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PROCESSOR (NP) INTERFACE
8.1
Introduction
The optional SLM-5650B's Network Processor (NP) Interface Module (also referred to as the "NP
Interface" or the "card"), shown in Figure 8-1, is Comtech EF Data's third generation IP router and
Ethernet bridge device. The NP Interface supports a number of primary operating modes:
Layer 2 Ethernet Bridge Mode
Layer 2 and Layer 3 SCPC Ethernet BPM (Bridge Point-to-Multipoint) Mode
Layer 3 SCPC IP Router Mode
The NP Interface is designed to process more than 150,000 packets per second (pps) in Layer 2,
Layer 3, or BPM mode of operation. It provides four RJ-45 connectors for user data, wired as
described in Table 8-1. The NP Interface also has a single RJ-11 console interface that is intended
only for factory-use initial interface configuration. The Maximum Ethernet Frame size for the modem
is 1518 bytes for all modes.
To prevent network failure, there should be no more than one Ethernet
connection to a single external switch at any time.
User access to management and control of the NP Interface via the built-in HTTP/HTTPS Interface
or Telnet server (port 23) is possible using the available RJ-45 connectors (see Figure 8-2) as
follows:
When in Router Mode, access is possible using any of the NP Interface RJ-45 Ports 1 through 4.
When in BPM Mode (see Section 8.5), only the base modem's J5 Ethernet RJ-45 port can be
used for management and control.
Network Processor (NP) Interface
Chapter 8. NETWORK
Figure 8-1. Network Processor (NP) Interface Module
8–1
SLM-5650B Satellite Modem
Revision 2
MN-SLM-5650B
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