CANOGA PERKINS L351 10/100BASE Media Converter - Manual (Page 21)

EdgeAccess Universal Chassis System
L351 10/100BASE Media Converter 3-3
3.4.1 Remote Fault
If the Extension port Rx loses the signal, it sends a Remote Fault (RMTF) signal from its Tx, the Rx
LED is off, and an alarm flags the link loss on the Extension port. When the Extension port receives a
Remote Fault signal, the Rx LED lights red and an alarm flags the remote side optical link failure.
Both local and remote link partners must be configured to the same RMTF enable/disable setting.
RMTF complies with the IEEE802.3u Remote Fault standard.
Figure 3-1. Remote Fault Signal
3.4.2 Link Loss Forwarding
When Link Loss Forwarding (LLF) is enabled, a fault on one side of the L351 propagates to the other
side to notify that device and stops signal transmission (brings down the link). See Figure 3-2. Set the
LLF propagation to User to Extension, Extension to User, or both directions. Set this in the User
Interface or at SW3-2 (L) and SW3-3 (U). For details on setting SW3, see Chapter 2.
Figure 3-2. Link Loss Forwarding Propagation