Figure 1-7. Cdm-625/A, -750, -760, -700, -710, -710G 1:1 Ip Redundancy Managed Switch Mode - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Introduction
Figure 1-7. C DM-625/A, -750, -760, -700, -710, -710G 1: 1 IP R edundancy
As shown in Figure 1-7, in the event of a fault occurring on the Online Modem 'A', the following
will occur:
•
Modem 'A' goes Offline and disables its Ethernet data interface.
•
Simultaneously, Modem 'B' goes Online and enables its Ethernet data interface.
•
Layer 2 Switch 'A' senses that Port 4 is no longer active and clears the CAM table entries
for that port.
•
When the next Ethernet packet from Local PC 'A' destined for Remote PC 'B' arrives at
Switch 'A', there is no CAM entry for the PC 'B' MAC, so it will be broadcast to all active
ports.
•
When the next Ethernet packet from Remote PC 'B' arrives at Switch 'A', Switch 'A'
dynamically adds the PC 'B' MAC to the CAM table for Port 3.
Managed S witc h Mode – S witc hover
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