Cisco 7200 VXR router User Manual page 58

Functional Overview
Figure 1-21 Port Adapter Slot Numbering—Cisco 7206VXR
Cisco 7200
Series VXR
Port adapter slot 5
Port adapter slot 3
Port adapter slot 1
The Media Access Control (MAC)-layer or hardware address is a standardized data link
layer address that is required for certain network interface types. These addresses are not
used by other devices in the network; they are specific and unique to each port. The
Cisco 7200 VXR routers use a specific method to assign and control the MAC-layer
addresses of its port adapters. For a description of the MAC-layer address, see the
"MAC-Layer Address" section on page 50.
Port adapter slots maintain the same slot number regardless of whether other port adapters
are installed or removed. However, when you move a port adapter to a different slot, the
port adapter's slot number changes to reflect the new slot number.
You can identify port adapter slots by using software commands. To display information
about all port adapter slots, use the show interfaces command. To display information
about a specific port adapter slot, use the show interfaces command with the port adapter
type and slot number in the format show interfaces (port adapter type and slot number/port
number). If you abbreviate the command (sh int) and do not specify port adapter type and
slot number (or arguments), the system interprets the command as show interfaces and
displays the status of all port adapters and ports.
1-48 Cisco 7200 VXR Installation and Configuration Guide
Blank port adapter
ETHERNET 10BT
Port adapter slot 0
Port adapter slot 6
Port adapter slot 4
Port adapter slot 2
TOKEN RING
ETHERNET-10BFL
FAST ETHERNET INPUT/OUTPUT CONTROLLER