6-17

Network Processing Engine and Network Services Engine Installation and Configuration

OL-4448-12

Chapter 6 NPE-G2 Overview

NPE-G2 Memory Information and Specifications

Table 6-8 provides SFP module specifications.

The NPE-G2 supports single Gigabit Ethernet interfaces based on SFP technology. The following SFP

modules are supported by the NPE-G2:

• 100BASE-FX SFP—The SFP-GE-F=, 100BASE-FX SFP module is a hot-swappable device that

plugs into a Gigabit Ethernet SFP port. It provides full-duplex 100-Mbps connectivity between

switches over multimode fiber (MMF) infrastructures. The 100BASE-FX SFP operates on ordinary

MMF optical link spans of up to 6562 ft (2 km) in length. Customers implementing Cisco

100BASE-FX SFP can use 1000BASE-X SFP modules in the future (including SX, LH/LX, ZX, and

coarse wavelength-division multiplexing SFP modules).

• 1000BASE-LX/LH SFP—The SFP-GE-L=, 1000BASE-LX/LH SFP module operates on ordinary

single-mode fiber-optic link spans of up to 32,808 ft (10,000 m) in length.

• 1000BASE-SX SFP—The SFP-GE-S=, 1000BASE-SX SFP module operates on ordinary

multimode fiber-optic link spans of up to 1804 ft (550 m) in length.

• 1000BASE-ZX SFP—The SFP-GE-Z=, 1000BASE-ZX SFP module operates on ordinary single

mode fiber-optic link spans of up to 43.5 miles (70 km) in length. Link spans of up to 62.1 miles

(100 km) are possible using premium single-mode fiber or dispersion-shifted single-mode fiber. The

SFP module provides an optical link budget of 23 dB—the precise link span length depends on

multiple factors such as fiber quality, number of splices, and connectors.

When shorter distances of single-mode fiber are used, it may be necessary to insert an inline optical

attenuator in the link to avoid overloading the receiver. A 5-decibel (dB) or 10-dB inline optical

attenuator should be inserted between the fiber-optic cable plant and the receiving port on the

SFP-GE-Z= at each end of the link whenever the fiber-optic cable span is less than 15.5 miles (25

km).

Note Optical fiber cables are commercially available; they are not available from Cisco.

Note We strongly recommend cleaning optical fiber connections before attaching cables to equipment. See the

“Fiber Optic Cleaning Information” section on page 6-23 for information.

Table 6-8 SFP Module Specifications

Specification Description

Dimensions (H x W x D) Height: 0.33 in. (8.5 mm)

Depth: 0.53 in. (13.4 mm)

Width: 2.22 in. (56.5 mm)

Connectors Multimode fiber-optic: LC

Single-mode fiber-optic: LC

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23 24

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