View source for Catalyst 2940 Desktop, 2955 Industrial Ethernet Series, 2948G-GE-TX

'''Catalyst 2940 Desktop, 2955 Industrial Ethernet Series, 2948G-GE-TX'''
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{| border = "1"
||'''Feature'''
|align="center"|'''WS-C2940-8TT / WS-C2940-8TT-S'''
|align="center"|'''WS-C2940-8TF / WS-C2940-8TF-S'''
|align="center"|'''WS-C2955T-12 '''
|align="center"|'''WS-C2955C-12'''
|align="center"|'''WS-C2955S-12'''
|align="center"|'''WS-C2948G-GE-TX'''
|-
||'''Form Factor'''
|align="center"| Desktop 
|align="center"| Desktop 
|align="center"|Special (see Dimensions, below) 
|align="center"| Special (see Dimensions, below)
|align="center"| Special (see Dimensions, below)
|align="center"|1RU
|-
||'''[[Switch Fabric]]'''
|align="center"|3.2Gbps 
|align="center"|3.2Gbps
|align="center"| 13.6Mbps
|align="center"| 13.6Mbps 
|align="center"|13.6Mbps
|align="center"| 20Gbps
|-
||'''[[Forwarding Rate]]'''
|align="center"| 2.7Mpps 
|align="center"|2.7Mpps 
|align="center"|4.8Mpps 
|align="center"|2.0Mpps 
|align="center"|2.0Mpps
|align="center"| 29.76Mpps
|-
||'''10/100 Ports (RJ-45)'''
|align="center"|8
|align="center"|8
|align="center"|12
|align="center"|12
|align="center"|12
|align="center"|0
|-
||'''10/100/1000 (RJ-45)'''
|align="center"|1
|align="center"|0
|align="center"|2
|align="center"|0
|align="center"|0
|align="center"|48
|-
||'''100M MM Fiber (MTRJ) '''
|align="center"|0
|align="center"|1
|align="center"|0
|align="center"|2
|align="center"|0
|align="center"|0
|-
||'''100M SM Fiber (LC) '''
|align="center"|0
|align="center"|0
|align="center"|0
|align="center"|0
|align="center"|2
|align="center"|0
|-
||'''SFP GE Ports '''
|align="center"|0
|align="center"|1
|align="center"|0
|align="center"|0
|align="center"|0
|align="center"|4
|-
||'''External Relay Ports'''
|align="center"|N/A
|align="center"| N/A
|align="center"|2
|align="center"| 2
|align="center"| 2
|align="center"|0
|-
||'''VLAN Trunking '''
|align="center"|802.1q, 4 max. 
|align="center"| 802.1q, 4 max.
|align="center"|VLAN's 802.1q
|align="center"|VLAN's 802.1q 
|align="center"| VLAN's 802.1q
|align="center"| VLAN's 802.1q
|-
||'''EtherChannel '''
|align="center"|All Ports
|align="center"| All Ports
|align="center"| All Ports
|align="center"| All Ports
|align="center"| All Ports
|align="center"| All Ports
|-
||'''Voice-VLAN's'''
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|-
||'''Multi-VLAN Capable'''
|align="center"| No
|align="center"| No
|align="center"| No
|align="center"| No
|align="center"| No
|align="center"| No
|-
||'''[[Max. MAC Addresses]]'''
|align="center"|8000
|align="center"| 8000
|align="center"| 8000
|align="center"| 8000
|align="center"| 8000
|align="center"|16000
|-
||'''[[Max. MTU]] '''
|align="center"|1500 Bytes
|align="center"| 1500 Bytes
|align="center"| 1500 Bytes
|align="center"| 1500 Bytes
|align="center"| 1500 Bytes
|| 1522 Bytes
|-
||'''[[Multicast]]'''
|align="center"| IGMP Snooping in hardware (255 groups, max)
|align="center"| IGMP Snooping in hardware (255 groups, max)
|align="center"| IGMP Snooping in hardware (255 groups, max)
|align="center"| IGMP Snooping in hardware (255 groups, max)
|align="center"| IGMP Snooping in hardware (255 groups, max)
|align="center"| IGMP Snooping in hardware (255 groups, max)
|-
||'''Ingress Policing'''
|align="center"| None
|align="center"| None
|align="center"|6 policers per 10/100/100FX port, 60 policers per 1000 port
|align="center"| 6 policers per 10/100/100FX port, 60 policers per 1000 port
|align="center"| 6 policers per 10/100/100FX port, 60 policers per 1000 port
||N/A
|-
||'''Queues per port'''
|align="center"|4
|align="center"| 4
|align="center"| 4
|align="center"| 4
|align="center"| 4
||2
|-
||'''QoS Granularity'''
|align="center"| N/A 
|align="center"| N/A
|align="center"|1Mbps (10/100/100FX ports), 8Mbps (1000 ports)
|align="center"| 1Mbps (10/100/100FX ports), 8Mbps (1000 ports)
|align="center"| 1Mbps (10/100/100FX ports), 8Mbps (1000 ports)
|| N/A
|-
||'''DSCP/CoS Remark.'''
