Paradise 205486 REV F - Manual (Page 123)

Operations Manual, HPA2, Compact Outdoor SSPA 208495 REV C 123
10.2 Ethernet Interface
10.2.1 Overview
The Compact Outdoor SSPA supports several IP network protocols to provide a full featured
remote M&C interface over an Ethernet LAN:
•
IPNet protocol – redirection of standard Teledyne Paradise Datacom LLC serial
protocol over UDP transport layer protocol. This protocol is fully supported in
Teledyne Paradise Datacom’s Universal M&C software.
•
SNMPv1 protocol - protocol intended for integration into large corporate NMS archi-
tectures.
In order to utilize either of the protocols listed above, the relevant interface option has to be
turned on. Refer to Section 10.2.2 IPNet interface and Section 10.2.4.5
Configuring SSPA
unit to work with SNMP protocol for details.
Of course, standard IP level functions such as ICMP Ping and ARP are supported as well.
There is currently no support for dynamic IP settings, all IP parameters.
10.2.2 IPNet Interface
10.2.2.1 General Concept
Satcom system integrators are recognizing the benefits of an Ethernet IP interface. These
benefits include:
•
Unsurpassed system integration capabilities;
•
Widely available, inexpensive support equipment (network cable; network hubs);
•
Ability to control equipment over Internet;
•
Ease of use
Implementation of the raw Ethernet interface is not practical due to the limitations it places on
M&C capabilities by the range of a particular LAN. It is more practical to use an Ethernet
interface in conjunction with the standard OSI (Open System Interconnect) model to carry a
stack of other protocols. In an OSI layered stack, an Ethernet interface can be represented as
a Data Link layer. All upper layers are resolved through a set of IP protocols. In order to keep
data bandwidth as low as possible (which is important when M&C functions are provided
through a low-bandwidth service channel) the IP/UDP protocol set is used as the Network/
Transport layer protocol on Teledyne Paradise Datacom SSPAs.
UDP (User Datagram Protocol) was chosen over TCP (Transmission Control Protocol)
because it is connectionless; that is, no end-to-end connection is made between the SSPA
unit and controlling workstation when datagrams (packets) are exchanged.
Teledyne Paradise Datacom provides a Windows
TM -based control application to establish
UDP-based Ethernet communication with the SSPA. The control application manages the ex-
change of datagrams to ensure error-free communication. An attractive benefit of UDP is that