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4.21 Multi Ring Status
This figure shows an example that three redundant rings are configured and local Port 1/2, Port 3/4 and Port 5/6
connect Ring 2, Ring 3, and Ring 4 respectively. Port 7 and Port 8 connect RSTP network independently.
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Status
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Group #
Ring Status
Description
Ring entities
Status:
[ STANDBY ]– The ring is normal and with no failure. The backup link is under
standby and not activated.
[ BACKUP ] – Failure occurred somewhere on the ring and the master has
activated the backup link to support continuous operation of the ring. The ring failure
should be repaired immediately by the persons who are in charge.
[ Master Failed ] – Possible failure occurred on the master unit itself. No backup
support is available. This is a critical situation and should be repaired immediately.
[ Backup Port Failed ] – Possible failure occurred on the backup link. No backup
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