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Cisco 900 Series ISRs-Chassis Views, Power Supply and Specs

Chassis Views

This section includes front and back panel layouts of the Cisco 900 Series ISR, as well as the locations of the power and signal interfaces, interface slots, status indicators, and chassis identification labels.

Cisco C921 4P IO View Gear Net Technologies LLC

Cisco C921J 4P IO View Gear Net Technologies LLC

Cisco C931 4P IO View Gear Net Technologies LLC

LED Indicators

The figures and table below highlight the LED indicators found in the bezel or chassis of the 900 series.

LED Indicators IO Side Gear Net Technologies LLC

Table2. LED Indicators for Cisco ISR 900 Series Routers

Port LED Color Description
SYS OFF System is off
Blink Boot up phase or in ROM Monitor mode
Steady on Normal operation
Amber(steady) Thermal trip
Amber(blink) ROMMON code signing verification failure
VPN OK Green At least one VPN session is active
OFF VPN not connected
LAN Green(Solid) LAN connection is established.
Green (Blinking) Data transmission is happening on the link.
OFF LAN is not connected
WAN Green(Solid) WAN link is established
Green (Blinking) Data transmission is happening on the link.
OFF WAN link is not connected.

Power Supply

The following are the product power specifications for external power supply units:

  • AC input voltage: Universal 100 to 240 VAC
  • Frequency: 50 to 60 Hz
  • Maximum output power: 18W or 30W depending on the SKU
  • Output voltage: +12VDC for system power

Refer to the Cisco 900 Series Specifications document for information on the Cisco 900 Series ISRs.

Periodic Inspection and Cleaning

To reduce the harmful impact of environmental dust and debris, we recommend regularly inspecting and cleaning the router’s external surface. Specifically, the frequency of examination and cleaning should depend on the severity of the environmental conditions. However, we propose performing this maintenance at least once every six months. Moreover, part of the cleaning process includes vacuuming the router’s air intake and exhaust vents.

Keep in mind that sites with persistently high ambient temperatures and significant amounts of dust may require more frequent preventative maintenance cleaning. Therefore, if your environment poses these challenges, consider increasing the cleaning frequency to ensure optimal performance.

TechBlonHub
Author: TechBlonHub

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