Omnitron Systems Technology Switch GX X User Manual

The GX/X can be used as a standard two-port fiber  
converter. Itcanalsouseitstwoadditional10/100backplane  
ports to connect to adjacent modules and accommodate  
flexible network configurations like In-Band management  
and multi-module configurations. The iConverter 19-Module,  
5-Module or 2-Module Chassis have backplanes that  
facilitate connectivity between adjacent modules.  
GX/X MODEL NUMBER REFERENCE CHART  
PORT STRUCTURE  
Using a 4-port switch design, the GX/X features two  
front-plane 1000Mbps fiber ports (Port 1 is the top port,  
and Port 2 is the lower port nearest the thumb screw).  
It also features two 10/100 Ethernet backplane ports  
(“A” and “B”) that can connect to adjacent modules  
within the same chassis.  
iConverter GX/X  
Port 1  
(Fiber Type /  
Distance /  
Port 2  
iConverter® GX/X User Manual  
Connector Types  
MT-RJ  
(Fiber Type /  
Distance /  
Wavelength)  
SC  
LC  
Wavelength)  
Port 1  
MM / 220m /  
MM / 220m /  
8542-00  
8544-00  
-
550m1 / 850nm 550m1 / 850nm  
The GX/X can be used in an unmanaged or managed  
fashion. When unmanaged, it can be installed in a chassis  
without a management module and can be configured by  
using two onboard DIP-Switches. To be managed, a  
Network Management Module (NMM) or an iConverter  
module with built-in management (such as a GX/TM or  
10/100M) must be installed in the same chassis.  
When the GX/X “A” and “B” Ethernet backplane ports are  
enabled (using the “BPAEN” and “BPBEN” DIP-Switches),  
they connect via the backplane of the chassis to the  
slots on the left and right sides of the GX/X module.  
When another switch-based module with backplane port  
connections such as a second GX/X or an NMM is installed  
in an adjacent slot, it can be connected via the backplane  
to the GX/X to facilitate a multi-module configuration.  
Port 2  
MM / 220m /  
SM / 12km /  
1310nm  
8543-10  
8543-11  
8543-22  
8543-23  
8543-33  
-
-
550m1 / 850nm  
SM / 12km /  
1310nm  
SM / 12km /  
1310nm  
8545-11  
8547-11  
8547-22  
-
ABOUT THIS MANUAL  
SM / 34km /  
1310nm  
SM / 34km /  
1310nm  
-
-
-
This document supports revision “xx/10” of the GX/X.  
Please refer to the serial number label on the GX/X for  
the revision number of your product. This revision  
incorporates the following improvements to the GX/X:  
SM / 34km /  
1310nm  
SM / 80km /  
1550nm  
Advanced Features  
SM / 80km /  
1550nm  
SM / 80km /  
1550nm  
The GX/X features Port VLAN and Tag VLAN, which allow  
control of traffic flow among the fiber ports and chassis  
backplane ports. It also features Port Access Control,  
which facilitates enabling and disabling of individual ports.  
GX/X APPLICATION EXAMPLE  
8547-33  
1. Product enhancements now prevent unpredictable  
behavior under undefined or incompatible DIP-Switch  
selections.  
Slot 1 (odd)  
Slot 2 (even)  
Slot 3 (odd)  
“B” Link  
SM / SF / 20km  
/ Tx 1310nm, Rx  
1550nm  
Chassis  
Backplane  
MM / 220m /  
“A” Link  
8550-01  
8551-01  
-
-
-
-
550m1 / 850nm  
A Port  
A Port  
A Port  
B Port  
B Port  
B Port  
2. LINK MODES have been increased to include RFD+LS  
and RFD+LP modes. Improvements to LED behavior  
have been made to accommodate these new link modes.  
SM / SF / 20km  
/ Tx 1550nm, Rx  
1310nm  
The GX/X supports reporting of MIB statistics. Statistics  
are available for 32 variables per port, reporting a wide  
range of real-time packet statistics to provide  
performance and operational monitoring.  
MM / 220m /  
550m1 / 850nm  
NMM  
Consult the factory for wide temperature (-40 to 60º C) and extended  
temperature (-40 to +75º C) models.  
Internal  
10/100/1000  
switch chip  
Internal  
10/100  
switch chip  
front /  
back  
select  
OVERVIEW  
When using single-fiber (SF) media converter models, the Tx  
wavelength on one end has to match the Rx wavelength on the other  
1 62.5/125µm, 100/140µm multimode fiber up to 220m. 50/125µm  
multimode fiber up to 550m. Refer to the fiber cable manufacturer for  
multimode distance specifications.  
The iConverter GX/X manageable two-port Gigabit  
Ethernet switch and media converter is a member of  
the modular iConverter product family. It provides  
fiber-to-fiber conversion for extending network distances  
and connecting dissimilar fiber network connections.  
