Axis 0333-60X Axis Perimeter User Manual

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AXIS Perimeter Defender

Advanced conﬁguration

9999|192.168.1.40|0|ALARM_IN_PROGRESS|INTRUSION|Intrusion-0|-

Example

An ALARM_STOP message in XML format looks like this example:

<?xml version="1.0"?>

<KEENEO_MESSAGE xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:xsd="http://www.w3.org/2001/XMLSchema"

VERSION="5.0.0"

ID="9999"

TYPE="ALARM_STOP"

SENDER_IP="192.168.1.40"

SENDER_PORT="0">

<TYPE>INTRUSION</TYPE>

<SCENARIO_NAME>Intrusion-0</SCENARIO_NAME>

<EXTRA_DATA>zone=testzone</EXTRA_DATA>

<GUID>77acddf9-e0d4-402e-a497-231aeee22788</GUID>

</KEENEO_MESSAGE>

• The message header is the same as the previous messages.

• The message type is “ALARM_STOP”, and has the same set of subtypes of the ALARM_START message.

The corresponding ALARM_IN_PROGRESS message in TEXT format:

9999|192.168.1.40|0|ALARM_STOP|INTRUSION|Intrusion-0|2014-03-01T21:24:26.304

The TCP/IP connection is always closed after each message. Therefore, the recipient has to keep the listening socket always open

for being able to receive further notications.

Communication errors

If the remote recipient of XML notications is not reachable, for example because of a network disconnection, AXIS Perimeter Defender

starts buffering the non-delivered alarms internally and periodically (at least every 10 seconds) tries to deliver them again. After a

consecutive number of failures in delivering new messages (failures while trying to deliver again a message from the buffer does not

account for that), AXIS Perimeter Defender declares the recipient as “permanently ofine” and stops sending XML notications to

the recipient. The number of consecutive failures is xed to 20, roughly corresponding to 4 or 5 intrusion alarms of an average

duration of 40 seconds each. AXIS Perimeter Defender starts sending notications to the same recipient again if one of the following

events occurs:

• AXIS Perimeter Defender is restarted.

• The same value of the parameter “Alarm streaming url” is saved again.

Post-alarm time

AXIS Perimeter Defender implements the notion of “post-alarm time”. This is dened as the time interval after an alarm stops, during

which, if another alarm is triggered, both alarms are merged into a unique one.

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Axis 0333-60X Perimeter Defender Application