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Cisco Catalyst 4900 Series Switches

The Cisco® Catalyst® 4900 Series switches are fixedconfiguration switches offering high-performance, rack-optimized server switching for data centers of all sizes.
Cisco Catalyst 4900 Series Switch
Key Features
• Low-latency and wire-speed switching
• Up to 48 10/100/1000 ports with 4 Small Form-Factor Pluggable (SFP) ports or 48 10/100/1000 ports with two 10 Gigabit Ethernet ports
• Dual, hot-swappable internal AC or DC power supplies
• Hot-swappable fan trays
Key Benefits
Exceptional Reliability—Redundant hot-swappable internal AC or DC power supplies offer nonstop operation; 1 + 1 power supply design provides A-to-B failover when power supplies are connected
to different circuits; AC and DC power supplies can be mixed in the same unit for maximum deployment flexibility; a hot-swappable fan tray with includes redundant fans for additional serviceability and availability.
Wire-Speed Performance—Wire-speed throughput on all ports from 96 Gbps to 136 Gbps with low latency for data-intensive applications; switching performance is maintained regardless of the
number of route entries or Layer 3 and 4 services enabled; hardwarebased Cisco Express Forwarding routing architecture allows for increased scalability and performance.
Layer 2–3 Services—Advanced routing protocols such as Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), Border Gateway Protocol (BGP), static routing,
and Policy Based Routing (PBR) increase network scale; equal-cost routing as well as multicast routing such as Protocol Independent Multicast (PIM) maximize network resources; Virtual Route
Forwarding lite (VRF-lite) secures traffic.
Comprehensive Management—The Catalyst 4900 Series switch can be managed with Cisco Network Assistant, CiscoWorks solutions, and embedded CiscoView; includes a single, dedicated 10/100 console port and a single, dedicated 10/100 management port for offline disaster recovery; remote in-band management is available with Simple Network Management Protocol (SNMP), Telnet client, BOOTP, and Trivial FTP (TFTP); support for local or remote out-of-band management delivered through a terminal or modem attached to the console interface; management port helps enable switch to reload a new image from a TFTP server within seconds.
Security—Dynamic Host Configuration Protocol (DHCP) snooping allows only trusted ports to relay DHCP messages, eliminating rogue DHCP servers; Network Access Control (NAC) prevents the
propagation of costly worms and viruses; Dynamic ARP inspection and IP Source Guard prevent against man-in-the-middle attacks; 802. 1x and identity-based network services allow only authorized persons on the network; port security prevents MAC address flooding attacks. Control Plane Policing prevents DoS attack.
Customers
The Cisco Catalyst 4900 Series solutions are ideal for: • Data center deployments requiring wire-speed, top-of-rack aggregation for servers • Customers who expect resiliency, security, and scalability

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Software Options
Cisco Catalyst 4900 Series switches can be purchased with the IP Base (formerly called SMI) or Enterprise Services (formerly called EMI) licenses, and can be upgraded in the field to Advanced IP
Services licenses.
• The IP Base license offers advanced QoS, rate-limiting, access control lists (ACLs), Internet Group Management Protocol (IGMP) Snooping, and routing functionality such as Routing Information Protocol (RIP), static routing, and EIGRP Stub.
• The Enterprise Services Software license additionally supports OSPF, Intermediate System-to-Intermediate System (IS-IS) Protocol, EIGRP, BGP, AppleTalk, and Internetwork Packet Exchange (IPX) software routing. Also includes all IP Base Image features.

Cisco Catalyst 4900 Series Switches

Part Number Description
WS-C4948 48 10/100/1000 ports + 4 SFP ports with no power supply; optional image
WS-C4948-S 48 10/100/1000 ports + 4 SFP ports with 1 AC power supply; IP Base Image
WS-C4948-E 48 10/100/1000 ports +4 SFP ports with 1 AC power supply; Enterprise Services Image
WS-C4948-10GE 48 10/100/1000 ports + 2 10 Gigabit Ethernet (X2) optic ports with no power supply; optional image
WS-C4948-10GE-S 48 10/100/1000 ports + 2 10 Gigabit Ethernet (X2) optic ports with 1 AC power supply; IP Base Image
WS-C4948-10GE-E 48 10/100/1000 ports + 2 10 Gigabit Ethernet (X2) optic ports with 1 AC power

compares the features of the Cisco Catalyst® 4948 Switch, Catalyst 4948-10GE, Catalyst 4928-10GE, and Catalyst 4900M Switch.
Cisco Catalyst 4900 Series Switches Model Comparison