Feature and Description |
Cisco Catalyst 4948 Switch |
Cisco Catalyst 4948 10 Gigabit Ethernet Switch |
Cisco Catalyst 4900M Switch |
Cisco Catalyst 4948E and 4948E-F Switches |
Environmental |
Height |
1RU |
1RU |
2RU |
1RU |
Dimensions (H x W x D) |
1.71 x 17.3 x 16.1 in. (4.3 x 43.9 x 40.9 cm) |
1.71 x 17.3 x 16.1 in. (4.3 x 43.9 x 40.9 cm) |
3.5 x 17.2 x 17.9 in. (8.9 x 43.7 x 45.5 cm) |
1.75 x 17.5 x 19.4 in. (4.4 x 44.4 x 49.3 cm) |
Power redundancy |
1+1 AC or DC |
1+1 AC or DC |
1+1 AC or DC |
1+1 AC or DC |
Unit weight |
16.5 lb (7.48 kg) |
16.5 lb (7.48 kg) |
34.0 lb (15.4 kg) |
19 lb (8.62 kg) |
Hot-swappable fan |
Yes |
Yes |
Yes |
Yes |
Average and maximum power consumption (in watts [W]) |
176W average
300W maximum |
212W average
300W maximum |
300W average
446W maximum |
230W average
275W maximum |
Airflow |
Side to back |
Side to back |
Side to back |
Front to back (Cisco Catalyst 4948E)
Back to front (Cisco Catalyst 4948E-F) |
Rack-mounting options |
Front and rear mount |
Front and rear mount
High-performance rear mount |
Four-post rack-side rail mount
High-performance mount |
Front and rear mount
High-performance rear mount |
Uplink optic types |
Four Small Form-Factor Pluggable (SFP) optics |
Two X2 (10 Gigabit Ethernet) optics |
Eight X2 (10 Gigabit Ethernet) optics |
SFP and SFP+ |
Cisco® TwinGig Converter Module support |
No |
No |
Yes (WS-X4908-10GE only) |
No |
Cisco OneX Converter Module support (X2 to SFP+) |
No |
No |
Yes |
No |
Optics |
LH, SX, ZX, and CWDM |
LR, CX4, LX4, SR, ER, LRM, ZR, and DWDM |
X2: LR, CX4, LX4, SR, ER, LRM, ZR, and DWDM
SFP+: SR |
CWDM, DWDM, SR, LR, LRM, and CX4 |
Modular half-card slots |
0 |
0 |
2 |
0 |
Ports |
Maximum 10/100/1000-Gbps ports |
48 |
48 |
40 |
48 |
Maximum Gigabit Ethernet (fiber) ports |
4 |
0 |
32 (Cisco TwinGig Converter Module) |
4 |
Maximum 10 Gigabit Ethernet (10GBASE-T) ports |
0 |
0 |
16 |
0 |
Maximum 10 Gigabit Ethernet (fiber) ports |
0 |
2 (X2) |
24 (X2)* |
4 (SFP+) |
Performance and Scalability |
Switching capacity |
96 Gbps |
136 Gbps |
320 Gbps |
176 Gbps |
Throughput |
72 million packets per second (mpps) |
102 mpps |
250 mpps for IPv4
125 mpps for IPv6 |
131 mpps for IPv4
110 mpps for IPv6 |
Routes supported |
32,000 |
32,000 |
256,000 |
57,000 |
MAC addresses |
32,000 |
55,000 |
55,000 |
55,000 |
Per-VLAN Spanning Tree (PVST) Protocol and VLAN IDs |
4094 |
4094 |
4094 |
4094 |
Spanning Tree Protocol instances |
4094 |
4094 |
4094 |
4094 |
Switched virtual interfaces (SVIs) |
2000 |
2000 |
4094 |
4094 |
Active VLANs |
4094 |
4094 |
4094 |
4094 |
Multicast routes |
28,000 |
28,000 |
28,000 |
28,000 |
Security and quality-of-service (QoS) hardware entries |
32,000 |
32,000 |
128,000 |
32,000 |
Switched Port Analyzer (SPAN) |
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 |
17.5 MB |
17.5 MB |
CPU |
266 MHz |
666 MHz |
1.3 GHz |
1 GHz |
Synchronous dynamic RAM (SDRAM) |
256 MB |
256 MB |
512 MB |
1 GB |
Multilayer switching |
LAN Base, IP Base, and Enterprise Services options |
LAN Base, IP Base, and Enterprise Services options |
LAN Base, IP Base, and Enterprise Services options |
LAN Base, IP Base, and Enterprise Services options |
IPv6 support |
Software switched |
Software switched |
Hardware switched |
Hardware switched |
USB port |
No |
No |
Yes |
No |
Compact flash memory support |
No |
No |
Yes |
No |
System reset button |
No |
No |
Yes |
Yes |
Minimum software requirements |
Cisco IOS® Software Release 12.2(20)EWA or later |
Cisco IOS Software Release 12.2(25)EWA or later |
Cisco IOS Software Release 12.2(46)SG or later |
Cisco IOS Software Release 12.2(54)SG or later (Cisco Catalyst 4948E)
Cisco IOS Software Release 12.2(54)WO or later (Cisco Catalyst 4948E-F) |