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- Description
- Specifications
IP Base is the image on the WS-C4948-S, a Cisco Catalyst 4948 1RU switch with 48 10/100/1000BASE-T ports, one AC power supply and a fan tray. The IP Base image is the standard Layer 3 option, covering RIPv1, RIPv2, static routes and EIGRP stub. Front-panel connectivity is 52 physical ports, the 48 copper ports and 4 SFP slots, and up to 48 of them can be active at one time in any combination.
A 96 Gbps switching fabric forwards 72 mpps in hardware, and the switch keeps 32,000 MAC addresses, 4096 active VLANs, 32,000 security and QoS hardware entries and a 16 MB shared buffer. Its 266 MHz CPU works with 256 MB of SDRAM. Width is 17.290 in. (43.92 cm), depth is 16.14 in. (41.00 cm), and with one power supply fitted it weighs 16.5 lb (7.48 kg). Only Cisco IOS Software runs on it, Release 12.2(20)EWA or later.
The 300 W AC or DC supplies are internal, hot-swappable and redundant 1+1, with average power use of 176 W and heat dissipation of 1023 BTU/hr each. SFP slots take Gigabit Ethernet LH, SX, ZX and 10/100/1000BASE-T SFPs along with CWDM SFPs. For the fan tray with four redundant fans, the spare is the WS-X4991, and other fixed-port Catalyst units are in the Cisco switch category.
| Part number | WS-C4948-S |
| Model | Cisco Catalyst 4948 |
| Software image | IP Base |
| Supplied with | One AC power supply and fan tray |
| Ports | 48 x 10/100/1000BASE-T and 4 x SFP (up to 48 active at once) |
| Height | 1RU, fixed configuration |
| Switching capacity | 96 Gbps |
| Forwarding rate | 72 mpps |
| MAC addresses | 32,000 |
| Active VLANs | 4096 |
| Shared buffer | 16 MB |
| CPU and SDRAM | 266 MHz, 256 MB |
| Power supplies | 300 W AC or DC, 1+1 hot-swappable; average power use 176 W |
| Dimensions (W x D) | 17.290 x 16.14 in. (43.92 x 41.00 cm) |
| Weight | 16.5 lb (7.48 kg) with one power supply |
| Minimum software | Cisco IOS Software Release 12.2(20)EWA or later |
| Compatible with | Gigabit Ethernet SFPs (LH, SX, ZX, 10/100/1000BASE-T) and CWDM SFPs; fan tray WS-X4991= |