Cdm-625/A, -750, -760, -700, -710, -710G Managed Switch Mode; Figure 1-5. Cdm-570L 1:1 Ip Redundancy Router Mode - 'B' Online (Switchover) - 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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- Installation and operation manual (154 pages) ,
- Installation and operation manual (176 pages)
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CRS-170A L-Band 1:1 Redundancy Switch
Introduction
Figure 1-5. CDM-570L 1:1 IP Redundancy Router Mode – 'B' Online (Switchover)
1.2.1.1.2
CDM-625/A, -750, -760, -700, -710, -710G Managed Switch Mode
A standard, user-provided Ethernet Layer 2 Switch is needed when a CDM-625/A, CDM-750,
CDM-760, CDM-700, CDM-710, or CDM-710G modem is configured for Managed Switch Mode
(also known as "Ethernet Bridge Mode") terrestrial traffic.
A Layer 2 Switch is designed to limit the traffic that egresses each port by only sending Ethernet
packets out the port that the destination network device is located. The switch maintains a
table, known as the dynamic Content-Addressable Memory (CAM) table that maps MAC
addresses to switch ports. When a packet arrives, in which an entry for that specific destination
MAC is unknown to the switch, it sends the packet out all ports and waits for response packets
in an attempt to identify which port that particular MAC resides. Once the device responds, the
switch is able to map the MAC to the port in the CAM table.
1–9
Revision 10
MN/CRS170A.IOM
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