C H A P T E R 1
Overview
This chapter provides physical and functional overviews of the PA-2H dual-port high-speed serial interface (HSSI) port adapter. The chapter contains the following sections:
Port Adapter Overview, page 1-1
LEDs, page 1-3
Receptacles, Cables, and Pinouts, page 1-4
Port Adapter Overview
The PA-2H dual-port HSSI port adapter provides two high-speed serial interfaces. (See Figure 1-1.) The interfaces on PA-2H are considered to be data terminal equipment (DTE) devices. (Port adapters have a handle attached, but this handle is occasionally not shown in figures in this publication to allow a full view of detail on the port adapter faceplate.)
Figure 1-1 PA-2H Port Adapter (Faceplate View)
HSSI network interfaces reside on modular port adapters, which provide a direct connection between the high-speed bus in the router and the external networks. The PA-2H port adapter can be installed in the following slots on the hardware platforms described in this document:
•VIP2—Port adapter slot 0 and port adapter slot 1
•Catalyst RSM/VIP2—Port adapter slot 0 and port adapter slot 1
•Cisco 7200 series routers—Port adapter slot 1 through 6 in the Cisco 7206, or slots 1 through 4 in the Cisco 7204
•Cisco uBR7200 series routers—Port adapter slot 1 or slot 2 of the Cisco uBR7246, and port adapter slot 1 for the Cisco uBR7223.
Each HSSI port is a female, 50-pin, SCSI-II-type receptacle. You must use an HSSI interface cable to connect the interface with an external data service unit (DSU). Refer to the “Receptacles, Cables, and Pinouts” section on page 1-4 for descriptions of HSSI cables.
