|
Cisco 2901
|
Cisco 2911
|
Cisco 2921
|
Cisco 2951
|
Services and Slot Density
|
Embedded Hardware-Based Cryptography and Acceleration
|
Yes
|
Yes
|
Yes
|
Yes
|
Cisco Unified SRST Sessions
|
35
|
50
|
100
|
250
|
Cisco Unified CCME Sessions
|
35
|
50
|
100
|
150
|
Total Onboard WAN 10/100/1000 Ports
|
2
|
3
|
3
|
3
|
RJ-45-Based Ports
|
2
|
3
|
3
|
3
|
SFP-Based Ports (use of SFP port disables the corresponding RJ-45 port)
|
0
|
0
|
1
|
1
|
Service Module Slots
|
0
|
1
|
1
|
2
|
Double-Wide Service Module Slots (use of a double-wide slot will occupy all single-wide service module slots in a 2900)
|
0
|
0
|
1
|
1
|
EHWIC Slots
|
4
|
4
|
4
|
4
|
Double-Wide EHWIC Slots (use of a double-wide EHWIC slot will consume two EHWIC slots)
|
2
|
2
|
2
|
2
|
ISM Slots
|
1
|
1
|
1
|
1
|
Onboard DSP (PVDM) Slots
|
2
|
2
|
3
|
3
|
Memory DDR2 ECC DRAM - Default
|
512 MB
|
512 MB
|
512 MB
|
512 MB
|
Memory (DDR2 ECC DRAM) - Maximum
|
2 GB
|
2 GB
|
2 GB
|
2 GB
|
Compact Flash (External) - Default
|
slot 0: 256 MB
slot 1: none
|
slot 0: 256 MB
slot 1: none
|
slot 0: 256 MB
slot 1: none
|
slot 0: 256 MB
slot 1: none
|
Compact Flash (External) - Maximum
|
slot 0: 4 GB
slot 1: 4 GB
|
slot 0: 4 GB
slot 1: 4 GB
|
slot 0: 4 GB
slot 1: 4 GB
|
slot 0: 4 GB
slot 1: 4 GB
|
External USB 2.0 Flash Memory Slots (Type A)
|
2
|
2
|
2
|
2
|
USB Console Port (Type B) (up to 115.2 kbps)
|
1
|
1
|
1
|
1
|
Serial Console Port
|
1
|
1
|
1
|
1
|
Serial Auxiliary Port
|
1
|
1
|
1
|
1
|
Power-Supply Options
|
AC and PoE
|
AC, PoE, and DC
|
AC, PoE, and DC
|
AC, PoE, and DC
|
RPS Support (External)
|
No
|
Cisco RPS 2300
|
Cisco RPS 2300
|
Cisco RPS 2300
|
Power Specifications
|
AC Input Voltage
|
100 to 240 VAC auto ranging
|
100 to 240 VAC auto ranging
|
100 to 240 VAC auto ranging
|
100 to 240 VAC auto ranging
|
AC Input Frequency
|
47 to 63 Hz
|
47 to 63 Hz
|
47 to 63 Hz
|
47 to 63 Hz
|
AC Input Current Range AC Power Supply (Maximum)
|
1.5 to 0.6A
|
2.2 to 1.0A
|
3.4 to 1.4A
|
3.4 to 1.4A
|
AC Input Surge Current
|
<50A
|
<50A
|
<50A
|
<50A
|
Typical Power (No Modules) (Watts)
|
40
|
50
|
60
|
70
|
Maximum Power with AC Power Supply (Watts)
|
150
|
210
|
320
|
340
|
Maximum Power with PoE Power Supply (Platform Only) (Watts)
|
175
|
250
|
370
|
405
|
Maximum End-Point PoE Power Available from PoE Power Supply (Watts)
|
130
|
200
|
280
|
370
|
Maximum End-Point PoE Power Capacity with PoE Boost (Watts)
|
N/A
|
750
|
750
|
750
|
DC Input Voltage
|
N/A
|
24 to 60 Vdc, autoranging positive or negative
|
24 to 60 Vdc, autoranging positive or negative
|
24 to 60 Vdc, autoranging positive or negative
|
DC Input Current
|
N/A
|
(MAX) 8A (24V)
3.5A (60V)
|
(MAX) 12A (24V)
5A (60V)
|
(MAX) 12A (24V)
5A (60V)
|
Physical Specifications
|
Dimensions (H x W x D)
|
1.75 x 17.25 x 17.3 in. (44.5 x 438.2 x 439.4 mm)
|
3.5 x 17.25 x 12 in. (88.9 x 438.2 x 304.8 mm)
|
3.5 x 17.25 x 18.5 in. (88.9 x 438.2 x 469.9 mm)
|
3.5 x 17.25 x 18.5 in. (88.9 x 438.2 x 469.9 mm)
|
Rack Height
|
1RU (rack unit)
|
2RU
|
2RU
|
2RU
|
Rack-Mount 19 in. (48.3 cm) EIA
|
Included
|
Included
|
Included
|
Included
|
Rack-Mount 23 in. (58.4 cm) EIA
|
Optional
|
Optional
|
Optional
|
Optional
|
