CANOGA PERKINS 9160 10 Gigabit Ethernet Network Interface Device - Manual (Page 14)

2-4 9160 10 Gigabit Ethernet Network Interface Device
Remote Fault
The 9160 supports Remote Fault (RMTF) on all MP and SP optical ports with speeds greater than
10 Mbps; it is not supported for the 10G XFP or UTP ports.
To use RMTF on a specific port, you must first enable it on both the local port and the remote device,
and then set that port speed to Auto-negotiation. To set RMTF and the port speed in software, see
page 3-17.
If RMTF is enabled on a port and that port Rx loses the signal, it sends an RMTF signal from its Tx,
the Rx LED is off, and an alarm flags the link loss on the Extension port; see Figure 2. When the
Extension port receives a Remote Fault signal, the Rx LED lights red and an alarm flags the remote
side optical link failure. RMTF complies with the IEEE802.3u Remote Fault standard.
Usr
Prt
Ext
Prt Usr
Prt
Ext
Prt
Rx
Rx Tx
Tx Rx
Rx Tx
Tx
RMTF
Local Device Remote Device
• Tx transmits RMTF to remote device
• Local device Rx turns OFF
• Local device Rx detects link loss
• Remote device Rx lights red
Figure 2. Remote Fault Signal