Specifications

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Configuring Power Efficiency Management
The Cisco 3900 series, 2900 series, and 1900 series integrated services routers generation 2 (ISR G2)
have hardware and software features for reducing power consumption. The hardware features include
high-efficiency AC power supplies and electrical components with built-in power saving features, such
as RAM select and clock gating. See your router’s hardware installation guide for more information on
these hardware features. The software features include EnergyWise, a power efficiency management
feature that will power down unused modules, and disable unused clocks to the modules and peripherals
on the router. ISR G2s must be running Cisco IOS Release 15.0(1)M or later to support EnergyWise.
Detailed configuration procedures are included in the Cisco EnergyWise Configuration Guide, which can
be found at Cisco.com.
The following sections provide general information about the EnergyWise feature running on ISR G2s:
• Modules and Interface Supporting EnergyWise, page 1
• Restrictions for Power Efficiency Management and OIR, page 2
Modules and Interface Supporting EnergyWise
Table 1 lists the modules and interface cards that are supported for use with EnergyWise at the time of
this product release.
Table 1 Modules that Support the Power Efficiency Management Feature
Type of Module Module Name
SM
SM-ES2-16-P
SM-SRE
NM
NM-16-ESW
1
NME
NME-16ES-1G-P
HWIC
HWIC-4ESW-POE
HWIC-1G-SFP
HWIC-2FE
ISM
ISM-SRE-300-K9