Troubleshooting Features - IMC Networks iMcV-LIM 10/100 Operation Manual

Selective Advertising is a mode in which the speed and duplex for the copper and the
fiber are specifically advertised. This mode is available when DSW 1-4 are set to OFF.
Dip Feature
Switch
S1 LFD
S2 PNP (AN)
S3 FORCE
S4 10/100

Troubleshooting Features

The iMcV-LIM 10/100 media converters include two advanced troubleshooting
features to help locate "silent failures" on the network.
•
Transparency
•
Link Fault Detection (LFD)
Transparency
Transparency is only available in PNP mode. Transparency treats the connection
between the two end devices as if there were no media converters installed. In a
typical application where two media converters are installed between two copper-
based switches, the twisted pair cables as well as the fiber cable are seen as one
entity. If a fault occurs on any segment between the two end devices, link LEDs on
the end devices will go out. This prevents any failure on the link between the end
units from going undetected.
As stated, transparency is available when iMcV-LIM 10/100 is operating in PNP (AN)
mode:
•
S2 PNP (AN) must be ON
•
S1 (LFD), S3 (Force) and S4 (10 or 100) must be OFF
Selective PNP
Advertising (AN)
OFF OFF
OFF ON
OFF OFF
OFF OFF
4
Force Force Force
100 10 100 LFD
OFF OFF ON
OFF OFF OFF
ON ON ON
OFF ON OFF
Force
10 LFD
ON
OFF
ON
ON