Cisco Ubr7200 Series Network Interface Overview; Card Slot And Logical Interface Numbering - Cisco 7246 - uBR Router Hardware Installation Manual

Chapter 1 Cisco uBR7200 Series Overview
Figure 1-2

Cisco uBR7200 Series Network Interface Overview

This section provides a functional overview of the network interfaces available on the Cisco uBR7200
series universal broadband router, port adapter and cable interface card slot and logical interface
numbering, as well as the MAC address assignments for port adapter and cable interface card interfaces.

Card Slot and Logical Interface Numbering

In all of the Cisco uBR7200 series universal broadband routers, the slot number is the chassis slot in
which a port adapter or a cable interface card is installed, and the logical interface number is the physical
location of the interface port on a port adapter.
Port adapter and cable interface card slots maintain the same slot number regardless of whether other
port adapters or cable interface cards are installed or removed. However, when you move a port adapter
or cable interface card to a different slot, the logical interface number changes to reflect the new slot
number.
The MAC-layer or hardware address is a standardized data-link layer address that is required for certain
network interface types. These addresses are specific and unique to each port. The Cisco uBR7200 series
uses a specific method to assign and control the MAC-layer addresses of its port adapters. For a
description of the MAC-layer address, refer to the
OL-5421-03
Cisco uBR7246VXR Router
AC-input Power
switch
receptacle
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide
— Rear View
Handle
"MAC-Layer Address" section on page
Cisco uBR7200 Series Network Interface Overview
Network processing
engine
Ground lug location
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