RC-E User Manual
Management Client (RC-E Manager)
What Are the Requirements?
In order to use multicasting, your network infrastructure must support IGMP (Internet Group Management Protocol, an
IP multicasting standard).
Furthermore, multicasting must be configured through the Management Client.
Enabling Multicasting
On the
Multicast
tab, select the
Live multicast
check box.
If the entire IP address range for multicast is already in use on one or more other recording servers, you cannot
enable multicasting on further recording servers without freeing up some multicasting IP addresses first.
Assigning IP Address Range
In this section you specify the range from which you want to assign addresses for multicast streams from the selected
recording server. Clients will connect to these addresses when viewing multicast video from the recording server in
question.
IP address:
In the
Start
field, specify the first IP address in the required range. Then specify the last IP address
in the range in the
End
field. For more info, see the following.
Port
: In the
Start
field, specify the first port number in the required range. Then specify the last port number in the
range in the
End
field.
Source IP address for all multicast streams
: If a recording server has more than one network interface card, it
is only possible to multicast on one of them. This field is therefore relevant if your recording server has more than
one network interface card—or if it has a network interface card with more than one IP address.
To use the recording server's default interface, leave the value 0.0.0.0 (IPv4) or :: (IPv6) in the field. If you
want to use another network interface card, or a different IP address on the same network interface card,
specify the IP address of the required interface.
Specifying Datagram Options
In this section you specify settings for data packets (datagrams) transmitted through multicasting.
MTU
: Maximum Transmission Unit, the largest allowed physical data packet size (measured in bytes). Messages
larger than the specified MTU will be split into smaller packets before being sent. Default value is 1500, which is
also the default on most Windows computers and Ethernet networks.
TTL
: Time To Live, the largest allowed number of hops a data packet should be able to travel before it is
discarded or returned. A hop is a point between two network devices, typically a router. Default value is 128.
Enabling Multicasting for Individual Cameras
Even when you have specified multicasting settings for the selected recording server, multicasting will not work until
you enable it for required cameras:
Select the required recording server in the Management Client's Site Navigation pane (see "Panes Overview" on page
36), select the required camera in the overview pane (see "Panes Overview" on page 36), then select
Live multicast
on the Client tab (see "Client Tab (Camera Properties)" on page 76) in the properties pane (see "Panes Overview" on
page 36). Repeat for all required cameras under the recording server in question.
On-Net Surveillance Systems, Inc.
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