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Configuring the PA-T3 Interfaces 8-3
Cisco 7200 Series and Cisco uBR7200 Series Ports
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.
For example, the serial port on a one-port PA-T3 serial port adapter in port adapter slot 3 has the
address 3/0. (See Figure 8-1.) If the PA-T3 serial port adapter is in port adapter slot 1, this same
interface port is numbered 1/0. The serial ports on a two-port PA-2T3 serial port adapter in port
adapter slot 3 has the address 3/0 and 3/1.
Note The PA-T3 serial port adapter is considered a high-bandwidth port adapter; you must observe
specific configuration guidelines. Referto the publication Cisco 7200 Series Port Adapter Hardware
Configuration Guidelines, which shipped with your Cisco 7200 series chassis and is also available
on the Cisco Connection Documentation, Enterprise Series CD-ROM.
Figure 8-1 Serial Port Number Example—Cisco 7206
Figure 8-2 shows the interface ports of a PA-T3 port adapter in slot 2 of a Cisco uBR7200 series
router. The port adapter slots are numbered slot 1 and slot 2 for the Cisco uBR7246 and slot 1 for
the Cisco uBR7223 (slot 0 is always reserved for the Fast Ethernet port on the I/O controller—if
present). The individual interface port numbers always begin with 0. The number of additional ports
depends on the number of ports on a port adapter. Port adapters can occupy any port adapter slot;
there are no restrictions.
For example, the serial port on a one-port PA-T3 serial port adapter in port adapter slot 1 has the
address 1/0. (See Figure 8-2.) If the PA-T3 serial port adapter is in port adapter slot 2, this same
interface port is numbered 2/0. The serial ports on a two-port PA-2T3 serial port adapter in
port adapter slot 2 have the address 2/0 and 2/1.
H10043
FAST SERIAL
EN
TD
TC
RD
RC
LB
CD
TD
TC
RD
RC
LB
CD
TD
TC
RD
RC
LB
CD
TD
TC
RD
RC
LB
CD
ENABLED
MII
LINK
RJ45
FAST ETHERNET
0
TOKEN RING
0
1
2
3
0
2
4
1
3
5
6
ENABLED
RCLK
XMTR
RCVR
FERF
OOF
RL
LL
AIS
1DS3 SERIAL
ETHERNET-10BFL
EN
RX
0
1
2
3
4
TX
RX
TX
RX
TX
RX
TX
RX
TX
FAST ETHERNET INPUT/OUTPUT CONTROLLER
ENABLED
PCMCIA
EJECT
SLOT 0
SLOT 1
FE MII
PA-T3 port adapter
(port number 3/0)
MII
EN
RJ-45
EN
RJ-45
RJ-45
LINK
1O PWR
OK