Memory

Memory

Cisco 3800 series routers contain the following types of memory:

Main memory consists of ECC DDR SDRAM. It stores the running configuration and routing tables, and buffers packets at the network interfaces. Both routers ship with 256 MB of main memory. The two DIMM slots can be upgraded with 128-MB, 256-MB, or 512-MB DIMMs to a maximum of 1024 MB (1 GB).

An external CompactFlash memory card stores the Cisco IOS software image. The routers are shipped with a 64-MB CompactFlash memory card, which can be upgraded to 128 MB or 256 MB.

The routers boot from 4 MB of internal flash memory. This memory cannot be upgraded.

Power

Table 1 summarizes power options for Cisco 3800 series routers. Both the Cisco 3825 router and the Cisco 3845 router support an AC input power supply, an AC input power supply with IP phone power output, or a DC input power supply. The Cisco 3825 router has one internal power supply and also provides a connector for the optional Cisco Redundant Power System (RPS) external backup power source. The Cisco 3845 router supports two internal power supplies and operates in redundant mode both are installed.

Table 1

Cisco 3800 Series Routers Power Options

 

 

 

 

 

 

 

Router

 

Power Option

Input

IP Phone Power Output

 

 

 

 

 

Cisco 3825

 

AC input without IP phone power

100–240 VAC, 3 A

None

 

 

output

 

 

 

 

 

 

 

 

 

AC input with 24 ports of IP phone

100–240 VAC, 8 A

–48 VDC, 360 W

 

 

power output

 

 

 

 

 

 

 

 

 

DC input without IP phone power

24–60 VDC, 12 A

None

 

 

output

 

 

 

 

 

 

 

 

 

Cisco Redundant Power System

100 VAC, 10 A

If supported by router power supply

 

 

 

240 VAC, 6 A

 

 

 

 

 

 

Cisco 3845

 

AC input without IP phone power

100–240 VAC, 5 A

None

 

 

output

 

 

 

 

 

 

 

 

 

AC input with 48 ports of IP phone

100–240 VAC, 9 A

–48 VDC, 360 W

 

 

power output

 

 

 

 

 

 

 

 

 

DC input without IP phone power

24–60 VDC, 19 A

None

 

 

output

 

 

 

 

 

 

 

 

 

Second internal power supply

Any option above

 

 

 

 

 

 

Overview of Cisco 3800 Series Routers

 

OL-5966-01

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Cisco Systems OL-5965-01 warranty Memory, Router Power Option Input IP Phone Power Output

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