Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY Specification Guide
4
Preinstallation Requirements and Planning for Cisco 2800 Series Routers
OL-5784-01
General Site Requirements
Site Environment
Cisco 2800 series routers can be placed on a desktop or installed in a rack. This Cisco 2811 router can
also be wall mounted. The location of your router and the layout of your equipment rack or wiring room
are extremely important considerations for proper operation. Equipment placed too close together,
inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make
maintenance difficult. Plan for access to both front and rear panels of the router.
also be wall mounted. The location of your router and the layout of your equipment rack or wiring room
are extremely important considerations for proper operation. Equipment placed too close together,
inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make
maintenance difficult. Plan for access to both front and rear panels of the router.
When planning your site layout and equipment locations, remember the precautions described in the next
section “
section “
,” to help avoid equipment failures and reduce the possibility of
environmentally caused shutdowns. If you are currently experiencing shutdowns or an unusually high
number of errors with your existing equipment, these precautions may help you isolate the cause of the
failures and prevent future problems.
number of errors with your existing equipment, these precautions may help you isolate the cause of the
failures and prevent future problems.
Table 1
Power Requirements for Cisco 2800 Series Routers
Router
Power Source
Input Power
Input Voltage
Tolerance Limits
Tolerance Limits
Cisco 2801 without IP
phone power output
phone power output
AC
100 - 240 VAC, 2.0 A, 50 - 60 Hz
90 - 264 VAC
Cisco 2801 with IP
phone power output
phone power output
AC
100 - 240 VAC, 5.0 A, 50 - 60 Hz
90 - 264 VAC
Cisco 2811 without IP
phone power output
phone power output
AC
100 - 240 VAC, 2.0 A, 50 - 60 Hz
90 - 264 VAC
DC
24 - 60 VDC, 8 A, positive or negative
18 - 72 VDC
Cisco 2811 with IP
phone power output
phone power output
AC
100 - 240 VAC, 4.0 A, 50 - 60 Hz
90 - 264 VAC
Cisco 2821 without IP
phone power output
phone power output
AC
100 - 240 VAC, 3.0 A, 50 - 60 Hz
90 - 264 VAC
DC
24 - 60 VDC, 12 A, positive or negative
18 - 72 VDC
Cisco 2821 with IP
phone power output
phone power output
AC
100 - 240 VAC, 8.0 A, 50 - 60 Hz
90 - 264 VAC
Cisco 2851 without IP
phone power output
phone power output
AC
100 - 240 VAC, 3.0 A, 50 - 60 Hz
90 - 264 VAC
DC
24 - 60 VDC, 12 A, positive or negative
18 - 72 VDC
Cisco 2851 with IP
phone power output
phone power output
AC
100 - 240 VAC, 8.0 A, 50 - 60 Hz
90 - 264 VAC
Cisco 2811, 2821, and
2851
2851
Backup power:
Cisco RPS-675 Redundant
Power System
Power System
100 VAC, 10 A, or 240 VAC, 6 A