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XG2000 series User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2009
4.3 Link Pass Through
Link pass through is a function that monitors the status of a specified port link and notifies the device connected to the port via
link status notification of the link status of a monitored port by synchronizing the monitored port with the link status on the port.
This function allows the device to notify the port, after link status notification, of a link fault if detected at the monitored port.
Link pass through communicates the link fault status to the other port by sending a remote fault (RF) signal, as prescribed in
IEEE802.3ae LFS (Link Fault Signaling). When the link status of the monitored port is restored to normal, the other port is also
restored to normal, thereby restoring the network link.
To configure Link pass through, carry out the following procedure in the administrator EXEC mode.
Command Task
xg# configure terminal
Switch to global configuration mode.
xg(config)# link-pass-through { monitored-port
<1-20> | monitored-agg-port <1-10>}
[domino-port <1-20> [<1-20> ]]
[domino-agg-port <1-10> [<1-10> ]]
Set the relationship between the ports to be monitored
and ports link status notification were sent.
xg(config)# exit
Exit to administrator EXEC mode.