The restoration time is up to two minutes when the extension mode is changed from no extension to extension for the LOM board. Why?
When the extension modes are inconsistent, the LOM board reports the link_Err alarm. In the case of the Brocade switch, when the extension modes are set as consistent, the service is still interrupted from two minutes and then restored. This is because the Brocade switch disables the laser for a period when detecting invalid received data.