Omnitron Systems Technology GX-X User Manual

iConverter

Chassis

Backplane

GX/X Module

Internal

10/100/1000

switch chip

Fiber

1000 port

Fiber

1000 port

NMM Module

NMM front / back select

NMM UTP

10 port

4Tx Module

Internal 10/100

switch chip

4-port 10/100 UTP

Switch

“A” Link

“B” Link

A Port

B Port

A Port

B Port

A Port

B Port

Slot 1 (odd) Slot 2 (even) Slot 3 (odd)

GX/X User Manual

Port 1

Port 2

ABOUT THIS MANUAL

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:

1. Product enhancements now prevent unpredictable behavior under undefined or incompatible DIP-Switch selections.

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.

OVERVIEW

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.

iConverter GX/X regenerates, reshapes and re-times

The the fiber optic signal, and multiple GX/X converters can be cascaded to extend total network distances.

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The GX/X can be used as a standard two-port fiber converter. It can also use its two additional 10/100 backplane 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.

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.

Advanced Features

The GX/X features Port VLAN and T ag 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.

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.

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 NetOutlook

™

Management Software, or third-party

SNMP management software or Telnet. For information on using and configuring these advanced

features, please refer to the NetOutlook Management Software user manual.

GX/X MODEL NUMBER REFERENCE CHART

iConverter

Port 1

(Fiber Type /

Distance /

Wavelength)

MM / 220m /

/ 850nm

550m

MM / 220m /

/ 850nm

550m

SM / 12km /

1310nm

SM / 34km /

1310nm

SM / 34km /

1310nm

SM / 80km /

1550nm

MM / 220m /

/ 850nm

550m

MM / 220m /

550m

/ 850nm

Consult the factory for wide temperature (-40 to 60º C) and extended temperature (-40 to +75º C) models. When using single-fiber (SF) media converter models, the Tx wavelength on one end has to match the Rx wavelength on the other

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.

Port 2

(Fiber Type /

Distance /

Wavelength)

MM / 220m /

550m1 / 850nm

SM / 12km /

1310nm

SM / 12km /

1310nm

SM / 34km /

1310nm

SM / 80km /

1550nm

SM / 80km /

1550nm

SM / SF / 20km / Tx 1310nm,

1550nm

SM / SF / 20km / Tx 1550nm, Rx

1310nm

GX/X

Connector Types

SC MT-RJ LC

8542-00 8544-00 -

8543-10 - -

8543-11 8545-11 8547-11

8543-22 - 8547-22

8543-23 - -

8543-33 - 8547-33

8550-01 - -

8551-01 - -

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.

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.

GX/X APPLICATION EXAMPLE

Fig. 1 In-Band Managed GX/X Application

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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.

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.

For more information on individual chassis A and B backplane links, refer to the specific chassis’ user manual.

LINK MODES

In order to accommodate different user needs, the GX/X supports five different linking modes (see Fig. 2).

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)].

In Link Propagate (LP), a port transmits a Link signal only when receiving a Link at its other port. For example,

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the UTP transmits a Link only when receiving a Link at the fiber port [Fig. 2(c)].

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)].

In “Remote Fault Detection + Link Propagate” (RFD+LP) mode, a port transmits a Link signal only when both 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)].

NOTE: Connecting two converters with both acting in RF D mode is not supported and will cause a “deadly embrace” lockup.

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)].

NOTE: In older versions of firmware, RFD was not defined on ports set to Auto-Negotiation.

“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.

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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.

NOTE: Converters in SFD mode must be deployed in pairs, and the “LS” DIP-Switch position must also be selected.

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Fiber

(a)