The ini file contains the following line ‘SendKeepAliveTrap=1’

Trap Status

Trap is sent