Lantech IES-3208C, User Manual

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6.17 G.8032 ERPS
ERPS specifies protection switching mechanisms and a protocol for Ethernet layer
network rings. Ethernet Rings can provide wide-area multipoint connectivity more
economically due to their reduced number of links. The mechanisms and protocol
defined in this recommendation achieve highly reliable and stable protection and never
form loops, which would fatally affect network operation and service availability.
6.18.1. Ring Mode

Auto
All switches will define its role if ITU Ring automatically. At beginning all switches
will be set
“none” under auto mode, after connecting all the ring ports, the switch
will set owner and neighbor automatically.

Basic
All options of ITU-Ring must be set manually.

Enhanced
This mode support both the
“node failure protection” and “miswiring detection”
but will decrease the performance of ITU-Ring, this mode is designed for
abnormal test.