iConverter® GX/T User Manual
Port 1 (P1)
Port 2 (P2)
iConverter GX/T Dual Fiber Modules
Fiber | | Distance | | Connector Type |
| | | | | | | | |
Type | | | SC | | MT-RJ | | LC |
| | | | | |
| | | | | | |
| | | | | | | | |
MM | 220m / 550m1 | 8522-0 | | 8524-0 | 8526-0 |
SM | | | 12 km | 8523-1 | | 8525-1 | | 8527-1 |
SM | | | 34 km | 8523-2 | | | - | | | 8527-2 |
| | | | | | | | | | | |
SM | | | 80 km | 8523-3 | | | - | | | 8527-3 |
iConverter GX/T Single-Fiber Modules |
| | | | | | | | | | |
Fiber / | | | | Tx: 1310nm, | | Tx: 1550nm, |
Connector | | Distance | | |
Type | | | | Rx: 1550nm | | Rx: 1310nm |
| | | | | | | | | |
| | | | | | | | |
SM / SC | | 20 km | | 8530-1 | | | | 8531-1 |
SM / SC | | 40 km | | 8530-2 | | | | 8531-2 |
For wide temperature (-40 to 60º C), add a "W" to the end of the model number. Consult factory for extended temperature (-40 to 75º C) models.
LINK MODES
In order to accommodate different user needs, the GX/T 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, 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), the UTP port transmits a Link signal only when receiving a Link at the fiber port. The fiber port transmits a Link signal only when receiving Link signals at both the fiber port and the UTP port. As a result, fiber faults (no Link received at the fiber) are propagated forward and looped back for fault reporting at both the network core and the customer location [Fig. 2(e)].
NOTE: Connecting two converters with both set to RFD mode is not supported and will cause a “deadly embrace” lockup.
OVERVIEW
The iConverter GX/T provides 10/100/1000BASE-T UTP to 1000BASE-X Fiber conversion as well as rate conversion between 10BASE-T, 100BASE-TX, 1000BASE-T and 1000BASE-SX/LX. Models are available for multimode (MM) and single-mode (SM) dual fiber, and single-mode single-fiber (SF).
The GX/T UTP port supports Half-Duplex and Full- Duplex modes and features an automatic crossover mode for easy attachment to hubs, switches and workstations.
The GX/T can be used as a standard two-port UTP to fiber converter. It can also use its two additional 10/100 backplane ports to connect to adjacent modules and accommodate flexible network configurations. The iConverter 19-Module, 5-Module or 2-Module Chassis have backplanes that facilitate connectivity between adjacent modules.
The GX/T can be used in a managed or unmanaged application. When managed, it must be installed in a chassis with an iConverter Network Management Module (NMM), GX/TM or 10/100M.
ADVANCED FEATURES
The GX/T features Port VLAN and Tag VLAN, which allow complete control of traffic flow between the front-plane UTP port, the fiber port and the chassis backplane ports. The GX/T also features Port Access Control, which facilitates enabling and disabling of individual ports. It also supports reporting of MIB statistics.
Page 2
(a) | UTP | | | UTP |
| | | Fiber | | |
Switch 1 | Converter A | Converter B | Switch 2 |
| | LS | LS | | |
(b) | | | | | |
Switch 1 | Converter A | Converter B | Switch 2 |
| | LP | LP | | |
(c) | | | | | |
Switch 1 | Converter A | Converter B | Switch 2 |
| | LP | RFD+LS | |
(d) | | | | | |
Switch 1 | Converter A | Converter B | Switch 2 |
| | LP | RFD+LP | |
(e) | | | | | |
Switch 1 | Converter A | Converter B | Switch 2 |
| | SFD | SFD | | |
(f) | | | | | |
Switch 1 | Converter A | Converter B | Switch 2 |
LED Lit | LED Blinking | LED Off |
LED Status depends on connected device
Fig. 2 GX/T Link Modes
NOTE: Using the advanced features listed above requires the use of the Network Management Module (NMM) and the NetOutlook™ Management Software (or third-party SNMP management software) or Telnet.
For more information on using and configuring these advanced features, please refer to the NetOutlook Management Software user manual.
PORT STRUCTURE
Using a 4-port switch design, the GX/T features two front-plane ports (1000Mbps fiber Port 1 and a 10/100/1000 UTP Port 2) and two 10/100 Ethernet backplane ports (A and B) that can connect to adjacent modules within the same chassis.
