Cisco WS-C2912MF-XL Manual do Utilizador descarregar pdf (Página 4)

• Autosensing on each port detects the speed of the attached

device and automatically conﬁgures the port for 10 or 100 Mbps

operation, easing the deployment of the switch in mixed

10BASE-T and 100BASE-T environments.

• Autonegotiation on all 10/100 ports automatically selects half-

or full-duplex transmission mode to optimize bandwidth.

• Default configuration stored in Flash memory ensures that the

switch can be connected to the network and pass traffic with

minimal user intervention, and preserves the configuration data in

case of power outages.

Integrated Cisco IOS Switching Software

• CGMP Fast Leave software allows end stations to quickly exit

from a multicast session, reducing superﬂuous trafﬁc on the

network.

• Bandwidth aggregation through Fast EtherChannel and Gigabit

EtherChannel technology enhances fault tolerance andoffers up

to 800 Mbps and 4 Gbps of bandwidth between switches, and to

routers and individual servers.

• Per-port broadcast storm control prevents faulty end stations

from degrading overall systems performance with broadcast

storms.

• Command-line interface (CLI) support provides common user

interface and a command set with Catalyst 5000, 5500 and 8500

series switches and all Cisco routers.

Comprehensive Manageability

• Simple Network Management Protocol (SNMP) and Telnet

interface support delivers comprehensive in-band manage-

ment, and the Cisco IOS CLI-based management console

provides detailed out-of-band management.

• Cisco Visual Switch Manager, a built-in Hypertext Transfer

Protocol (HTTP) server, provides an ease-of-use Web-based

management interface through a standard browser such as

Netscape Navigator or Microsoft Explorer.

• The switch is manageable through CiscoWorks Windows and

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

the switch in a network topology.

• An embedded Remote Monitoring (RMON) software agent

supports four RMON groups (history, statistics, alarms, and

events) for enhanced trafﬁc management, monitoring, and

analysis.

• Cisco IOS software supports all nine RMON groups through

use of a Switched Port Analyzer (SPAN) port, which permits

high-performance trafﬁc monitoring of a single port, a group of

ports, or the entire switch from a single network analyzer or

RMON probe.

• Autoconﬁguration eases deployment of switches in the network

by automatically conﬁguring multiple switches across a

network via a boot server.

• Trivial File Transfer Protocol (TFTP) reduces the cost of

administering software upgrades by enabling downloads from a

centralized location.

• Each port includes a multifunction LED for port status,

half-duplex/full-duplex, and 10BASE-T/100BASE-T

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

module status, redundant power supply (RPS), and bandwidth

utilization, providing a comprehensive and convenient visual

management system.

Security and Redundancy

• IEEE 802.1D Spanning-Tree Protocol support for redundant

backbone connections and loop-free networks simpliﬁes

network conﬁguration and improves fault tolerance.

• MAC-based port level security prevents unauthorized stations

from accessing a switch.

• The user-selectable address learning mode simpliﬁes

conﬁguration and enhances security.

• Support for the 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.

• Multilevel security on the console access prevents unauthorized

users from altering the switch conﬁguration.

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