The iConverter GX/X regenerates, reshapes and re-times  
the fiber optic signal, and multiple GX/X converters can  
be cascaded to extend total network distances.  
NOTE: Using the advanced features listed above  
requires the use of an NMM or an iConverter module  
with built-in management (such as a GX/TM or 10/100M)  
and NetOutlookManagement Software, or third-party  
SNMP management software or Telnet.  
NMM UTP  
10 port  
Fiber  
1000 port  
Fiber  
1000 port  
4-port 10/100 UTP  
Switch  
4Tx Module  
NMM Module  
GX/X Module  
Fig. 1 In-Band Managed GX/X Application  
For information on using and configuring these advanced  
features, please refer to the NetOutlook Management  
Software user manual.  
Page 4  
Page 1  
Page 2  
Page 3  
LS  
LS  
Fig. 1 depicts a chassis with three modules plugged into  
three of its adjacent backplane slots (beginning with an  
odd-numbered slot). The adjacent slots are connected  
via the backplane using the “A” and “B” 10/100 links. In  
this example, the module on the left is a Network  
Management Module (NMM) connecting via its A  
backplane port to the GX/X, facilitating “In-Band”  
management (via the fiber uplink). The module on the  
right is a 4-port 10/100 switch module (4Tx) connecting  
via its B link port to the GX/X, facilitating a 4-port 10/100  
Ethernet switch with a fiber uplink configuration. This  
3-module configuration provides an effective 4-port  
10/100 managed switch with a gigabit fiber uplink and a  
fiber link to another iConverter chassis configuration in a  
daisy chain.  
the UTP transmits a Link only when receiving a Link at  
the fiber port [Fig. 2(c)].  
Connecting two converters which are both set to SFD is  
permitted and facilitates a dual-loop-back feature where  
P1 fiber faults can be reported to both ends of the network.  
Fiber  
Fiber  
Fiber  
Fiber  
(a)  
In Remote Fault Detection + Link Segment (RFD+LS),  
the fiber port transmits a Link signal only when receiving  
a Link at the fiber port. As a result, fiber faults (no Link  
received at the fiber) are looped-back and can be  
reported to the network core [Fig. 2(d)].  
NOTE: Converters in SFD mode must be deployed in pairs,  
and the “LS” DIP-Switch position must also be selected.  
Switch 1 Converter A  
LS  
Converter B Switch 2  
LS  
(b)  
In “Remote Fault Detection + Link Propagate” (RFD+LP)  
mode, a port transmits a Link signal only when both  
Switch 1 Converter A  
LP  
Converter B Switch 2  
LP  
itself and the other port are receiving Link signals.  
A
loss of a received Link signal at a port is “Looped-back”  
and the port stops transmitting a Link signal. The same  
loss of Link is propagated to the other port which also  
stops transmitting the Link signal. For example, the  
loss of Link into P2 causes both P1 and P2 ports to stop  
transmission of the Link signal [Fig. 2(e)].  
(c)  
Switch 1 Converter A  
LP  
Converter B Switch 2  
RFD+LS  
This example shows how the GX/X can be used either as a  
traditional managed or unmanaged media converter or as  
a building block to create flexible and effective network  
switch configurations.  
(d)  
NOTE: Connecting two converters with both acting in RFD  
mode is not supported and will cause a “deadly embrace”  
lockup.  
Switch 1 Converter A  
LP  
Converter B Switch 2  
RFD+LP  
For more information on individual chassis A and B  
backplane links, refer to the specific chassis’ user manual.  
When the fiber is set to Auto-Negotiation Mode, the  
device receiving the fault acts as if it is in RFD mode  
[Fig. 2(d), (e) and (f)].  
(e)  
LINK MODES  
Switch 1 Converter A  
SFD  
Converter B Switch 2  
SFD  
NOTE: In older versions of firmware, RFD was not  
defined on ports set to Auto-Negotiation.  
In order to accommodate different user needs, the GX/X  
supports five different linking modes (see Fig. 2).  
“Symmetrical Fault Detection” (SFD) mode operates  
similarly to the Remote Fault Detection (RFD) mode.  
In SFD mode, the loss of a received Link at P1 is  
Looped-Back to P1 and propagated to P2, causing both  
to stop transmitting the Link signal [Fig. 2(f)] and also  
causing blinking in a connected GX/X P1 “Link” LED  
indicator.  
(f)  
In Link Segment (LS), a port transmits a Link signal  
independently of any received Link at any other port.  
For example, the UTP transmits a Link regardless of  
the fiber receiving a Link [Fig. 2(a) & (b)].  
Switch 1 Converter A  
LED Lit LED Blinking  
LED Status depends on connected device  
Converter B Switch 2  
LED Off  
LED Status (Blinking/off) depends on connected device  
In Link Propagate (LP), a port transmits a Link signal  
only when receiving a Link at its other port. For example,  
Fig. 2 GX/X Link Modes  
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