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Key Features/Benefits

Exceptional Performance

• Twelve, 24, or 48 10Base-T/100Base-TX 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 10Base-T/100Base-TX

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,

anddelivers 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 1000Base-X 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

• 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

• Port-based reclassiﬁcation allows users to reclassify

IEEE 802.1p class-of-service (CoS) values on a per-port

basis (via command-line interface [CLIs]) enabling a

ﬁner granularity of control to implement LAN edge QoS

• 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

switchesor a 2 Gbps forwarding rateina point-to-point

conﬁguration

• GBIC-based Gigabit Ethernet ports give customers a

choiceof 1000Base-T, 1000Base-SX, 1000Base-LX/LH,

1000Base-ZX or Cisco GigaStack stacking GBICs to ﬁt

their connection needs

• Per-port broadcast, multicast and unicast storm control

prevents faulty end stations from degrading overall

system performance

Flexible and Scalable Switch Clustering

Architecture

• Cisco Switch Clustering technology allows a user to

manage up to sixteen interconnected Catalyst 3500 XL,

2900 XL, and Catalyst 1900 switches through a single

IP address regardless of location

• Command Switch Redundancy allows customers to

designate a backup command switch, which takes over

clustermanagement functions in the event of a failureof

the primary command switch

Ease of Use and Ease of Deployment

• Auxiliary VLAN via 802.1Q supports automatic

segmentation of phone and data endpoints into

separate logical networks

• 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

• 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

• Autosensing on each port detects attached device speed

and automatically conﬁgures the port for 10 or 100

Mbps operation, easing the deployment of the switch

in mixed 10Base-T and 100Base-TX environments

• Autonegotiating on all ports automatically selects

half- or full-duplex transmission mode to optimize

bandwidth

• Autoconﬁguration eases switch deployment in the

network by automatically conﬁguring multiple switches

across a network via a boot server

• Default conﬁguration stored in Flash memory ensures

that a switch can be quickly connected to the network

and can pass trafﬁc with minimal user intervention,

preserving conﬁguration in case of a power outage

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