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Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
OL-17438-04
Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
1-Port OC-192/STM-64 POS SPA Overview
•
RFC 1213,
Management Information Base (MIB) for Network Management of TCP/IP-Based
Internets:MIB II
1-Port OC-192/STM-64 POS/RPR SPA Fixed Optical Transceiver, 40-Pin
Connector, and Cables
The 1-Port OC-192/STM-64 POS/RPR SPA uses fixed optical transceivers, one for receive (RX) and one
for transmit (TX), for SONET and SDH connection to the network. In Cisco IOS Release 12.0(31)S,
only long-reach (LR) optics are supported.
Cisco Systems qualifies the optics that are approved for use with its SPAs. As of Cisco IOS Release
12.0(31)S and Cisco IOS XR Software Release 3.2, the XFP-10GLR-OC192SR and the
XFP-10GER-OC192IR are the only optical transceiver modules qualified for use.
The 1-Port OC-192/STM-64 POS/RPR SPA uses single-mode SC-type connectors:
•
Single-mode—9.95 Gbps, OC-192 optical fiber (SONET STS-192 or SDH STM-64c)
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.)
Use a single-mode optical fiber cable to connect your router to a network.
Note
The 40-pin connector on the 1-Port OC-192/STM-64 POS/RPR SPA is used for resilient packet ring
(RPR) connections.
shows the cable type for use with the fixed optical transceiver module on the 1-Port
OC-192/STM-64 POS/RPR SPA.
Figure 2-26
SC-Type Connectors for the Fixed Optical Transceivers
Mate Interface Cables
The 1-Port OC-192/STM-64 POS/RPR SPA supports two mate interface configurations:
•
Mate between two OC-192 SPAs in the same SIP
•
Mate between two OC-192 SPAs in adjacent SIPs
Two 1-Port OC-192/STM-64 POS/RPR SPAs are connected using a 40–pin connector copper mate cable.
The length of the cables allow only two possible connection scenarios, next slot horizontal and same slot
vertical. This assumes that the chassis is mounted vertically. Figure 2-27 shows the mate cables used to
connect the SPAs.
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