When the GX/T backplane A and B ports are enabled (using “BPAEN” and “BPBEN” DIP-Switches), they connect via the chassis backplane to the slots on the left and right sides of the GX/T module. When another switch-based module with backplane port connections (such as a second GX/T or an NMM) is installed in an adjacent slot, it can be connected via the backplane to the GX/T to facilitate a multi-module configuration.
GX/T Application Example:
Fig. 1 depicts a chassis with three modules plugged into three 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 GX/T in the center slot connects to the slot on its left using the A link and the slot on its right using the B link.
Page 3
In Symmetrical Fault Detection (SFD), the UTP port transmits a Link signal only when receiving a Link at the fiber port. The fiber port transmits a Link signal only when receiving a Link signal at both the fiber port and the UTP port. As a result, fiber faults (no Link received at the fiber) are looped back and can be reported to the network core. In addition, connecting two back-to-back converters which are both set to SFD facilitates dual-loop-back, where fiber faults are reported to both ends of the network. A blinking fiber link LED on a converter indicates a fault of the transmit fiber or UTP cables of that converter [Fig. 3(f)].
NOTE: Converters in SFD mode must be deployed in pairs.
Fiber set to Auto-Negotiation Mode
When the Fiber is set to Auto-Negotiation Mode, the device receiving the fault acts as if it is in RFD mode. Link Segment, Link Propagate and Symmetrical Fault Detection modes operate in the same manner (refer to Fig. 2(d), (e) and (f).
NOTE: “Remote Fault Detection” (RFD) is not a valid mode when the fiber is set to Auto-Negotiation. The user should select LS, LP or SFD instead.
DIP-SWITCH SETTINGS
Front Panel DIP-Switch Settings
Link Segment | = | LS | | LP = | Link Propagate |
|
| | Off | | RFD = | Remote Fault Detect |
| | |
| | Off | | SFD = | Symmetrical Fault Detect |
| | |
Straight-Through | = | | | = | Crossover |
| |
| | | | | |
Fig. 3 Front Panel DIP-Switches
Chassis Slot 1 (odd) | Slot 2 (even) | Slot 3 (odd) |
Backplane | “A” Link | | | “B” Link | |
| | | | |
A Port | B Port | A Port | B Port | A Port | B Port |
NMM | | | | | |
front / | | Internal | Internal |
back | | 10/100/1000 | 10/100 |
select | | switch chip | switch chip |
NMM UTP | Fiber | UTP | 4-port 10/100 UTP |
10 port | 1000 port | 10/100/1000 port | Switch |
NMM Module | GX/T Module | 4Tx Module |
Fig. 1 In-Band Managed GX/T Application
In this example, the module on the left is a Network Management Module (NMM), connecting via its A backplane port to the GX/T, facilitating In-Band management (via the fiber uplink). The module on the right is a 4-port 10/100 switch module, connecting via its B link port to the GX/T, facilitating a 1-Port GX/T and a 4-Port 10/100 Ethernet switch with a fiber uplink configuration. This 3-module configuration provides an effective 10/100/1000 UTP to 4-Port 10/100 managed switch with a gigabit fiber uplink configuration.
This example shows how the GX/T can be used either as a traditional managed or unmanaged media converter, or to create flexible and effective network switch configurations.
For more information about individual chassis A and B backplane links, please refer to the specific chassis user manual.
Page 4
Link Segment/Link Propagate “LS/LP” DIP-Switch
This DIP-Switch controls the Link Propagate or Link Segment modes. When the DIP-Switch is in the “LS” position (factory setting), Link Segment mode is enabled. In the “LP” position, Link Propagate mode is enabled.
Remote Fault Detection “RFD” DIP-Switch
When in the “RFD” position, the Remote Fault Detection mode is enabled. Set the board-mounted Port 1 DIP-Switch to Manual Mode “MAN” for this feature.
NOTE: Connecting two converters with both set to RFD mode is not supported and will cause a “deadly embrace” lockup.
Symmetrical Fault Detection “SFD” DIP-Switch
When this DIP-Switch is in the “SFD” position, the Symmetrical Fault Detection mode is enabled. When in the “Off” position (factory setting), the Symmetrical Fault Detection mode is disabled.
NOTE: Converters in SFD mode must be deployed in pairs.
RJ-45 Manual Crossover “= / X” DIP-Switch
When the board-mounted Manual Crossover Enable DIP-Switch is set to “MANX,” the front panel RJ-45 Manual Crossover Switch is enabled. When connecting the UTP to a hub or switch, set the front panel switch to Straight-Through “=” (factory setting). When connecting to a workstation, set it to Crossover “X.” Only use this setting with 10T or 100Tx mode.
