KTI Networks KGS-1064-HP, User Manual

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2.21 Multi Ring
For industrial applications, multiple switches are often connected like a cascaded chain due to topology
limitation. In such configuration, a backup (redundant) mechanism with fast response is often required to keep
the network operating when any cable fault or even device fault occur.
The switch is featured with Auto Multi-Ring Technology to support redundant ring connections. Basically, the
following functions are provides with AMR technology:
1. Up to five redundant rings can be supported concurrently.
2. The ring master switch monitors ring status continuously and controls a backup link.
3. As any fault detected, the ring master switch activates the backup link to operate with the fast response time
and make ring continue operation automatically.
4. The master switch continuously monitors ring health until faults are repaired. The backup link is set back to
standby state automatically when the ring is recovered from any faults and back to normal.
Configuration Definition
868B
Slave Units : All switch units except the master switch in a ring configuration.
869B
Master Unit : The switch unit which monitors the ring configuration and controls the backup link in
a ring. One ring port and one backup port are configured. In a multiple ring
configuration, a switch could be a master of one ring and slave unit of another ring.
870B
Ring Ports : The ports used for connecting switches in a ring.
871B
Backup Port : The port specified in the master unit which is connected to a physical cable but is
disabled in operation in standby state. It is enabled immediately by the master unit
when a fault is detected in a ring configuration.
872B
Ring Group ID: Each ring configuration must have a unique ID for identification when multiple rings
are configured in a network. A switch can support multiple rings concurrently.