Cisco Catalyst 3508G 8 Port Gigabit Switch

Part #: WS-C3508G-XL-EN

The Catalyst 3508G XL switch features eight Gigabit Interface Converter (GBIC)-based 1000Base-X ports and a 10-Gbps switching fabric. These features make this switch ideal for either high speed wiring closet stack aggregation or a distribution layer Gigabit Ethernet aggregation switch. The switch is easy to deploy, either on a desktop or in a wiring closet, and features Cisco IOS software support. Administration of the Cisco desktop Catalyst switches is made even more convenient via Cisco Switch Clustering technology. 

Key Specifications

Catalyst 3508G 8 Port Gigabit Switch

Manufacturer		Cisco
Manufacturer Part #		WS-C3508G-XL-EN
Device Type		Switch
Enclosure Type		External 1U Rack Mountable
Memory		8 MB DRAM, 4 MB Flash Memory CISCO ASIC Processor
Networking	Connectivity Technology	Wired
	Data Transfer Rate	1000 Mbps
	Remote Management	- Telnet - CWSI - (CLI)-based out-of-band - Embedded Cisco Visual Switch Manager - Web-based interface - Cisco Cluster Management Suite (CSM) - Simple Network Management Protocol (SNMP) - Manageable through CiscoWorks2000 network - Embedded Remote Monitoring (RMON) - Support for all nine RMON groups through use of a Switch Port Analyzer (SPAN) - SNMP Management Information Base (MIB) II - SNMP MIB extensions - Bridging MIB (RFC 1493)
	Remote Management Protocol	FTP, VTP, CGMP, CDP, TACACS+, DNS, NTP, TFTP
	Communication Mode	Full-Duplex, Half-Duplex
	Status Indicators	Port transmission speed, port duplex mode, power, network utilization %
	Features	Manageable, stackable
	Compliant Standards	IEEE 802.3 IEEE 802.3U IEEE 802.3z IEEE 802.1D IEEE 802.1Q
Interfaces	Interfaces	8 x GBIC Module Expansion Slots 1 x RJ-45 Console (Management)
Power Requirements	Power Supply	Internal
	Voltage	100 or 240 VAC (auto-ranging), 50 to 60 Hz
	Consumption	189 Watts Maximum
Dimensions (H X W X D)	Unit	17.5" x 15.9" x 1.7"
Weight	Unit	12.1 lbs

Features:

