Cisco uBR-3x10 Hardware Installation And Cabling Manual page 19

Chapter 1 Cisco uBR-3x10 RF Switch Overview
Figure 1-3
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Ethernet Controller Module
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Within the Cisco uBR 3x10 RF Switch system, only one Ethernet controller is used.
The Ethernet controller module performs two primary functions.
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OL-1984-06
Power Supply Module
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Strain relief for DC power cables
Captive screws
Power LED (green–on)
DC power connection
Cisco part number 74-2620-01 (see
Connecting the Cisco uBR 3x10 RF Switch to a Cisco uBR10012 router or a Cisco uBR7246VXR
router. You can use a crossover cable to connect the Cisco CMTS to the RF switch Ethernet
controller's RJ-45 receptacle. Or, you can use a straight-through cable to connect the RF switch and
the CMTS through an ethernet switch or a hub. This connection allows you to remotely control both
automatic and manual operations of the Cisco RF switch by passing SNMP traffic between the
Cisco RF switch and the Cisco CMTS.
For example, when a cable interface line card on the Cisco universal broadband router experiences
a failure or if the Cisco universal broadband router detects a large number of remote customer
premises equipment (CPE) devices that have gone offline, an SNMP alert is automatically
transmitted to the Cisco uBR 3x10 RF Switch and a protecting cable interface line card assumes
working status for the failed or faulty cable interface line card.
Connecting a console terminal to the Cisco uBR 3x10 RF Switch. You can use a rollover cable to
connect the console terminal to the RF switch Ethernet controller's EIA/TIA-232 receptacle.This
connection allows you to configure the Cisco uBR 3x10 RF Switch for N+1 redundancy. Use the
configuration commands described in the "N+1 Redundancy for the Cisco CMTS" chapter of the
Cisco CMTS Feature Guide, available on Cisco.com. (See the
on page 11.)
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5 Power select switch (power off, AC, or DC).
This is a three way toggle switch, the center
position is off; toggle down for AC, toggle up
for DC.
6 AC power input with strain relief retainer clip
Figure 1-4 on page
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
Hardware Component Descriptions
1-6).
"Obtaining Documentation" section
1-5