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PA-4R Half-Duplex Token Ring Port Adapter Installation and Configuration
OL-3589-01
What Is the 4R Port Adapter?
Figure 3 Two Port Adapters on the VIP2-15 or VIP2-40 (Horizontal Orientation Shown)
Note In the Cisco 7000, Cisco 7507, and Cisco 7513 chassis, the VIP2 is installed vertically. In the Cisco 7010
and Cisco 7505 chassis, the VIP2 is installed horizontally.
In the Cisco 7200 series routers, port adapter slots are numbered from the lower left to the upper right,
beginning with port adapter slot 1 and continuing through port adapter slot 2 for the Cisco 7202, slot 4
for the Cisco 7204, and slot 6 for the Cisco 7206. Port adapter slot 0 is reserved for the optional Fast
Ethernet port on the I/O controller.
Note The I/O controller is available with or without a Fast Ethernet port. You can install both I/O controller
types in all Cisco 7200 series routers; however, when you install an I/O controller with a Fast Ethernet
port in a Cisco 7202, the system software automatically disables the port.
Figure 4 shows a Cisco 7206 with installed port adapters and an I/O controller with a Fast Ethernet port.
Not shown are the Cisco 7202, which has two port adapter slots, and the Cisco 7204, which has four port
adapter slots. The 4R-FDX port adapter can be installed in any available port adapter slot in the
Cisco 7200 series routers.
H6448
DRAM
SIMMs
Port adapter
in slot 0
Port adapte
r
in slot 1
SRAM
DIMM U5
CPU
Boot ROM
Bus connector
U6
U4
U2