• Exceptional Performance
• Eight GBIC-based Gigabit Ethernet ports deliver up to 5-Gbps aggregated forwarding bandwidth to a switch cluster
• 10-Gbps switching fabric and 7.0 million packets-per-second forwarding rate
• 4 MB shared-memory architecture ensures the highest possible throughput, with a design that eliminates head-of-line blocking, minimizes packet loss, and delivers better overall performance in environments with extensive multicast and broadcast traffic
• Full-duplex operation on all ports delivers up to 2-Gbps on 1000Base-X ports
• Dual-priority forwarding queues on each Gigabit Ethernet port through IEEE 802.1p protocol enable prioritization of mission critical and time sensitive traffic from data, voice, and telephony applications
• Trusted extension settings allows the switch to set trusted port settings for the PC port on Cisco IP phones, ensuring voice traffic receives highest priority
• Bandwidth aggregation up to 4 Gbps through Gigabit EtherChannel technology enhances fault tolerance and offers higher-speed aggregated bandwidth between switches, and to routers and individual servers
• A configurable network port supports unlimited MAC addresses for backbone connectivity
• GigaStack GBIC delivers a low-cost hardware-based, independent stack bus with up to 1-Gbps forwarding bandwidth in a cascade configuration (up to nine Catalyst 3500 XL or gigabit-enabled Catalyst 2900 Series XL switches) or 2-Gbps forwarding rate in a point-to-point configuration
• GBIC-based Gigabit Ethernet ports give customers a choice of 1000Base-T, 1000Base-SX, 1000Base-LX/LH, 1000Base-ZX, or Cisco GigaStack GBICs to fit their connection needs
• Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems performance
• Flexible and Scalable Switch Clustering Architecture
• Cisco Switch Clustering technology allows the user to manage up to sixteen interconnected Catalyst 3500 XL, 2900 XL, and Catalyst 1900 switches through a single IP address, regardless of location
• Common Switch Redundancy allows customers to designate a backup command switch, which takes over cluster management functions in the event of a failure of the primary command switch
• Ease of Use and Ease of DeploymentT
• The cluster software administration feature allows a network manager to quickly and easily upgrade the system software on a group of Catalyst 3500 XL, and 2900 XL, and Catalyst 1900 switches
• IEEE 802.3z-compliant 1000Base-T, 1000Base-SX, 1000Base-LX/LH, and 1000Base-ZX physical-interface support through a field-replaceable GBIC module provides customers unprecedented flexibility in switch deployment
• Autoconfiguration eases deployment of switches in the network by automatically configuring multiple switches across a network via a boot server
• Default configuration stored in Flash memory ensures that the switch can be quickly connected to the network and can pass traffic with minimal user intervention, preserving the configuration in case of a power outage
• Voice VLAN creates a new subnet for use by IP phones in cases where there are not enough free IP addresses in the existing subnets
• Integrated Cisco IOS Switching Solution
• Cisco Group Management Protocol (CGMP) enables a switch to selectively and dynamically forward routed IP multicast traffic to targeted multimedia end stations, reducing overall network traffic
• CGMP Fast Leave allows end stations to quickly exit from a multicast session, reducing superfluous traffic on the network
• Virtual LAN trunks can be created from any port using either standards-based 802.1Q tagging or the Cisco ISL VLAN architecture
• IEEE 802.1p Layer 2 prioritization protocol allows users to assign data packets to prioritized forwarding queues
• Cisco Virtual Trunking Protocol (VTP) supports dynamic VLANs and dynamic trunk configuration across all switches
• Command-Line-Interface (CLI) support provides common user interfaces and command sets across all Catalyst series switches and Cisco routers
• Cisco Discovery Protocol (CDP) enables a CiscoWorks network management station to automatically discover the switch in a network topology
• Superior Manageability
• Built-in Web-based Cisco Cluster Management Suite (CSM) software provides an easy-to-use Web-based management interface through a standard browser such as Netscape Navigator or Microsoft Explorer
• Simple Network Management Protocol (SNMP) and Telnet interface support delivers comprehensive in-band management, and a CLI-based management console provides detailed out-of-band management
• Manageable through CiscoWorks2000 network management software on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs
• 8 MB DRAM and 4 MB Flash memory on board enable the addition of a continuous stream of feature upgrades, maximizing customer investments
• Embedded Remote Monitoring (RMON) software agent supports four RMON groups (History, Statistics, Alarms, and Events) for enhanced traffic management, monitoring, and analysis
• Support for all nine RMON groups through use of a Switch Port Analyzer (SPAN) port that permits traffic monitoring of a single port, a group of ports, or the entire switch from a single network analyzer or RMON probe
• Domain Name System (DNS) client support provides IP address resolution with user-defined device names
• Trivial File Transfer Protocol (TFTP) reduces the cost of administering software upgrades by downloading from a centralized location
• Network Time Protocol (NTP) provides an accurate and consistent timestamp to all switches within the intranet
• Multifunction LEDs per port for port status, half-duplex/ full-duplex indication, switch-level status LEDs for system, redundant power supply (RPS), and bandwidth utilization provide a comprehensive and convenient visual management system
• Spanning Tree Root Guard (STRG) prevents devices not in the network administrator's or service provider's control from becoming STP root nodes by configuring STRG on device ports it does control
• VTP pruning limits broadcasts on VTP trunks. When VTP pruning is enabled, broadcast traffic is flooded only on trunk links required to reach the destination devices
• Redundancy
  Cisco Uplink Fast technology ensures quick failover recovery, enhancing overall network stability and reliability
• Cross-Stack Uplink Fast (CSUF) technology provides increased redundancy and network resiliency through fast-spanning-tree convergence (less than two seconds) across a stack of switches using Gigastack GBICs
• IEEE 802.1D Spanning-Tree Protocol support for redundant backbone connections and loop-free networks simplifies network configuration and improves fault tolerance
• Redundant stacking connections support for a redundant loopback connection in top and bottom switches in a stack
• Support for optional Cisco 600-watt redundant AC power system provides a backup power source for up to four units for improved fault tolerance and network uptime
• Support for TACACS+ authentication enables centralized control of the switch and restricts unauthorized users from altering the configuration
• MAC-based port-level security prevents unauthorized stations from accessing the switch
• User-selectable address learning mode simplifies configuration and enhances security
• Multilevel security on console access prevents unauthorized users from altering the switch configurations
• Private VLAN edge provides security and isolation between ports on a switch, ensuring that voice traffic travels directly from its entry point to the aggregation device through a virtual path and cannot be directed to a different port