KBC Networks ESML6-P3 User Manual

Page 28

Ethernet Switch User Manual

Manual_web_mgt_sw-ESML6-P3-Rev 1107

Page 27 of 51

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Check Loop Status

The Check Loop Status needs to be enabled to ensure that broadcast storms do not
occur. Set this to be either enabled or disabled and select . This setting will be
set to disabled by default or if there is a fault detected, if it is set to enabled then the
ring is checked automatically to ensure that a port that is mistakenly included in the ring
does not receive any DT-Ring packets. If the system finds a port has been mistakenly
added to the ring then the port will be blocked.

Fig 3-36 DT-Ring – Check Loop Status

DT-Ring:

For a simple ring network all the switches in one ring must be configured with the same
domain ID and domain name. Only one master can be set in the ring, it is responsible for
checking the loop status of the ring to determine whether its port status should be set as
either forwarding or blocking. The rest of the switches in the ring must be set as slaves
which listen to and forward loop messages and report any link failures to the master
switch.

ring

master

slave

Fig 3-38 DT-Ring Configuration