Cisco Catalyst 4948 Switch 48 Ports Managed Rack-Mountable

Main Specifications: Device Type Switch - 48 ports - Managed Enclosure Type Rack-mountable 1U Interfaces Gigabit Ethernet Ports 48 x 10/100/1000 + 4 x shared SFP MAC Address Table Size 32K entries Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTPS Compliant Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s Power Redundancy Yes Dimensions (WxDxH) 43.9 cm x 41 cm x 4.4 cm Weight 7.5 kg Manufacturer Warranty 1 year warranty   General Device Type Switch - 48 ports - Managed Enclosure Type Rack-mountable - 1U Interfaces Gigabit Ethernet Ports 48 x 10/100/1000 + 4 x shared SFP MAC Address Table Size 32K entries Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTPS Authentication Method Secure Shell (SSH), RADIUS, TACACS+, Secure Shell v.2 (SSH2) Features Layer 2 switching, DHCP support, auto-negotiation, BOOTP support, ARP support, trunking, Cisco Fast EtherChannel, VLAN support, Cisco Gigabit EtherChannel , IGMP snooping, Syslog support, manageable, MAC address filtering, Trivial File Transfer Protocol (TFTP) support Compliant Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s Processor 1 : 266 MHz RAM 256 MB - SDRAM Flash Memory 64 MB Flash Status Indicators Link activity, power, system, status Expansion / Connectivity Interfaces 48 x 1000Base-T - RJ-451 x 100Base-TX - RJ-45 - management1 x console - RJ-45 - management4 x SFP (mini-GBIC) Power Power Device Internal power supply - hot-plug Installed Qty 0 (installed) / 2 (max) Power Redundancy Yes Miscellaneous Compliant Standards NEBS level 3, ETSI, CISPR 22 Class A, EN 60950, EN 61000-3-2, IEC 825-1/EN 60825-1 class 1, VCCI Class A ITE, IEC 60950, EN 61000-3-3, EN55024, EN55022 Class A, UL 60950, EN50082-1, CSA 22.2 No. 60950, AS/NZS 60950-1, FCC Part 15, ICES-003 Class A, AS/NZS 3548 Dimensions & Weight Width 43.9 cm Depth 41 cm Height 4.4 cm Weight 7.5 kg Manufacturer Warranty Service & Support 1 year warranty Service & Support Details Limited warranty - 1 year Environmental Parameters Min Operating Temperature 0 °C Max Operating Temperature 40 °C Humidity Range Operating 10 - 90% Brief Overview Catalyst 4948 Series 48 ports Rack-mountable 1U Gigabit Ethernet SDRAM RJ-45 32K entries Cisco Catalyst 4948 is a wire-speed, low latency, 48-port 10/100/1000 Ethernet, Layer 2-4, 1-rack-unit (RU), fixed-arrangement switch for rack-enhanced server-switching uses from Cisco Catalyst 4900 series. The Cisco Catalyst 4948 Switch provide excellent support and dependability for Layer 2 and Layer 3 server switching arrangements for business, organisations and small and medium-sized (SMB) businesses. The Cisco Catalyst 4948 provides wire-speed quantity with small inactivity for information-exhaustive uses by means of a 96 Gbps switching fabric with a 72 Mpps accelerating rate in hardware for Layer 2-4 circulation. The product has 48 x Gigabit Ethernet Network and 4 x Fast Ethernet Expansion Slot. Cisco Catalyst 4948 Series Overview: The Cisco Catalyst 4948 Switch is a wire-speed, low-latency, Layer 2 to 4, 1-rack-unit (1RU), fixed-configuration switch for rack-optimized server switching. Based on the proven Cisco Catalyst 4500 Series hardware and software architecture, the Cisco Catalyst 4948 offers exceptional performance and reliability for low-density, multilayer aggregation of high-performance servers and workstations. High performance and scalability of intelligent network services is made possible with dedicated specialized resources known as ternary content addressable memory (TCAM). Ample TCAM resources (64,000 entries) enable high feature capacity, providing wire-speed routing and switching performance with concurrent provisioning of services such as quality of service (QoS) and security, and helping ensure scalability for today's network requirements with ample room for future growth. The Cisco Catalyst 4948 offers 48 ports of wire-speed 10/100/1000BASE-T with four alternative wired ports that can accommodate optional 1000BASE-X Small Form-Factor Pluggable (SFP) optics.   Features and Benefits The Cisco Catalyst 4948 delivers wire-speed throughput with low latency for data-intensive applications, using a 96-Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. Switching performance remains high regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance.   Power Supply Redundancy for Nonstop Operation The Cisco Catalyst 4948 provides reliability for critical applications, with 1+1 redundant hot-swappable internal AC or DC power supplies. The 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 outstanding deployment flexibility. The Cisco Catalyst 4948 also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability. Wire-Speed Performance for 10/100/1000 Connectivity The Cisco Catalyst 4948 delivers wire-speed throughput with low latency for data-intensive applications, using a 96-Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. Switching performance remains high regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance. Power Supply Redundancy for Nonstop Operation The Cisco Catalyst 4948 provides reliability for critical applications, with 1+1 redundant hot-swappable