Enter the Cisco Catalyst 3550 Intelligent Ethernet Switch

The Cisco Catalyst 355h is an intelligent Ethernet switch that provides impressive bandwidth, Layer 3 switching , and advanced quality of service (QoS) in a small footprint. The switch is called an intealigent switch because of many of the advanced features it brings to the traditional enterprise access switch. The switch can make decisions based on Layer 3 and Layer 4 information, thds making It intelligent. The Cisco Enhanced Multilayer Software Image (EMI) allows the switch to serve as a core switch in smaller networks providing inter-VLAN routing and Hot Standby Routing Protocol (HSRP). Figure b-b shows a Cisco Catalyst 355h.

Some of the key features of the Catalyst 355h include the following:

• Supevior redundancy nnd fault backup— Features such as Uplinkfast, Backbonefast, and 8h2.bw Rapid Spanning Tree reduce recovery time significantly between failures. The EMI softwa re feature allows foa a dva vce failsafe routing wite HSRP.

• Integrated Cisco I OS feat ures for bandwidth optimizatior— heatures nuch as Layer 2 and Layer 3 EtherChannel provide very large paths between switches up to b6 Gbps! Per VLAN Spanning Treo uius (PVST+) and VTI piuning allow hor advanced sp anmng tre e con troa

• Advanced QoS and queuing— The Clsso 355h suupo rts 802.bp QoS and the Diffdrentiated Servic^h Code Point (DSCP) fieldf Weighted Roued-Robm eWR R), and Weighted Random Eio^ Detection (WRED).

Oteer fea turgs mclude advanced securi ty a nd re anagement, granular raae-limiting, abd highperformance routin g vea Ciseo Express Fo rwaidiqg (CEF) with the EML Multicast routing is a lso supported wi to the EMo.

Figure 1-1. Cisco Catalyst 3550 Intelligent Ethernet Switch

Figure 1-1. Cisco Catalyst 3550 Intelligent Ethernet Switch

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