CISCO 2921/K9 Router

Cisco 2800 Series

Cisco 2801

Cisco 2811

Cisco 2821

Cisco 2851

Product Architecture

DRAM

• Default: 384 MB

• Maximum: 384 MB

• Default: 512 MB

• Maximum: 768 MB

• Default: 512 MB

• Maximum: 1 GB

Compact Flash

• Default: 128 MB

• Maximum: 128MB

• Default: 128 MB

• Maximum: 256 MB

Fixed USB 1.1 Ports

1

2

Onboard LAN Ports

2-10/100

2-10/100/1000

Onboard AIM (Internal) Slot

2

Interface Card Slots

• 4 slots; 2 slots support HWIC, WIC, VIC, or VWIC type modules

• 1 slot supports WIC, VIC, or VWIC type modules

• 1 slot supports VIC or VWIC type modules

4 slots, each slot can support HWIC, WIC, VIC, or VWIC type modules

Network-Module Slot

No

1 slot, supports NM and NME type modules

1 slot, supports NM, NME and NME-X type modules

1 slot, supports NM, NME, NME-X, NMD and NME-XD type modules

Extension Voice Module Slot

0

1

PVDM (DSP) Slots on Motherboard

2

3

Integrated Hardware-Based Encryption

Yes

VPN Hardware Acceleration (on Motherboard)

DES, 3DES, AES 128, AES 192, and AES 256

Optional Integrated In-Line Power (PoE)

Yes, requires AC-IP power supply

Console Port (up to 115.2 kbps)

1

Auxiliary Port (up to 115.2 kbps)

1

Minimum Cisco IOS Software Release

12.3(8)T

Rack Mounting

Yes, 19-inch

Yes, 19- and 23-in. options

Wall Mounting

No

Yes

No

No

Power Requirements

AC Input Voltage

100 to 240 VAC, autoranging

AC Input Frequency

47-63 Hz

AC Input Current

2A (110V) 1A (230V)

3A (110V) 2A (230V)

AC Input Surge Current

50A maximum, one cycle (-48V power included)

AC-IP Maximum In-Line Power Distribution

120W

160W

240W

360W

AC-IP Input Current

4A (110V) 2A (230V)

8A (110V) 4A (230V)

AC-IP Input Surge Current

50A maximum, one cycle (-48V power included)

DC Input Voltage

No DC Power Option available

24 to 60 VDC, autoranging positive or negative

DC Input Current

• No DC Power Option available

• 8A (24V)

• 3A (60V)

• Startup current 50A<10 ms

• 12A (24V)

• 5A (60V)

• Startup current 50A<10 ms

Typical Power Dissipation

(No Modules)

42W (143 BTU/hr)

32W (109 BTU/hr)

54W (184 BTU/hr)

58W (197 BTU/hr)

Power Dissipation-AC without IP Phone Support

150W (511 BTU/hr)

170W (580 BTU/hr)

280W (955 BTU/hr)

280W (955 BTU/hr)

Power Dissipation-AC without IP Phone Support

150W (511 BTU/hr)

170W (580 BTU/hr)

280W (955 BTU/hr)

280W (955 BTU/hr)

Power Dissipation-AC with IP Phone Support-System Only

150W (511 BTU/hr)

210W (717 BTU/hr)

310W (1058 BTU/hr)

370W (1262 BTU/hr)

Power Dissipation-AC with IP Phone Support-IP Phones

180W (612 BTU/hr)

160W (546 BTU/hr)

240W (819 BTU/hr)

360W (1128 BTU/hr)

Power Dissipation-DC

Not applicable

180W (614 BTU/hr)

300W (1024 BTU/hr)

300W (1024 BTU/hr)

RPS

No

External only, connector for RPS provided by default

Recommended RPS Unit

No RPS option

Cisco RPS-2300 Redundant Power System