Cisco ASR1004 - ASR 1004 Modular Expansion Base - SFP Module Cabling and Connection Equipment

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
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Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
10-Port Gigabit Ethernet SPA Overview
The 1000BASE-ZX module must be coupled to single-mode fiber-optic cable, which is the type of cable
typically used in long-haul telecommunications applications. The 1000BASE-ZX module does not
operate correctly when coupled to multimode fiber, and it is not intended to be used in environments in
which multimode fiber is frequently used (for example, building backbones or horizontal cabling).
The 1000BASE-ZX module is intended to be used as a Physical Medium Dependent (PMD) component
for Gigabit Ethernet interfaces found on various switch and router products. It operates at a signaling
rate of 1250 Mbaud, transmitting and receiving 8B/10B encoded data.
When shorter lengths of single-mode fiber are used, it may be necessary to insert an inline optical
attenuator in the link to avoid overloading the receiver. Use the following guidelines:
• Insert a 10-dB inline optical attenuator between the fiber-optic cable plant and the receiving port on
the 1000BASE-ZX module at each end of the link whenever the fiber-optic cable span is less than
15.5 miles (25 km).
• Insert a 5-dB inline optical attenuator between the fiber-optic cable plant and the receiving port on
the 1000BASE-ZX module at each end of the link whenever the fiber-optic cable span is equal to or
greater than 15.5 miles (25 km) but less than 31 miles (50 km).
SFP-GE-T Modules
The 1000BASE-T SFP module (SFP-GE-T) is compliant with IEEE 802.3:2000 and plugs into a
standard Gigabit Ethernet SFP module port. It operates on standard Category 5 wiring and has an RJ-45
connector. The SFP-GE-T maximum cabling distance is 328 feet (100 m).
The SFP-GE-T is hot-swappable. Autonegotiation is not supported. The SFP-GE-T module supports
10/100/1000 speeds, which must be explicitly configured using the speed command. Only full-duplex mode
is supported, which must be configured using the duplex full command.
SFP Module Cabling and Connection Equipment
Table 3-17 provides cabling specifications for the SFP modules that can be installed on the Gigabit
Ethernet SPAs. Note that all SFP ports have LC-type connectors.
The minimum cable distance for the SFP-GE-S is 6.5 feet (2 m), and the minimum link distance for the
SFP-GE-Z is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link. Without
attenuators, the minimum link distance for the SFP-GE-Z is 24.9 miles (40 km).
Table 3-17 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
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
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)