2-Port And 4-Port Oc-3C/Stm-1 Atm Spa Interface Specifications; 2-Port And 4-Port Oc-3C/Stm-1 Atm Spa Cables And Connectors; 2-Port And 4-Port Oc-3C/Stm-1 Pos Spa Overview - Cisco Catalyst 6500 Series Hardware Installation Manual

2-Port and 4-Port OC-3c/STM-1 POS SPA Overview

2-Port and 4-Port OC-3c/STM-1 ATM SPA Interface Specifications

The physical layer interface for the 2-Port and 4-Port OC-3c/STM-1 ATM SPA is Optical Carrier-3
(OC-3), and the data link layer is designed to comply with ATM specifications. The 2-Port and 4-Port
OC-3c/STM-1 ATM SPA provides up to four 155-Mbps OC-3 network interfaces for all supported
platforms.
Each SPA port accepts an SFP module with a duplex LC-type receptacle that allows connection to
single-mode or multimode optical fiber.

2-Port and 4-Port OC-3c/STM-1 ATM SPA Cables and Connectors

The 2-Port and 4-Port OC-3c/STM-1 ATM SPAs provide the following optical fiber options:
•
•
For single-mode and multimode optical fiber connections, you can use either a duplex LC-type cable (see
Figure
Figure 3-9
RX
Use single-mode (for intermediate- or long-reach configurations) or multimode optical fiber cable to
connect your router to a network or to connect two OC-3-equipped routers back-to-back.
Long-range SFP optics modules (for long-reach configurations) cannot be connected back-to-back
without using an attenuator between the two of them.

2-Port and 4-Port OC-3c/STM-1 POS SPA Overview

The 2-Port and 4-Port OC-3c/STM-1 POS SPAs are single-height SPAs that install into one SIP subslot.
The OC-3c/STM-1 POS SPAs with small form-factor pluggable (SFP) optical transceiver modules
provide SONET and SDH network connectivity with a per-port bandwidth of 155.52 Mbps. For more
information about SPA bandwidth, see the
information about SPAs and their compatibility with SIPs and modular optics, see the
SPA Compatibility" section on page
Catalyst 6500 Series Switch SIP, SSC, and SPA Hardware Installation Guide
3-14
Multimode—155-Mbps, OC-3 optical fiber (SONET STS-3c or SDH STM-1)
Use a multimode optical fiber that has a core/cladding diameter of 62.5/125 microns.
Single-mode—155-Mbps, OC-3 optical fiber (SONET STS-3c or SDH STM-1)
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.)
3-9) or two simplex LC-type cables, one for transmit (TX) and one for receive (RX).
Duplex Patch Cable with LC-Type Connectors
TX
Chapter 3
/ /
/ / / /
"Bandwidth Oversubscription" section on page
1-3.
Catalyst 6500 Series Switch SPA Overview
3-3. For more
"SIP, SSC, and
OL-9041-04