Cisco WS-C3548-XL-EN - Catalyst 3548XL Enterprise Edition Switch Manual de usuario descargar pdf (Pagina 3)

Software Management Features

Cisco Catalyst 3500 series XL switches include several exceptional

features to increase network performance, manageability, and

security. In order to boost performance, Fast EtherChannel and

Gigabit EtherChannel technology offer from 400-Mbps to 4-Gbps

high-performance bandwidth between Catalyst switches, routers,

and servers. The Cisco Group Management Protocol (CGMP)

enhances performance of multimedia applications and reduces

network trafﬁc by allowing a switch to selectively and

dynamically forward IP multicast trafﬁc to targeted end stations.

Users can also implement higher levels of data security and

boost LAN performance by deploying up to 250 virtual LANs

(VLANs) per switch. This ensures that data packets are forwarded

only to stations within a speciﬁc VLAN, creating a virtual ﬁrewall

between groups of ports on the network and reducing broadcast

transmission. VLAN trunks can be created from any port using

either 802.1Q trunking or the Cisco Inter-Switch Link (ISL)

VLAN architecture. VLANs using standards-based 802.1Q and

ISL trunking provide broadcast control and enhanced security,

and simplify adds, moves, and changes. Per VLAN Spanning Tree

(PVST+) allows users to implement redundant uplinks while also

distributing trafﬁc loads across multiple links—not possible with

standard STP implementations. Cisco Uplink Fast technology

ensures immediate transfer to the secondary uplink, enhancing

overall network stability and reliability.

With the Catalyst 3500 series XL, network managers can

implement high levels of port and console security. Media access

control (MAC) address-based port level security prevents

unauthorized stations from accessing the switch. Multilevel

access security on the switch console prevents unauthorized users

from accessing or altering switch conﬁguration. Terminal access

controller access control system (TACACS+) authentication

enables centralized access control of the switch and restricts

unauthorized users from altering the conﬁguration.

Key Features/Benefits

Exceptional Performance

• Twelve, 24, or 48 10BaseT/100BaseTX autosensing ports, each

delivering up to 200 Mbps of bandwidth to individual users,

servers, or workgroups to support bandwidth-intensive

applications

• Two built-in, GBIC-based Gigabit Ethernet ports, delivering up

to 4-Gbps aggregated bandwidth to Gigabit Ethernet

backbones, Gigabit Ethernet servers, or between switches

• 10.8-Gbps switching fabric and up to a 8.0-million-

packets-per-second forwarding rate, ensuring high performance

forwarding to each 10BaseT/100BaseTX and Gigabit Ethernet

port

• 4-MB shared memory architecture, ensuring 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, delivering up to 200 Mbps on

10/100 ports or 2-Gbps on 1000BaseX ports

• Dual-priority forwarding queues on each 10/100 and Gigabit

Ethernet ports, enabling network trafﬁc prioritization

and seamless data, voice, and video integration through IEEE

802.1p protocol

• Bandwidth aggregation through Fast EtherChannel and Gigabit

EtherChannel technologies, enhancing fault tolerance and

offering from 400-Mbps to 4-Gbps of aggregated bandwidth

between switches, and to routers and individual servers

• GigaStack GBIC delivers a low-cost, independent stack bus

with a 1-Gbps forwarding bandwidth in a daisy-chain

conﬁguration, with up to nine Catalyst 3500 XL or

gigabit-enabled Catalyst 2900 series XL switches or a 2-Gbps

forwarding rate in a point-to-point conﬁguration

• GBIC-based Gigabit Ethernet ports give customers a choice of

1000BaseSX, 1000BaseLX/LH, 1000BaseZX or Cisco

GigaStack stacking GBICs to ﬁt their connection needs

• Per-port broadcast storm control prevents faulty end stations

from degrading overall system performance with broadcast

storms

Flexible and Scalable Switch Clustering Architecture

• Cisco Switch Clustering technology allows a user to manage up

to 16 interconnected Catalyst 3500 XL, 2900 XL, and Catalyst

1900 switches through a single IP address regardless of location

• Cluster management is ensured in the rare event of command

switch failure via a failover scheme that runs automatically

(enabled in March ’00 software release)

Ease of Use and Ease of Deployment

• Cluster software administration feature allows the network

manager to quickly and easily upgrade the system software on

a group of Catalyst 3500 XL, 2900 XL, and Catalyst 1900

switches

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