MIM-GEF Modules of H3C Series Routers
I. Introduction
MIM-1GEF is the short of 1-port 1000Base-LX/1000Base-SX Ethernet optical interface module. Where GE (Gigabit Ethernet) is the abbreviation of gigabit Ethernet, F (Fiber) represents optical interface. GEF module is primarily used for the communications between a router and LAN.
The functions supported by GEF module are as follows:
l Provide five kinds of 1000Base-LX/SX SFP pluggable optical interface modules, including short haul multimode (850nm) optical module, medium haul single mode (1310nm) optical module, long haul single mode (1310nm) optical module, long haul single mode (1550nm) optical module and ultra long haul single mode (1550nm) optical module. User can select as required.
l The interface works at 1000Mbps rate.
l Support full duplex operational mode.
II. Module Appearance
MIM-1GEF module appearance is shown as follows:
Figure1 1GEF module appearance
III. Module Interface Attributes
MIM-1GEF module interface attributes are shown as follows:
Table 1 1GEF module interface attributes
Attributes |
Description | |||||
Type of connector |
SFP/LC | |||||
Interface number |
1 | |||||
Interface standard |
802.3, 802.3u and 802.3ab | |||||
Transmitting optical power |
Type |
Transmitting optical power |
Type |
Transmitting optical power |
Type |
Transmitting optical power |
Minimum |
|
Minimum |
|
Minimum |
| |
maximum |
|
maximum |
|
maximum |
| |
Receiving sensitivity |
-17dBm |
Receiving sensitivity |
-17dBm |
Receiving sensitivity |
-17dBm | |
Core wavelength |
850nm |
Core wavelength |
850nm |
Core wavelength |
850nm | |
Type of fiber |
62.5/125μm multimode fiber |
Type of fiber |
62.5/125μm multimode fiber |
Type of fiber |
62.5/125μm multimode fiber | |
Maximum transmission |
0.55km |
Maximum transmission |
0.55km |
Maximum transmission |
0.55km | |
Operational mode |
1000Mbps full duplex mode |
IV. Module Interface Indicator
MIM-1GEF module panel is shown as follows:
Figure2 MIM-1GEF module panel
The following provides the implication of indicators on MIM-1GEF module panel:
Table 2 Implication of MIM-1GEF module indicator
LINK |
Extinguished represents the link is not connected; lighting represents that the link is connected. |
ACT |
Extinguished represents no data has been received/sent; flashing represents some data has been received/sent. |
V. Module Interface Cable
For MIM-1GEF module, user can select the corresponding fiber depending on the type of selected 1000Base-SX/1000Base-LX SFP pluggable optical interface module. The optical interfaces of these optical modules are LC-type fiber connectors, so user is required to use fibers with LC-type fiber connector.
Figure3 LC type fiber connector appearance
& Note:
As a small fiber connector developed by Lucent Company, LC type fiber connector employs push/pull buttion installation.
Fibers are optional. User needs to specify the configured SFP module in advance when purchasing interface modules, or the corresponding fiber will not available.
VI. Connection of Module Interface Fiber
Note:
The following proceedings should be noted when cabling:
l Do not overbend a fiber, its bending radius should no less than 10cm;
l Make sure that the Tx side of an interface is connected to the Rx side correctly;
l Guaranteeing the cleanness of fiber surface.
Warning:
Laser danger! Do not directly observe fiber connectors attached to the laser diode, this may damage eyes.
Step 1: insert SFP module into the corresponding SFP slot.
Step 2: confirm Rx and Tx optical interfaces on the GE interface, and insert one side of a fiber into Rx interface, the other is attached to Tx interface of the peer; insert one side of another fiber into Tx interface, the other is attached to Rx interface of the peer.
Step 3: after powered on, examine the indicators of the corresponding slots on the front panel of router. Lighting represents that self test of the module has been accomplished and the module works properly; extinguished represents that self test did not pass after the module inserted, please contact agent.
Step 4: examine the state of LINK indicator of GE interface. Lighting represents that Rx link is connected; extinguished represents that Rx link is not connected, please examine lines.
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