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Exploring the Enterprise Network Infrastructure

Introducing Routing and Switching in the Enterprise – Chapter 2

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Objectives Interpret network documentation.

– Describe the equipment in the enterprise Network Operations Center.

Explain the importance of the enterprise edge in the provisioning of services.

– Describe the Point-of-Presence for service delivery.

– Identify security considerations and equipment at the enterprise edge.

Identify router and switch hardware characteristics and use router CLI configuration and verification commands.

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Interpret Network Documentation

Network infrastructure diagrams

Physical topology map

Logical topology map

Control plane information: failure domains

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Interpret Network Documentation

Floor plans and blueprints

Redlining shows changes

As-built diagram documents changes from original plans

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Enterprise Network Documentation

Business Continuity Plan: (BCP) identifies the steps to be taken to continue business operation in the event of a natural or man-made disaster.

Business Security Plan: (BSP) includes physical, system, and organizational control measures. The overall security plan must include an IT portion that describes how an organization protects its network and information assets.

Network Maintenance Plan: (NMP) ensures business continuity by keeping the network up and running efficiently. Network maintenance must be scheduled during specific time periods, usually nights and weekends, to minimize the impact on business operations.

Service Level Agreement: (SLA) is a contractual agreement between the customer and a service provider or ISP, specifying items such as network availability and service response time.

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Describe the Equipment in the Enterprise NOC

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Describe the Equipment in the Enterprise NOC

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Structured Cabling

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Telecommunications Room (IDF MDF)

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Telecommunications: Power to end Users

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Summary: Telecommunications

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Enterprise Edge & the Provisioning of Services

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Enterprise Edge & the Provisioning of Services

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Connecting the Enterprise

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Summary: Connections

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Distribution Layer: Routers

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Identify Router Hardware Characteristics

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Router Connections

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Use Router CLI Show Commands

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Router: Show CLI commands

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Use Basic Router Configuration Commands

Configuration management

Global settings

Line settings

Interface settings

Routing settings

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Basic router configuration Verify and save configuration changes using the copy running-config

startup-config command. To clear the router configuration, use the erase startup-config command and then the reload command.

Configuration Management:

Enable, configure terminal, copy running-config startup-config, erase startup-config, reload

Global Settings:

Hostname, banner motd, enable password, enable secret

Line Settings:

line con, line aux, line vty, login and password

Interface Settings:

interface type/number, description, ip address, no shutdown, clock rate, encapsulation

Routing Settings:

router, network, ip route

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Identify Switch Hardware Characteristics

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Switch Hardware

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Use Switch CLI Show Commands

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Switch CLI commands

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Use Switch CLI Configuration Commands

Configuration management

Global settings

Interface settings

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Quiz question

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Chapter 2 tasks

Labs:

Basic switch configuration

Basic router configuration

Routing and switching lab

Basic switch elab

Practice exam questions

Wiki notes

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Summary Network infrastructure diagrams document devices in a

network

The enterprise NOC manages and monitors all network resources

The enterprise edge provides Internet and local access services and security against attacks

Access Layer switches provide end user connections, security services, and microsegmentation of collision domains

Distribution Layer routers control broadcasts and move packets between locations and the Internet

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