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

L-band 1:1 redundancy switch accessory product for use only with comtech ef data cdm-625/a, cdm-840, cdm-750, cdm-760, cdm-570l, cdm-700, cdm-710, cdm-710g, cdm-600l (clm-9600l), and sdm-300l3 modems
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CRS-170A L-Band 1:1 Redundancy Switch
Cables and Connections
4.5.4.4

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, you 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
4–35
Revision 10
MN/CRS170A.IOM

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