2
Installing an iMcV-LIM 10/100
The iMcV Modules install in B&B Electronics’ SNMP manageable iMediaChassis series
or in any MediaChassis.
NOTE
All modules are hot-swappable.
To install an iMcV Modules:
1.
Remove the blank bracket covering the slot where the module is to be installed
by removing the screws on the outside edges of the bracket.
2.
Slide the iMcV Modules into the chassis, via the cardguides, until the module is
seated securely in the connector.
3.
Secure the module to the chassis by tightening the captive screw.
4.
Save any “blanks” removed during installation for future use if the configuration
requirements change.
Managed Modules
To manage one or more iMcV-LIM 10/100, an SNMP agent must be present in the
chassis. To configure Managed Modules, install the module first, and then configure
using the management software. If using management software, software will
override hardware DIP Switch settings.
Unmanaged Modules
Before installing, configure the iMcV-LIM 10/100modules for desired features. Refer
to table which indicates the available features and settings for the iMcV-LIM 10/100
modules.
Dip
Switch
Feature
Function
Default
S1
LFD
Link fault detection available in forced mode only
(S3 is ON)
OFF
S2
PNP
(AN)
Auto Negotiation mode (plug-n-play) available when
forced mode is disabled (S3 is OFF)
ON
S3
Force
Force mode forces the module to operate at 10 or
100 Mbps as determined by S4
OFF
S4
10/100
When ON, operates at 10 Mbps.
When OFF, operates at 100 Mbps.
Available when forced mode is enabled (S3 is ON)
OFF
Remaining DIP Switches are factory configured—DO NOT CHANGE
3
Modes of Operation
The iMcV-LIM 10/100 has four modes of operation:
PNP (Auto Negotiation)
FORCE 10Mbps
FORCE 100Mbps
Selective Advertising AN (All OFF)
NOTE
The iMcV-LIM 10/100 cannot be set for Half- or Full-Duplex manually. Duplex is determined
by the link partners connected to the iMcV-LIM 10/100.
The iMcV-LIM 10/100 media converter is typically installed in pairs and provides
compatibility with legacy 10BASE-FL devices, while also providing support for
100Mbps devices. This is a PHY based device to allow very low propagation delays
but in turn the speed and duplex of both its copper and fiber ports must be the same.
For the iMcV-LIM 10/100 to function properly, the copper port must have link before
the fiber port will link up.
In a back to back configuration, both units must have the Plug-N-Play
PNP (AN)
switch set to ON for the copper ports to auto negotiate from end to end. In this
mode the fiber link becomes transparent allowing the units at both ends of the link to
function as if they were connected over one copper line. All auto negotiation
signaling is the result of signaling received on the ports of the unit. Only use this
mode with two iMcV-LIM 10/100 media converters installed as a pair.
With all switches set to OFF
,
the unit sends its own
Selective Advertising (AN)
signaling on the copper port. This advertises both FDX and HDX with the physical
speed that is detected on the fiber line. This signaling cannot occur until this fiber
port is active. If auto negotiation signaling is also received over the fiber from the far
end equipment, the auto negotiation signaling on the copper port will include this
information.
In all of the
FORCE modes
, no auto negotiation signals are sent or acted on. The unit
will blindly send the speed assigned and supports either FDX or HDX data. The LFD
function is only available in the FORCE modes.
