Cisco uBR10012 Software Configuration Manual page 29

Chapter 1 Overview of Cisco uBR10012 Universal Broadband Router Software
Table 1-4
Performance Routing Engine
(PRE1 or PRE2)
AC-input Power Entry Module
(PEM)
DC-input Power Entry Module
(PEM)
Fan assembly module
OL-1520-05
Cisco uBR10012 Universal Broadband Router Supported Hardware
One PRE1 or PRE2 module performs layer 2 and layer 3 packet
processing, as well as routing and system management functions.
Two PRE modules can be installed for redundancy.
The PRE1 module is functionally identical to the PRE
Note
module except that it adds support for the Error Checking and
Correction (ECC) feature, which can automatically correct
single-bit memory errors.
The Cisco uBR10012 PRE1 module supports an Ethernet
Note
port to a LAN for a 10BASE-T or 100BASE-T connection for
network management. The PRE1 module supports
connections of 800 Mbps in full duplex (each direction) per
half-slot.
The Cisco uBR10012 router ships with two AC power entry modules
(AC PEMs) that provide a redundant power supply to the system. One
AC PEM can provide sufficient power for a fully configured chassis,
so that if one AC PEM fails, the other automatically begins providing
power for the entire router, without impacting system operations.
The AC PEMs use standard 200–240 VAC (50/60 Hz) input power
obtained through power receptacles on the front panel of each PEM.
The two AC PEMs convert the AC power to provide filtered,
redundant, and load shared DC power to the Cisco uBR10012
chassis.
Caution
The Cisco uBR10012 router may ship with two DC PEMs to provide
power to the chassis. The use of two PEMs provide power balancing
and redundancy, as well as the ability to hot-swap a single power
supply when needed.
Caution
The fan assembly module contains four fans that are capable of
cooling the chassis even with the failure of a single fan. The fan
assembly is dual-speed, providing additional cooling when the
chassis temperature exceeds the nominal operating range.
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
Cisco uBR10012 Universal Broadband Router Chassis Overview
The Cisco uBR10012 router does not support mixing AC
and DC PEMs. Both PEMs must be either AC PEMs or DC
PEMs.
The Cisco uBR10012 router does not support mixing AC
and DC PEMs. Both PEMs must be either AC PEMs or DC
PEMs.
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