The Catalyst 2948G-L3 provides an aggregate throughput of more than 10 Mpps for Layer 3 switching. These data rates apply not only to IP and IPX traffic but also to IP multicast and bridged traffic and are a result of using high-speed application-specific integrated circuit (ASIC) technology on each port to perform true Layer 3 switching. The Catalyst 2948G-L3 supports a high-performance architecture with 22 Gbps bandwidth. The switch fabric is capable of supporting all 48 10/100 ports and two Gigabit uplinks simultaneously at wire speed. The Catalyst 2948G-L3 is housed in a 1.5 rack unit (RU) chassis and can be provisioned with an optional external redundant power supply. It supports a 22 Gbps shared-memory, fully non-blocking switch fabric, high- performance RISC processor that provides the routing intelligence and individual port-based ASICs for the Layer 3 switching. The Catalyst 2948G-L3 uses Cisco Express Forwarding (CEF), which has been developed for the Cisco 12000 series gigabit switch router (GSR), the Catalyst 8500, and the Cisco 7500. This technology provides Layer 3 switching based on a topology map of the entire network that is distributed to each port-based ASIC, allowing it to make autonomous switching decisions without the involvement of a centralized CPU. WS-C2948G-L3 Product Overview Interfaces/Ports Total Number of Network Ports: 48 Number of Network (RJ-45) Ports: 48 Port/Expansion Slot Details: 48 x Fast Ethernet Network Port/Expansion Slot Details: 2 x Gigabit Ethernet Expansion Slot Media & Performance Media Type Supported: Twisted Pair Twisted Pair Cable Standard: Category 5 Ethernet Technology: Fast Ethernet Network Technology: 10Base-T Network Technology: 100Base-TX I/O Expansions Number of Total Expansion Slots: 2 Expansion Slot Type: GBIC Number of GBIC Slots: 2 Management & Protocols Manageable: Yes Management: Management: SNMP Management Information Base (MIB) II Management Capabilities: CiscoWorks 2000 CWSI CiscoView CDP VTP Enhanced SPAN SNMP Telnet Client BOOTP TFTP Memory Standard Memory: 64 MB Flash Memory: 16 MB Power Description Input Voltage: 110 V AC Input Voltage: 220 V AC Power Source: Power Supply Redundant Power Supply: Yes Physical Characteristics Height: 2.7" Width: 17.1" Depth: 18.0" Weight (Approximate): 18.00 lb Miscellaneous Additional Information: Item Included: Cisco IOS cat2948g-L3 BASIC SOFTWARE FOR L3 CATALYST 2948G (SC29Z-12.0.14W) Full Duplex Capabilities: All ports VLAN Maximum: 1024 FEC: Yes ISL: Yes - All Ports 802.1Q: Yes - All Ports Power supply output: 175W; 820 BTU/hour Route Entries: 12,000 minimum 24,000 maximum Certifications & Standards: Standards: IEEE 802.3x full duplex on 10BaseT, 100BaseTX, and 1000BaseX ports IEEE 802.1D Spanning-Tree Protocol IEEE 802.1Q VLAN IEEE 802.3z 1000BaseX specification IEEE 802.3u 100BaseTX specification IEEE 802.3 10BaseT specification 1000BaseX (GBIC) - 1000BaseSX - 1000BaseLX/LH - 1000BaseZX Safety Certifications: UL 1950 CSA 22.2 No. 950 EN 60950 IEC 950 AS/NZS 3260, TS001 CE Electromagnetic Emissions Certifications: FCC Part 15 Class A EN 55022B Class A (CISPR 22 Class A) VCCI Class A AS/NZS 3548 Class A BCIQ CE Marking Y2K compliant Warranty Limited Warranty: 90 Day
