Comtech EF Data CDM-625A Installation And Operation Manual page 655

CDM-625A Advanced Satellite Modem
Appendix K
K.3 Ethernet Network Configurations in Managed Switch Mode
K.3.1 Point-to-Multipoint Hub-to-Remotes, Split-path Traffic Using Routers
Figure K-8 shows hub-to-remotes configuration using routers with standard and split-path
Ethernet traffic. A Static ARP Entry is needed in the switch so that routing of the Tx side of the
modems will be on the correct port of the router. For example, the Rx side of the Ethernet
connection for 'Traffic Modem #N' comes in the bottom port of the Router, but the Tx Ethernet
connection must be connected through the same port as 'Traffic Modem #1', as shown in this
figure.
Figure K-8. Point-to-Multipoint Using Routers
K–7
MN-CDM625A
Revision 4