Cisco Catalyst 4948 - Switch - 48 Ports - Managed - Rack-Mountable

Main Specifications: Product Description Cisco Catalyst 4948E - switch - 48 ports - managed - rack-mountable Device Type Switch - 48 ports - managed Enclosure Type Rack-mountable 1U Subtype Gigabit Ethernet Ports 48 x 10/100/1000 + 4 x SFP+ Performance Switching capacity : 176 Gbps ¦ IPv4 switching : 131 Mpps ¦ IPv6 switching : 110 Mpps Capacity QoS hardware entries : 32000 ¦ Switched virtual interfaces (SVIs) : 4000 ¦ Active VLANs : 4096 ¦ Spanning Tree Protocol instances : 3000 MAC Address Table Size 55K entries Jumbo Frame Support 9216 bytes Routing Protocol RIP-1, RIP-2, static IP routing Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTPS, TFTP, SSH, SSH-2, CLI Features Hot swap module replacement, layer 2 switching, DHCP support, auto-negotiation, VLAN support, IGMP snooping, MAC address filtering, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Spanning Tree Protocol (STP) support, Per-VLAN Spanning Tree (PVST), tunneling, DHCP snooping, Dynamic Trunking Protocol (DTP) support, Port Aggregation Protocol (PAgP) support, Access Control List (ACL) support, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Time Domain Reflectometry (TDR), Per-VLAN Spanning Tree Plus (PVST+) 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, IEEE 802.3ah, IEEE 802.1ag Power Redundancy Optional Dimensions (WxDxH) 17.5 in x 19.4 in x 1.7 in Weight 14.1 lbs General   Device Type Switch - 48 ports - managed Enclosure Type Rack-mountable - 1U Subtype Gigabit Ethernet Ports 48 x 10/100/1000 + 4 x SFP+ Performance Switching capacity : 176 Gbps ¦ IPv4 switching : 131 Mpps ¦ IPv6 switching : 110 Mpps Capacity QoS hardware entries : 32000 ¦ Switched virtual interfaces (SVIs) : 4000 ¦ Active VLANs : 4096 ¦ Spanning Tree Protocol instances : 3000 MAC Address Table Size 55K entries Jumbo Frame Support 9216 bytes Routing Protocol RIP-1, RIP-2, static IP routing Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTPS, TFTP, SSH, SSH-2, CLI Authentication Method Secure Shell (SSH), RADIUS, TACACS+, Secure Shell v.2 (SSH2) Features Hot swap module replacement, layer 2 switching, DHCP support, auto-negotiation, VLAN support, IGMP snooping, MAC address filtering, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Spanning Tree Protocol (STP) support, Per-VLAN Spanning Tree (PVST), tunneling, DHCP snooping, Dynamic Trunking Protocol (DTP) support, Port Aggregation Protocol (PAgP) support, Access Control List (ACL) support, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Time Domain Reflectometry (TDR), Per-VLAN Spanning Tree Plus (PVST+) 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, IEEE 802.3ah, IEEE 802.1ag Processor 1 : 1 GHz RAM 1 GB - SDRAM Status Indicators Port status, link activity, power, link OK, system Expansion / Connectivity   Interfaces 48 x 1000Base-T - RJ-45 ¦ 4 x Power   Power Device Internal power supply - hot-plug Installed Qty 0 (installed) / 2 (max) Power Redundancy Optional Miscellaneous   Compliant Standards NEBS level 3, ETSI, CISPR 22 Class A, EN 61000-3-2, VCCI Class A ITE, EN 61000-3-3, EN55024, EN55022 Class A, EN50082-1, AS/NZ 3548 Class B, EMC, ICES-003 Class A, RoHS, EN300-386, FCC CFR21 Part 1040, UL 60950-1, IEC 60950-1, EN 60950-1, FCC Part 15 A, IEC 60825-1, CSA C22.2 No. 60950-1, EN 60825-1 Dimensions & Weight   Width 17.5 in Depth 19.4 in Height 1.7 in Weight 14.1 lbs Environmental Parameters   Min Operating Temperature 32 °F Max Operating Temperature 104 °F Humidity Range Operating 10 - 90% (non-condensing) Min Storage Temperature -40 °F Max Storage Temperature 167 °F Brief Overview Catalyst 4948 Series 48 ports Rack-mountable 1U Gigabit Ethernet Layer 2 switching, RJ-45 Managed The Cisco Catalyst 4948E Ethernet Switch is built from the start to deliver class-leading, full-featured server-access switching. The switch offers forty-eight 10/100/1000 Gbps RJ45 downlink ports and four 1/10 Gigabit Ethernet uplink ports and is designed to simplify data center architecture and operations by offering service provider-grade hardware and software in a one Rack Unit (1RU) form factor optimized for full-featured Top-of-Rack (ToR) data center deployments. The Cisco Catalyst 4948E, with its advanced multicast support, is optimized for multimedia applications. It supports Protocol Independent Multicast (PIM), Source-Specific Multicast (SSM), and Pragmatic General Multicast (PGM), providing end users with additional scalability to support multimedia applications. Also supported are Internet Group Management Protocol (IGMP) snooping and Multicast Listener Discovery (MLD) snooping in hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove hosts from a multicast group. 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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