Cisco / GLC-SX-MMD / SFP ( Mini - GBIC ) Transceiver Multi Mode Gigabit ( Original )
GLC-SX-MMD Overview
The GLC-SX-MMD 1000BASE-SX SFP is made for Multimode Fiber only.
The 1000BASE-SX SFP, compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multimode fiber cable. 850-nm wavelength, extended operating temperature range and DOM support, dual LC/PC connector.
The table provides cabling specifications for the SFPs that you install in the Gigabit Ethernet port.
Note that all SFP ports have LC-type connectors, and the minimum cable distance for all SFPs listed (multimode and single-mode fiber) is 6.5 feet (2 m).
SFP Port Cabling Specifications
|
Product |
Wavelength (nm) |
Fiber Type |
Core Size (μm) |
Modal Bandwidth (MHz* Km)*** |
Operating Distance (m) |
|
1000BASE-SX (GLC-SX-MMD) |
850 |
MMF |
62.5 |
160 (FDDI-grade) |
220 (722 ft) |
|
62.5 |
200 (OM1) |
275 (902 ft) |
|||
|
50 |
400 (400/400) |
500 (1,640 ft) |
|||
|
50 |
500 (OM2) |
550 (1,804 ft) |
|||
|
50 |
2000 (OM3) |
1000 (3281 ft) |
|||
|
1000BASE-LX/LH |
1310 |
MMF* |
62.5 |
500 |
550 (1,804 ft) |
|
50 |
400 |
550 (1,804 ft) |
|||
|
50 |
500 |
550 (1,804 ft) |
|||
|
SMF |
-** |
- |
10,000 (32,821 ft) |
||
|
1000BASE-EX |
1310 |
SMF |
-** |
- |
40,000 (131,234 ft) |
|
1000BASE-ZX (GLC-ZX-SM ) (GLC-ZX-SMD ) |
1550 |
SMF |
- |
- |
Approximately 70 km depending on link loss |
|
1000BASE-BX-U |
1310 |
SMF |
-** |
- |
10,000 (32,821 ft) |
|
1000BASE-BX-D |
1490 |
SMF |
-** |
- |
10,000 (32,821 ft) |
*A mode-conditioning patch cord, as specified by the IEEE standard, is required regardless of the span length. Note how the mode conditioning patch cord for 62.5-μm fibers has a different specification from the mode-conditioning patch cord for 50-μm fibers.
**ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
***Specified at transmission wavelength.
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