Comtech EF Data CRS-170A - Manual (Page 117)

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM
Cables and Connections Revision 13
5–47
5.7.1.3.1.4 Modem-to-User IP (10/100 Ethernet) Interface Example
Figure 5-39 shows the block diagram and cabling example for a CDM-570L/AL 1:1 modem
configuration using the IP (10/100 Ethernet) Interface. This configuration requires no cabling kit
– you must use user-provided Ethernet cables and hub for direct connection to the ports.
For the CDM-570L/AL in Managed Switch (Ethernet Bridge) Mode, you MUST use an
external Ethernet hub to ensure that traffic will continue after a switchover. If an
Ethernet switch is used, there could be a several minute outage while the Ethernet
Switch “re-learns” the correct output Ethernet port. Using a “dumb” Ethernet hub
allows LAN to WAN traffic to continue even after a switchover occurs since both
modems will be receiving the LAN traffic.
CDM-570L/AL Block Diagram – IP (10/100 Ethernet) Interface
Figure 5-39. CDM-570L/AL IP (10/100 Ethernet) 1:1 Example