|align="center"| No
|align="center"| No
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|align="center"| Yes
|-
||'''Heat (W), Max. '''
|align="center"|15
|align="center"| 15
|align="center"|23
|align="center"| 23
|align="center"| 23
|align="center"|130
|-
||'''Heat (BTU), Max. '''
|align="center"|50
|align="center"| 50
|align="center"|102
|align="center"| 102
|align="center"| 102
|align="center"|445
|-
||'''Dimensions (H/W/D)'''
|align="center"|1.55 x 10.6 x 6.42 in. (3.94 x 26.92 x 16.3 cm)
|align="center"| 1.55 x 10.6 x 6.42 in. (3.94 x 26.92 x 16.3 cm)
|align="center"|3.75 x 8.07 x 5.03 in. (9.52 x 20.5 x 12.77 cm)
|align="center"| 3.75 x 8.07 x 5.03 in. (9.52 x 20.5 x 12.77 cm)
|align="center"| 3.75 x 8.07 x 5.03 in. (9.52 x 20.5 x 12.77 cm)
||1.73 x 17.5 x 17 in (4.39 x 44.5 x 43.1 cm)
|-
||'''Operating Temp. '''
||32 to 113°F (0 to 45°C)
|| 32 to 113°F (0 to 45°C)
|align="center"|-40 to 140°F (-40 to 60°C)
|align="center"| -40 to 140°F (-40 to 60°C
|align="center"| -40 to 140°F (-40 to 60°C
|| 32 to 113°F (0 to 45°C)
|-
||'''Storage Temp.'''
|align="center"| -13 to 158°F (-25 to 70°C)
|align="center"| -13 to 158°F (-25 to 70°C)
|align="center"|-40 to 185°F (-40 to 85°C)
|align="center"| -40 to 185°F (-40 to 85°C)
|align="center"| -40 to 185°F (-40 to 85°C)
|| -13 to 158°F (-25 to 70°C)
|-
||'''Relative Humidity '''
|align="center"|10 to 85% (noncondensing)
|align="center"| 10 to 85% (noncondensing)
|align="center"|10 to 95% (noncondensing)
|align="center"| 10 to 95% (noncondensing)
|align="center"| 10 to 95% (noncondensing)
|| 10 to 85% (noncondensing)
|-
||'''Shock'''
|| N/A 
|| N/A
|align="center"|50 g at 11ms
|align="center"| 50 g at 11ms
|align="center"| 50 g at 11ms
|| N/A
|-
||'''Vibration'''
|| N/A
|| N/A
|align="center"|500Hz (meets or exceeds MIL-STD-810, Method 514.4)
|align="center"| 500Hz (meets or exceeds MIL-STD-810, Method 514.4)
|align="center"| 500Hz (meets or exceeds MIL-STD-810, Method 514.4)
||N/A
|-
||'''Operating Altitude '''
|align="center"|Up to 10,000 ft (3000 m)
|align="center"| Up to 10,000 ft (3000 m)
|align="center"| Up to 10,000 ft (3000 m)
|align="center"| Up to 10,000 ft (3000 m)
|align="center"| Up to 10,000 ft (3000 m)
|align="center"| Up to 10,000 ft (3000 m)
|-
||'''Storage Altitude '''
|align="center"|Up to 15,000 ft (4570 m)
|align="center"|Up to 15,000 ft (4570 m) 
|align="center"|Up to 30,000 ft (9000 m)
|align="center"| Up to 30,000 ft (9000 m)
|align="center"| Up to 30,000 ft (9000 m)
|| Up to 15,000 ft (4570 m)
|-
||'''Weight '''
|align="center"|3 lb (1.36 Kg)
|align="center"| 3 lb (1.36 Kg)
|align="center"| 3.1 lbs (1.41 Kg)
|align="center"| 3.1 lbs (1.41 Kg)
|align="center"| 3.1 lbs (1.41 Kg)
|| 13 lb (5.9kg)
|-
||'''DC Power Req's'''
|align="center"| N/A 
|align="center"| N/A
|align="center"|24 V (18 V minimum to 32 V maximum range)
|align="center"| 24 V (18 V minimum to 32 V maximum range)
|align="center"| 24 V (18 V minimum to 32 V maximum range)
|| N/A
|-
||'''[[MTBF]] (Hours)'''
|align="center"|771
|align="center"|636
|align="center"|235,022
|align="center"|206,378
|align="center"|205,115
|align="center"|146,28
|-
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