Cisco 3550-24 - Catalyst SMI Switch Питання та відповіді - Сторінка 3

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Can I enable static IP routing using the SMI?

Yes, there is support for basic IP unicast routing via Static Routes and Routing Information Protocol (RIP) Versions 1 and

2 using the SMI. The EMI provides advanced IP unicast and multicast routing. These advanced routing protocols are

Open Shortest Path First (OSPF), Interior Gateway Routing Protocol (IGRP), Enhanced Interior Gateway Routing

Protocol (EIGRP), Border Gateway Protocol Version 4 (BGPv4), Protocol Independent Multicast (PIM), and PBR.

Is the EMI required to allow Layer 3 and Layer 4 lookups for QoS and security?

No. Both the SMI and the EMI allow for Layer 3 and Layer 4 lookups for QoS and security.

Why do I need intelligence at the edge of my network?

Networks today are evolving to address four new developments at the network edge:

Increase in desktop computing power

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Introduction of bandwidth-intensive applications

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Expansion of highly sensitive data on the network

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Presence of multiple device types, such as IP phones and wireless LAN access points

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These new demands are contending for resources with many existing mission-critical applications. As a result, IT

professionals must view the edge of the network as critical to effectively manage the delivery of information and

applications.

As companies increasingly rely on networks as the strategic business infrastructure, it is more important than ever to

ensure their high availability, security, scalability, and control. By adding Cisco intelligent functionality to the wiring closet,

customers can now deploy networkwide intelligent services that address these requirements in a consistent way from the

desktop to the core and through the WAN.

With Cisco Catalyst switches, Cisco helps companies to realize the full benefits of adding intelligent services into their

networks. Deploying capabilities that make the network infrastructure highly available to accommodate time-critical

needs, scalable to accommodate growth, secure enough to protect confidential information, and capable of differentiating

and controlling traffic flows is essential to further optimizing network operations.

Can you provide more details on how an intelligent switch from Cisco will help my network?

New applications are requiring higher bandwidth and the need to differentiate and control the traffic flow. Applications

such as ERP (Oracle, SAP, etc.), voice (IP telephony traffic), video (videoconferencing or e-learning applications), and

CAD/CAM require prioritization over less time-sensitive applications such as FTP or e-mail (SMTP). It would be highly

undesirable to have a large file download destined to one port on a wiring closet switch and have quality implications

such as increased latency in voice traffic that is destined to another port on this switch. This condition is avoided by

ensuring that voice traffic is properly classified and prioritized throughout the network. Cisco switches implement superior

QoS to help ensure that network traffic is classified and prioritized, and congestion is avoided.

How does the Cisco Catalyst 3550 Series manage the security needs of a network?

With the rise in internal threats to a network, Cisco switches enhance data security through a wide range of features

including Secure Shell (SSH) Protocol, Kerberos, Simple Network Management Protocol Version 3 (SNMPv3), ACLs,

802.1X, 802.1X with VLAN assignment, 802.1X with ACL assignment, 802.1X with voice VLAN, 802.1X with Port

Security, Port Security, Private VLAN Edge, Dynamic Host Configuration Protocol (DHCP) Interface Tracker, MAC

Address Notification, Switched Port Analyzer (SPAN) for Intrusion Detection System (IDS) support, and

RADIUS/TACACS+. Depending on your security needs, the Cisco Catalyst 3550 Series complements devices such as

firewalls, VPNs, and IDSs.

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