146 147
Hardware Features
WS-C4948
WS-C4948-
10GE
WS-C4928-
10GE
WS-4900M
WS-C4948-E/
WS-C4948E-F
Environmental
Height 1R U 1RU 1RU 2RU 1RU
Dimension (H x W x D)
Inches (cm)
1.71(4.3) x
17.3(43.9) x
16.1(40.9)
1.71 (4.3) x
17.3 (43.9) x
16.1 (40.9)
1.71 (4.3) x
17.3 (43.9) x
16.1 (40.9)
3.5 (8.9) x
17.2 (43.7) x
17.9 (45.5)
1.75 (4.4) x
17.5 (44.4) x
19.4 (49.3)
Power Redundancy 1+1 AC or DC 1+1 AC or DC 1+1 AC or DC 1+1 AC or DC 1+1 AC or DC
Unit Weight Pounds
(Kilograms)
16.5 (7.48) 16.5 (7.48) 16.5 (7.48) 34.0 lbs (15.4) 19 lbs (8.62)
Hot Swappable Fan Ye s Ye s Yes Ye s Ye s
Avg/Max Power
Consumption
176/300 Watts 212/300 Watts 300 Watts 300/446 Watts 230/275 Watts
Airflow Side to Back Side to back Side to back Side to Back
Front to Back
(4948E)
Rack Mounting Options
Front and Rear
Mount
Front and Rear
Mount
High Perf Rear
Mount
Front and Rear
Mount
Four Post Rack
Side rail Mount
High
Performance
Mount
Front and Rear
Mount
High Perf Rear
Mount
Uplink Optic Types 4 SFP Optics
Two X2
(10 Gigabit
Ethernet)
optics
Two X2
(10 Gigabit
Ethernet)
Optics
Eight X2
(10 Gigabit
Ethernet)
Optics
SFP/SFP+
Cisco TwinGig
Converter Module
Support
No No Ye s
Ye s
(WS-X4908-10
GE only)
No
Cisco OneX Converter
Module Support
(X2 to SFP+)*
No No Ye s Ye s No
Optics
LH, SX, ZX,
CWDM
LR, CX4, LX4,
SR, ER, LRM,
ZR, DWDM
LR, CX4, LX4,
SR, ER, LRM
X2: LR, CX4,
LX4, SR, ER,
LRM, ZR,
DWDM
32
Modular Half-Card
Slots
SFP+: SR
CWDM,
DWDM, SR,
LR, LRM, CX4
0 0 0
Ports
Maximum 10/100/1000
Ports
48 48 0 40 48
Fixed Switches: Cisco Catalyst 4900 Series
These switches are available with either the LAN Base Software image or IP Base
Software image or the Enterprise Services Software image. The Enterprise
Services Software additionally supports Shortest Path First (OSPF), Intermediate
System-to-Intermediate System (IS-IS), Enhanced Interior Gateway Routing Protocol
(EIGRP), and Border Gateway Protocol (BGP).
Hardware Features (continued)
WS-C4948
WS-C4948-
10GE
WS-C4928-
10GE
WS-4900M
WS-C4948-
E/WS-
C4948E-F
Ports (continued)
Maximum Gigabit
Ethernet (Fiber) Ports
4 0 28
32 (Cisco
TwinGig
Converter
Module)
4
Maximum 10 Gigabit
Ethernet (10GBase-T)
Ports
0 0 0 16 0
Maximum 10 Gigabit
Ethernet (fiber) Ports
0 2 (X2) 2 (X2)
1
24 (X2)
1
4 (SFP+)
Performance/Scalability
Switching Capacity 96 Gbps 136 Gbps 96 Gbps 320 Gbps 176 Gbps
Throughput 72 Mpps 102 Mpps 72 Mpps
250 Mpps
for IPv4 125
Mpps for IPv6
131 Mpps
for IPv4 110
Mpps for IPv6
Routes Supported 32K 32K 32K 256K 57K
MAC Addresses 32K 55K 55K 55K 55K
Per VLAN Spanning
Tree (PVST) Protocol
and VLAN IDs
4094 4094 4094 4094 4094
Switched Virtual
Interfaces (SVIs)
2000 2000 2000 4094 4094
Active VLANs 4094 4094 2048 4094 4094
Multicast Routes 28K 28K 28K 28K 28K
Security and Quality-
of-Service (QoS)
Hardware Entries
32K 32K 32K 128K 32K
Switched Port Analyzer
(SPAN)
2 Ingress and
4 Egress
2 Ingress and
4 Egress
2 Ingress and
4 Egress
8 Ingress and
8 Egress
8 Ingress and
8 Egress
Shared Buffer 16 MB 16 MB 16 MB 17.5 MB 17.5 MB
CPU 266 MHz
666 MHz
666 MHz
1.3 GHz 1 GHz
Synchronous Dynamic
RAM (SDRAM)
256 MB 256 MB 256 MB 512 MB 1 GB
IPv6 Support
Software
Switched
Software
Switched
Software
Switched
Hardware
Switched
Hardware
Switched
USB Port No No No Yes No
Compact Flash
Memory Support
No No No Ye s No
System Reset Button No No Ye s Ye s Yes
PoE: Max. 802.3af Class
3 Devices (15.4W)
0 0 0 0 0
PoE: Max. 802.3af Class
2 Devices (7.3W)
0 0 0 0 0
*
X2 can be converted to SFP+ using OneX Converter Module.
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