Comtech EF Data SLM-5650A Installation And Operation Manual page 324

To prevent network failure, there should be no more than one Ethernet
connection to a single external switch at any time.
User access to M&C of the NP Interface via the built-in HTTP/HTTPS Interface or Telnet server
(port 23) is possible using the available RJ-45 connectors (Figure E-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 E.1.5), only the Base Modem's J5 Ethernet RJ-45 port
can be used for M&C.
Appendix E E–2
SLM-5650A Satellite Modem
Revision 10
MN-SLM-5650A