ICP DAS USA MSM-508FCS, MSM-508FT Recovery Time Setting, Recovery Time Cyber-Ring Protocol：

Industrial Ethernet Layer 2 Managed Switch – Web Management Manual

￿Recovery Time Setting

Recovery Time (Cyber-Ring Protocol)：

Recovery time is the duration of connections that from failure occurred to return to normal. This function allows you to assign the recovery time in millisecond (ms), the variable is from 100ms to 1500ms (1.5 sec).

Factory default is 300ms.

On Cyber-Ring Protocol Mode, user can specify the recovery time manually, and the Managed Switch will calculate adaptable Hello Time, Forward Time and Max age Time automatically.

An adequate recovery time is depended on how many Managed Switch are consisted in the Ring coupling, the more Managed Switch that you have, the more recovery time that you need.

If the recovery time is not longer enough, the Master LED will keep on flashing to make a warning.

Hello Time (STP Protocol)：

Hello time is the interval time that the Master Switch sends hello messages to Switch nodes on the Ring network, this is for making sure if the Switch nodes and the topology still keeping healthy.

This setting is only available on STP Mode. Factory default is 4000ms.

You can tune the time to be between 1000 and 10000 in millisecond (ms).

April 29, 2008 9