Type: MAJOR

Object ID1.3.6.1.4.1.2879.2.10.1.1.4.0.63

Description

The alarm indicates that malformed messages are dropped.

Repetition

The alarm is raised when the Malformed message timer expires. The timer starts when a malformed message is identified and the expiry value is 10 seconds.

No alarm is raised for malformed messages during the ten second interval.

Objects 

  • EVENT_SIPCM_MALFORMED_MESSAGES_DROPPED
  • sonusMalformedMessagesDropped,
  • sonusMalformedMessagesSourceIpAddr

Action

No clearing/resolution is required for the informational alarm.

As a preventive action the system admin can block the IP addresses received in the source IP address list.

Impact

The alarm indicates that malformed Messages are detected and dropped. This could imply a DoS attack depending on the count of messages received.

Clearing

None