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Page 145
V.11.1
Protection switch N+1 by the Device Backup codec
After configuration the Device Backup codec remains checking periodically for
sanity of operation for all codecs defined to be monitored. The Web Browser
Control page for the Device Backup codec displays
<Device Backup Supervisor>
.
The Device Backup codec records also periodically the current configuration of
the monitored codecs. In case one codec drops out of service all those service
parameters are not lost.
Upon the defined performance threshold is undergone by one of the monitored
codec the Device Backup takes over the job. The Device Backup codec dials into
the far-end codec of the former communication.
It is remarked that the Device Backup codec keeps its IP address
37
even after a
protection switch took place. Therefore it is unlikely that any <ping> to the codec
out of service returns a successful acknowledge.
37
Due restrictions of most network gears (routers and Ethernet switches) it is not a recommended
policy to exchange the IP address and the MAC address for a short reaction time.
Содержание IP Family
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