WS-C4948E-S Cisco Catalyst 4948E 48-Port Switch IP Base

Built on the fixed 1RU Catalyst 4948E chassis, this -S model has 48 10/100/1000 RJ-45 ports plus four uplink ports for 1 GbE SFP or 10 GbE SFP+ optics. Its hardware matches the Enterprise Services model; the difference is the IP Base software tier.

Switching capacity is 176 Gbps with a forwarding rate of 131 mpps for IPv4 and 110 mpps for IPv6, and a 17.5 MB shared buffer. The control plane uses a 1 GHz CPU with 1 GB of SDRAM, and the minimum software is Cisco IOS 12.2(54)SG. Table sizes are 55,000 MAC addresses, 57,000 routes, 28,000 multicast routes, 32,000 security and QoS entries and 4,094 VLANs, with 8 ingress and 8 egress SPAN sessions.

IP Base provides static routes, RIPv1, RIPv2 and EIGRP stub routing alongside Layer 2 switching, without BGP, OSPF or IS-IS. Like the other tier, it supports PIM, SSM, Bidir-PIM, IGMP and MLD snooping, up to 8 QoS queues per port, 802.1x, LACP and RMON I and II.

An AC supply is included and the chassis takes two supplies in a 1+1 redundant arrangement, with AC input from 90 to 264 V. Typical consumption is 230 W at 25 C, rising to 275 W at 55 C. The hot-swappable fan tray moves 28 CFM at low speed and 44 CFM at maximum, with front-to-back airflow. The chassis is 1RU at 4.4 x 43.9 x 49.3 cm and weighs 8.62 kg fully loaded or 6.35 kg as a base system. Rated MTBF is 145,422 hours, and operating temperature is 0 to 40 C.

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Related: Cisco 4948 switch parts