Obtaining Documentation - Cisco uBR-3x10 Hardware Installation And Cabling Manual

Chapter 1 Cisco uBR-3x10 RF Switch Overview
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Interface Overview
The following sections describe interface numbering, and MAC address assignments.
Interface Numbering
In all of the Cisco RF switches, the slot number is the chassis slot in which an Ethernet controller or an
upstream switch module or downstream switch module is installed, and the logical interface number is
the physical location of the interface port on an Ethernet controller.
The MAC-layer or hardware address is a standardized data link layer address that is required for certain
network interface types. The Cisco uBR 3x10 RF Switch uses a specific method to assign and control
the MAC-layer addresses of its Ethernet controller.
The Ethernet controller and upstream and downstream module slots keep the same slot number
regardless of whether other Ethernet controllers or upstream or downstream modules are installed or
removed. However, when you move an upstream or downstream module to a different slot, the logical
interface number changes to reflect the new slot number. The Ethernet card is always installed in the
same slot.
For complete descriptions and instructions for the commands used to configure your Cisco RF switch,
refer to the "N+1 Redundancy for the Cisco CMTS" chapter of the Cisco CMTS Feature Guide, which
is available on Cisco.com. (See the
MAC-Layer Address Assignments
All LAN interfaces (ports) require unique MAC-layer addresses, also known as hardware addresses.
Typically, the MAC address of an interface is stored on a memory component that resides directly on the
interface circuitry; however, the online insertion and removal (OIR) feature requires a different method.
OL-1984-06
Rear View of the Cisco uBR-3x10 RF Switch
Mounting brackets
CMTS (working) MCX connector location
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PROTECT MCX connector location
4 CABLE PLANT MCX connector location
"Obtaining Documentation" section on page
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
About the Cisco uBR 3x10 RF Switch
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