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Identifying Port Adapter Slot and T3 Interface Port Numbers
PA-T3 Serial Port Adapter Installation and Configuration
8-6
Figure 8-4 PA-T3 Serial Port Adapter in the Catalyst 5509
You can identify interface ports by physically checking the port-adapter/interface port location by
using show commands to display information about a specific interface or all interfaces in the router.
Cisco 7100 Series Ports
In the Cisco 7100 series routers, the slot number is the location in the chassis where the interface
resides and the port number is the physical port. Interfaces in the Cisco IOS software are identified
by a type, slot number, and port number. For example, serial 3/1 indicates port 1 on the serial
port adapter in slot 3.
Slots in the Cisco 7120 series routers are numbered as shown in Figure 8-5. The fixed LAN interface
is slot 0, the fixed WAN interface is slot 1, and the modular port adapter interface is slot 3. In the
Cisco 7120 series routers, slots 2 and 4 are not used. Slot 5 is the service module.
Figure 8-5 Port Adapter Slot Numbering—Cisco 7120 Series
SLOT 0 SLOT 1
0
2
FE 0 / 0 FE
AUX
7120 - AE3
RXTX
E3
RX
EN
CEL CARALM
5
I
CONS
ACT
0 / 1
ACT
LNK
0
LNK
1
PWR
SYS
RDY
Slot 1 Slot 0
Slot 3
Slot 5
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