Comtech EF Data DTMX5000 SpectraCast - Manual (Page 72)

Operation DTMX5000 IP Gateway
Rev. 1 3–36
Multicast user addresses can be registered with the unit via the terminal or the NMS.
Then, when a packet is sent to a registered multicast user address, it is forwarded using
the QoS parameters defined specifically for that multicast user.
Each multicast user is assigned to one of the 15 SIDs (Service Ids) which are reserved
for multicast transmissions. A SID is indexed to a set of odd and even keys used for data
decryption, thus providing access to different kinds of information. The Gateway uses a
double-buffering system in which these keys are continuously changed.
Multicast users are managed using the Multicast Users Manipulation option of the
Maintenance parameters. For each multicast user, the IP address is specified and the
multicast user is included in a group. In addition, QoS parameters are defined and the
SID key to be used for decryption information is specified.
The Multicast Users Manipulations Options consists of the following:
•
Show/Edit Multicast Users
•
Find Multicast User
•
Add Multicast User
•
Delete Multicast User
•
Write to MULTICAST.INI File