Cisco Systems 3512 XL Manual De Usuario

• 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 network traffic

• 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 ready,

allowing users to assign data packets to prioritized

forwarding queues

• Cisco Virtual Trunking Protocol (VTP) supports dynamic

VLANs and trunk configuration across all switches

• Per-port broadcast storm control prevents faulty end

stations from degrading overall system performance with

broadcast storms

• Command-line interface (CLI) support provides common

user interface and command set across all Catalyst series

switches and Cisco routers

• Built-in Web-based Cisco Visual Switch Manager (CVSM)

provides 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 deliver comprehensive in-band

management, and a CLI-based management console

provides detailed out-of-band management

• Manageable through CiscoWorks 2000 network

management software on a per-port and per-switch basis,

providing a common management interface for Cisco

routers, switches, and hubs

• Cisco Discovery Protocol (CDP) enables a CiscoWorks

network management station to automatically discover a

switch in a network topology

• 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, which 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 Services (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, and 10BaseT/100BaseTX

indication, as well as switch-level status LEDs for system,

RPS, and bandwidth utilization provide a comprehensive

and convenient visual management system

• Cisco Uplink Fast technology ensures quick failover

recovery, enhancing overall network stability and reliability

(Enterprise Edition only)

• Support for TACACS+ authentication enables centralized

control of the switch and restricts unauthorized users from

altering the configuration (Enterprise Edition only)

• 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 configuration

• IEEE 802.1D Spanning-Tree Protocol support for

redundant backbone connections and loop-free networks

simplifies network configuration and improves fault

tolerance

• Support for redundant loopback connection through

secondary GigaStack GBICs 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