Link Fault Pass-Through (IEX series only)
If the Ethernet or DSL connection is down, the device will not be notified that the connection has been
terminated. The device will continue to transmit packets and wait idly for a response that never arrives—and
the longer the wait, the higher the possibility that packets will be lost.
With link fault pass through (LFP), a troubleshooting function that drastically reduces the waiting time, enables
Moxa IEX products to force a link down status to prevent data loss.
Ethernet Link-Down Mode
If either the CO or CPE Ethernet port link is down, the IEX will disable the corresponding Ethernet connection
so that data can no longer be sent but keeps the DSL connection alive. As a result, data loss is minimized with
the topology change notice based on redundancy protocol issued by connected MOXA Ethernet Switches. Once
the Ethernet link is up again, the IEX will try to fast recover the connection without DSL re-training. The system
logs will record link up/down events.
DSL Link-Down Mode
When the DSL connection is down, the IEX will immediately disable both CO and CPE Ethernet connections to
avoid packets being sent through the failed path. The IEX will try to reestablish the Ethernet link when the DSL
connection is stable again. The system logs will record link up/down events.
Network Parameters
Network configuration allows users to configure both IPv4 and IPv6 parameters for management access over
the network. The Moxa switch supports both IPv4 and IPv6, and can be managed through either of these
address types.
A brief explanation of each configuration item is given below.
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