Wall-Mount (refer to installation guide for approved orientation)
|
Yes
|
Yes
|
No
|
No
|
Weight with AC Power Supply (No Modules)
|
13.4 lb (6.1 kg)
|
18 lb (8.2 kg)
|
29 lb (13.2 kg)
|
29 lb (13.2 kg)
|
Weight with AC PoE Power Supply (No Modules)
|
14.3 lb (6.5 kg)
|
19 lb (8.6 kg)
|
30 lb (13.6 kg)
|
30 lb (13.6 kg)
|
Typical Weight Fully Configured
|
16 lb (7.3 kg)
|
21 lb (9.5 kg)
|
34 lb (15.5 kg)
|
34 lb (15.5 kg)
|
Airflow
|
Front to side
|
Side to side
|
Back and Side to Front
|
Back and Side to Front
|
Optional Airflow Kit
|
N/A
|
Front to back
|
N/A
|
N/A
|
Environmental Specifications
|
Operating Conditions
|
Temperature: 5,906 feet (1,800m) Maximum Altitude
|
32 to 104ºF (0 to 40ºC)
|
32 to 104ºF (0 to 40ºC)
|
32 to 104ºF (0 to 40ºC)
|
32 to 104ºF (0 to 40ºC)
|
Temperature: 9,843 feet (3,000m ) Maximum Altitude
|
32 to 77ºF (0 to 25ºC)
|
32 to 104ºF (0 to 40ºC)
|
32 to 104ºF (0 to 40ºC)
|
32 to 104ºF (0 to 40ºC)
|
Temperature: 13,123 feet (4,000m) Maximum Altitude
|
N/A
|
32 to 86ºF (0 to 30ºC)
|
32 to 86ºF (0 to 30ºC)
|
32 to 86ºF (0 to 30ºC)
|
Temperature: Short-Term (per NEBS) 5906 feet (1,800m) Maximum Altitude
|
N/A
|
23°F to 122°F (-5 to 50°C)
|
N/A
|
23°F to 122°F (-5 to 50°C)
|
Altitude
|
10,000 ft (3,000m)
|
13,000 ft (4,000m)
|
10,000 ft (3,000m)
|
13,000 ft (4,000m)
|
Relative Humidity
|
10 to 85%
|
5 to 85%
|
10 to 85%
|
5 to 85%
|
Short-Term (per NEBS) Humidity
|
N/A
|
5% to 90%, but not to exceed 0.024 kg water/kg of dry air
|
N/A
|
N/A
|
Acoustic: Sound Pressure (Typical/Maximum)
|
41/53 dBA
|
51.8/62.9 dBA
|
54.4/67.4 dBA
|
54.4/67.4 dBA
|
Acoustic: Sound Power (Typical/Maximum)
|
49/61 dBA
|
58.5/70.3 dBA
|
62.6/74.5 dBA
|
62.6/74.5 dBA
|
Non-Operating Conditions
|
Temperature
|
-40 to 158ºF (-40 to 70ºC)
|
-40 to 176ºF (-40 to 80ºC)
|
-40 to 158ºF (-40 to 70ºC)
|
-40 to 158ºF (-40 to 70ºC)
|
Relative Humidity
|
5 to 95%
|
5 to 95%
|
5 to 95%
|
5 to 95%
|
Altitude
|
15,000 ft (4,570m)
|
15,000 ft (4,570m)
|
15,000 ft (4,570m)
|
15,000 ft (4,570m)
|
Regulatory Compliance
|
Safety
|
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1
|
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1
|
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1
|
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1
|
EMC
|
47 CFR, Part 15
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZS 3548 Class A
VCCI V-3
CNS 13438
EN 300-386
EN 61000 (Immunity)
EN 55024, CISPR 24
EN50082-1
|
47 CFR, Part 15
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZS 3548 Class A
VCCI V-3
CNS 13438
EN 300-386
EN 61000 (Immunity)
EN 55024, CISPR 24
EN50082-1
|
47 CFR, Part 15
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZS 3548 Class A
VCCI V-3
CNS 13438
EN 300-386
EN 61000 (Immunity)
EN 55024, CISPR 24
EN50082-1
|
47 CFR, Part 15
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZS 3548 Class A
VCCI V-3
CNS 13438
EN 300-386
EN 61000 (Immunity)
EN 55024, CISPR 24
EN50082-1
|
Telecom
|
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive
|
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive
|
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive
|
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive
|