Specifications

1-22
Cisco PA-FE-TX and Cisco PA-FE-FX Fast Ethernet 100BASE-T Port Adapter Installation and Configuration
OL-2899-02
Chapter 1 Overview
Identifying Interface Addresses
Interface Addresses of the Catalyst 5000 Family Switches with RSM/VIP2
The interface address for a module on the Catalyst 5000 family switch with RSM/VIP2 is composed of
a two-part number in the format slot/port-number. The first number identifies the slot in which the
module is installed. Module slots are numbered from top to bottom starting with 1. The second number
identifies the physical port number on the module. The port numbers always begin at 1 and are numbered
from left to right, facing the rear of the switch. In some cases, the ports are physically identified on the
module front panel. The number of additional ports (n/1, n/2, and so on) depends on the number of ports
available on the module.
Interface ports maintain the same address regardless of whether other modules are installed or removed.
However, when you move a module to a different slot, the first number in the address changes to reflect
the new slot number. For example, on a 12-port 100BASE-TX switching module in slot 2, the address
of the left port is 2/1 and the address of the right port is 2/12. If you remove the 12-port 100BASE-TX
switching module from slot 2 and install it in slot 4, the addresses of those same ports become 4/1
through 4/12.
Interface Addresses of Cisco 7000 Series Routers with VIP
The Cisco 7000 series routers accepts modules installed with a Versatile Interface Processor (VIP). The
interface address of the modules is composed of a three-part number in the format slot/bay/port-number.
The first number identifies the slot of the router in which the VIP is installed (slot 0 through 12,
depending on the number of slots in the router). These module slots are numbered from bottom to top
starting with 0.
The second number identifies the bay of the VIP in which the additional module is installed (0 or 1). The
bays are numbered from left to right on the VIP.
The third number identifies the physical port number on the module. The port numbers always begin at
1 and are numbered from left to right. The number of additional ports (n/1, n/2, and so on) depends on
the number of ports on the module.
Note Although the slots in the 7-slot Cisco 7000 are vertically oriented and those in the 5-slot Cisco 7010 are
horizontally oriented, all Cisco 7000 series routers use the same method for slot and interface port
numbering.
If the VIP is installed in slot 3, and the module is installed in bay 1 of the VIP and has a total of 8 ports,
the interface addresses of the module are 3/1/0 through 3/1/7 (slot 3, bay 1, ports 0 through 7). If you
remove the VIP with the module from slot 3 and install it in slot 2, the interface addresses become 2/1/0
through 2/1/7. I f the module was in bay 0 of the VIP, these same interface addresses would be numbered
2/0/0 through 2/0/7.