10/100 Ethernet Interface Example - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Cables and Connections
4.4.4.4

10/100 Ethernet Interface Example

Figure 4‐31 shows a block diagram and cabling example of a CDM‐570L 1:1 modem configuration
using the 10/100 Ethernet Interface. User‐provided Ethernet cables are connected directly to the
ports, so no cables or kit is required.
For the CDM‐570L in Managed Switch (Ethernet Bridge) Mode, the user MUST use an
external Ethernet hub to insure 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.
Figure 4-31. CDM-570L 10/100 Ethernet 1:1 Example
CDM-570L Block Diagram: 10/100 Ethernet Interface
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MN/CRS170A.IOM