internal AC or DC power supplies. The 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 outstanding deployment flexibility. The Cisco Catalyst 4948 also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability. Comprehensive Management The Cisco Catalyst 4948 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 the Simple Network Management Protocol (SNMP), Telnet client, Bootstrap Protocol (BOOTP), and Trivial File Transfer Protocol (TFTP). Support for local or remote out-of-band management is delivered through a terminal or modem attached to the console interface. The management port helps enable the Cisco Catalyst 4948 to reload a new image from a TFTP server within seconds. The Cisco Catalyst 4948 delivers a comprehensive set of management tools to provide the visibility and control required for server switching. Managed with CiscoWorks solutions and embedded CiscoWorks CiscoView, the Cisco Catalyst 4948 can be configured and managed to deliver device, VLAN, traffic, and policy management. These web-based management tools offer numerous services, including software deployment and quick isolation of error conditions. Performance and Switching 96 Gbps nonblocking switch fabric 72 mpps Layer 2 forwarding (hardware) 72 mpps Layer 3 and 4 forwarding: IP routing and Cisco Express Forwarding (hardware) Layer 2 to 4 hardware-based switch engine (application-specific integrated circuit [ASIC]-based) Support for 4096 active VLANs and 4096 VLAN IDs per switch Layer 2 multicast addresses: 16,384 MAC addresses: 32,768 Policers: 512 ingress and 512 egress Access control list (ACL) and QoS entries: 32,000 Uplinks: 4 alternatively wired SFP ports with Cisco Gigabit EtherChannel support Latency: 6 microseconds for 64-byte packets Spanning Tree Protocol instances: 1500 Internet Group Management Protocol (IGMP) snooping entries: 16,000 Layer 2 Features Layer 2 hardware forwarding at 72 mpps Layer 2 switch ports and VLAN trunks IEEE 802.1Q VLAN encapsulation Inter-Switch Link (ISL) VLAN encapsulation Dynamic Trunking Protocol (DTP) VLAN Trunking Protocol (VTP) and VTP domains PVST+ and Per-VLAN Rapid Spanning Tree Protocol (PVRST) Flexlink Spanning Tree PortFast and PortFast Guard Spanning Tree UplinkFast and BackboneFast IEEE 802.1s IEEE 802.1w IEEE 802.3ad Spanning Tree Root Guard IGMPv1, v2, and v3 Cisco EtherChannel technology, Cisco Fast EtherChannel technology, and Cisco Gigabit EtherChannel technology support Port Aggregation Protocol (PAgP) Link Aggregation Control Protocol (LACP) Unidirectional Link Detection Protocol (UDLD) and aggressive UDLD on the SFP ports IEEE 802.1 Q-in-Q in hardware Layer 2 protocol tunneling Jumbo frames on all ports (up to 9216 bytes) Unidirectional Ethernet Hardware-based storm control (formerly known as broadcast and multicast suppression) Community private VLANs (PVLANs) Forced 10/100 autonegotiation Web Cache Communication Protocol (WCCP) Version 2 Layer 2 redirect Layer 2 promiscuous trunk over trunk port (L2PT) Class-of-service (CoS) mutation Layer 3 Features Jumbo frames on all ports (up to 9216 bytes) Hardware-based IP Cisco Express Forwarding routing at 72 mpps Static IP routing IP routing protocols: EIGRP, OSPF, RIP, and RIPv2 BGPv4 and Multicast Border Gateway Protocol (MBGP) Nonstop Forwarding (NSF) awareness Hot Standby Router Protocol (HSRP) v1 and v2 Software routing of IPX and AppleTalk IS-IS routing protocol IGMPv1, v2, and v3 IGMP filtering on access and trunk ports IP multicast routing protocols: Protocol Independent Multicast (PIM), Source-Specific Multicast (SSM), and Distance Vector Multicast Routing Protocol (DVMRP) Auto rendezvous point (Auto-RP) Distance Vector Multicast Routing Protocol (DVMRP) Pragmatic General Multicast (PGM) Cisco Group Management Protocol (GMP) server Full Internet Control Message Protocol (ICMP) support ICMP Router Discovery Protocol Policy-based routing (PBR) Virtual Route Forwarding lite (VRF-lite) VRF-aware IP services OSPF fast convergence OSPF and EIGRP fast-convergence protection EIGRP stub Virtual Router Redundancy Protocol (VRRP) Nonstop Forwarding (NSF) awareness WCCPv2 Gateway Load Balancing Protocol (GLBP) High-Availability Features 1+1 hot-swappable AC or DC power supplies Hot-swappable field-replaceable fan tray with redundant fans HSRP v1 and v2 VRRP Cisco IOS Embedded Event Manager (EEM) Cisco Generic Online Diagnostics (GOLD) Smart Call Home Sophisticated QoS and Traffic Management Per-port QoS configuration Per-port and per-VLAN QoS Support for four queues per port in hardware Strict priority queuing IP differentiated services code point (DSCP) and IP precedence Classification and marking based on IP type of service (ToS) or DSCP Classification and marking based on full Layer 3 and 4 headers (IP only) Input and output policing based on Layer 3 and 4 headers (IP only) Support for 512 policers on ingress and 512 policers on egress configured as aggregate or individual Shaping and sharing output queue management Dynamic Buffer Limiting (DBL) advanced congestion-avoidance feature No performance penalty for granular QoS functions Matched CoS for non-IPv4 traffic

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