Cisco 7304 Installation Guide download pdf (Page 39)

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Cisco 7304 Router Modular Services Card and Shared Port Adapter Hardware Installation Guide

OL-4681-01

Chapter 3 Overview: Cisco 7304 Router Shared Port Adapters

OC-12 POS SPA Overview

The 1-Port OC-12c/STM-4 POS SPA also provides support for SNMP v1 agent (RFC 1155–1157) and

RFC 1213:

• RFC 1155, Structure and Identification of Management Information for TCP/IP-based Internets

• RFC 1156, Management Information Base for Network Management of TCP/IP-Based Internets

• RFC 1157, Simple Network Management Protocol (SNMP)

• RFC 1213, Management Information Base (MIB) for Network Management of TCP/IP-Based

Internets:MIB II.

1-Port OC-12c/STM-4 POS SPA SFP Optical Transceiver Modules and Cables

The POS SPA uses a small form-factor pluggable (SFP) optical transceiver module installed in each port

for SONET and SDH single-mode and multimode optical fiber connection (see Figure 3-12).

Cisco Systems qualifies the optics that are approved for use with its SPAs. The 1-Port OC-12c/STM-4

POS SPA supports the following types of optical transceiver modules:

• Multimode (MM) SFP module—SFP-OC12-MM

• Short reach (SR) SFP module—SFP-OC12-SR

• Intermediate reach (IR) SFP module (15 km)—SFP-OC12-IR1

• Long reach (LR) SFP module (40 km)—SFP-OC12-LR1

• LR SFP module (80 km)—SFP-OC12-LR2

Figure 3-12 SFP Optics Module

The SFP optical transceiver modules used with the POS SPAs provide the following optical fiber

options:

• Multimode—622.08-Mbps, OC-12 optical fiber (SONET STS-12c or SDH STM-4)

Use a multimode optical fiber that has a core/cladding diameter of 62.5/125 microns.

• Single-mode—622.08-Mbps, OC-12 optical fiber (SONET STS-12c or SDH STM-4)

Use a single-mode optical fiber that has a modal-field diameter of 8.7 ±0.5 microns. (Nominal

diameter is approximately 10/125 microns.)

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Cisco 7304 Installation Guide Page 39