The Carrida Discovery Client

Revision: 1.1
Date: 2018-02-05
Contact: support@carrida-technologies.com
Copyright: 2017-2018 Carrida Technologies GmbH, Ettlingen, Germany
Author: VC Support

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Table of Contents

1   Introduction

Carrida Discovery is a tool written for the Microsoft Windows Operating System to help you to locate your cameras in a network. It consists of a server and a client part. This document discusses the client part and is intended for OEM customers and end users.

Clients can send a multicast packet (see [1] [2]) to all cameras and receive an echo from every camera that was reached by it.

The propagation range of the multicast message can be extended by increasing the TTL (time-to-live) value.

2   User Interface

./images/client-empty.png

Scan

On startup of the client program, an empty table is displayed. To search for cameras, click the Scan button on the right side. This button sends the multicast message over the network. After a short while Scan the contacted cameras will appear in the table as shown in the next figure below:

./images/client.png

The table displays information specific to each Carrida camera

  • serial number (S/N),
  • model,
  • IPv4 and/or IPv6 address,
  • the last time the camera could be reached and
  • the status of the camera.

The IP address can be used to access the camera's configuration screens using a web browser. The status of the camera is at first always unknown. After an update, the state will either become 'Updated' or an error code.


Set Default Button

The multicast address defaults to 238.291.13.230 for IPv4 and to ff68::CADA for IPv6. If the address has been changed, it's always possible to go back to default by clicking Set Default (IPv4) for the IPv4 multicast address of Set Default (IPv6) for the default IPv6 multicast address.

Time to Live Parameter

Depending on the TTL [3] the multicast will be broadcast to other networks resp. subnetworks. The default value is 1, meaning that only cameras on the local network will receive the broadcast signal. Increase the TTL value to reach cameras in other (internal) networks.

Export List

To save the current list of cameras, click on Export List to dump all information about the cameras into a CSV [4] file. This file can be viewed in programs like Microsoft Excel or a normal text editor.

Credentials

To be able to update a camera, a username and a password are needed to provide access to the camera. Enter the username and the password in the fields on the right side and click on Set Credentials to save them.

Update Cameras

It is possible to update a few selected cameras or all cameras by pressing the Update Selected or Update All buttons. A file dialog will appear and ask for the update file.

3   References

[1]Administratively Scoped IP Multicast https://tools.ietf.org/html/rfc2365
[2]IPv6 Multicast Address https://tools.ietf.org/html/rfc2375
[3]Time to live (TTL) or hop limit determines through how many networks a package may travel. See https://tools.ietf.org/html/rfc791#page-14 and https://tools.ietf.org/html/rfc2460#section-8.2
[4]Comma-separated values https://en.wikipedia.org/wiki/Comma-separated_values