2-23
Cisco 12000 Series Router SIP and SPA Hardware Installation Guide
Release 12.0(32)SY1, OL-8831-01, Rev. G6, July 19, 2007
Chapter 2 Overview: Cisco 12000 Series Router Shared Port Adapters
10-Port Gigabit Ethernet SPA Overview
Note
The 1000BASE-ZX SFP modules provide an optical power budget of 21.5 dB. You should measure your
cable plant with an optical loss test set to verify that the optical loss of the cable plant (including
connectors and splices) is less than or equal to 21.5 dB. The optical loss measurement must be performed
with a 1550-nm light source.
10-Port Gigabit Ethernet SPA Overview
The following sections describe the 10-Port Gigabit Ethernet SPA:
•
10-Port Gigabit Ethernet SPA LEDs, page 2-24
•
10-Port Gigabit Ethernet SPA Cables and Connectors, page 2-24
Table 2-20 SFP Module Port Cabling Specifications
SFP Modules
Wavelength
(nm)
Fiber Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km)
Maximum
Cable Distance
SFP-GE-S
850
MMF
1
1.
Multimode fiber (MMF) only.
62.5
160
722 ft (220 m)
62.5
200
984 ft (300 m)
50.0
400
1640 ft (500 m)
50.0
500
1804 ft (550 m)
SFP-GE-L
1300
MMF
2
and
SMF
2.
A mode-conditioning patch cord is required.
When using the SFP-GE-L with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord between the
SFP module and the MMF cable on both the transmit and the receive ends of the link when link distances are greater than
984 ft (300 m).
We do not recommend using the SFP-GE-L and MMF with no patch cord for very short link distance (tens of meters). The
result could be an elevated bit error rate (BER).
62.5
500
1804 ft (550 m)
50.0
400
1804 ft (550 m)
50.0
500
1804 ft (550 m)
9/10
—
6.2 miles (10 km)
SFP-GE-Z
1550
SMF
9/10
—
49.7 miles
(80 km)
SMF
3
3.
Dispersion-shifted single-mode fiber-optic cable.
8
—
62.1 miles
(100 km)
SFP-GE-T
N/A
Copper
N/A
N/A
328 ft. (100 m)
