Cisco CATALYST 3548 48 PORT 10/100 ENTERPRISE SWITCH Guida Specifiche

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The EOS of the Catalyst 3512 XL, 3524 XL and 3548 XL switches provides the opportunity to transition to the

feature-rich, enterprise-class Catalyst 3550 or the Catalyst 2950 Series Intelligent Ethernet switches.

The Catalyst 3550 Series provides Layer 2-4 intelligent services in the access layer and the backbone. Customers can

deploy high-performance IP routing, advanced quality of service (QoS), rate-limiting, Cisco security access control

lists (ACLs), and multicast management network-wide—while maintaining the simplicity of traditional LAN

switching.

For those customers that want enhanced functionality at the same price as the existing Catalyst 3500 XL switches,

Cisco offers the Catalyst 2950 Series Intelligent Ethernet switches. The Cisco Catalyst 2950 Series Intelligent Ethernet

Switches provide wire-speed Fast and Gigabit Ethernet connectivity for mid-sized networks that bring intelligent

services, such as advanced QoS, rate-limiting, security filters, and multicast management, to the network edge with

the simplicity of traditional LAN switching. When Catalyst 2950 switches are aggregated with a Catalyst 3550 Series

Switch, the solution enables IP routing from the edge to the core of the network.

Key Benefits of the Cisco Catalyst 3550/2950 Intelligent Ethernet Switches vs. Catalyst 3500 XL
Switches

• Advanced QoS at the edge of the network—Allows superior handling of mission-critical and bandwidth-intensive

applications such as voice, video, and ERP by ensuring that traffic is classified, prioritized, and congestion is

avoided at the first possible opportunity. The Catalyst 3550 and 2950 Series support 802.1p class of service (CoS)

and DiffServ Code Point (DSCP) classification based on Layer 2-4 information, four egress queues per port, and

sophisticated scheduling algorithms such as Weighted Round Robin (WRR).

• Sophisticated traffic management at the edge of the network—Allows complete bandwidth control to help

optimize network performance by eliminating unwanted traffic. The Catalyst 3550 and 2950 Series support

rate-limiting based on Layer 2-4 information.

• Security features at the edge of the network—Permit more effective security by extending the protected border to

the network’s outermost perimeter. The Catalyst 3550 and 2950 Series support ACLs that enable the filtering of

traffic based on Layer 2-4 information.

• Multicast management at the edge of the network—Minimizes congestion and provides scalability in networks

employing video. The Catalyst 3550 and 2950 Series support IGMP snooping.

• IP routing support—The Catalyst 3550 Series supports IP routing, thereby enabling the construction of scalable

LANs by terminating virtual LANs (VLANs), allowing inter-VLAN IP routing, efficiently using bandwidth via

load sharing, and faster failover times in the event of a link failure.