1. Exploring the Enterprise
Network Infrastructure
Introducing Routing and Switching in the Enterprise –
Chapter 2
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2. 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.
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2

3. Interpret Network Documentation
 Network infrastructure diagrams
 Physical topology map
 Logical topology map
 Control plane information: failure domains
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4. Interpret Network Documentation
 Floor plans and blueprints
 Redlining shows changes
 As-built diagram documents changes from original
plans
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5. Interpret Network Documentation
 Business Continuity Plan
 Business Security Plan
 Network Maintenance Plan
 Service Level Agreement
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6. Describe the Equipment in the Enterprise NOC
 Raised floors
 High performance UPS and HVAC
 Fire suppression systems
 Network monitoring equipment
 MDF switches and routers
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7. Describe the Equipment in the Enterprise NOC
 Server farm
 Data storage
 Storage Area Network (SAN)
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8. Interpret Network Documentation
 Structured cabling standards
 Main Distribution Facility (MDF)
 Telecommunications room
 Intermediate Distribution Facility (IDF)
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9. Explain the Importance of the Enterprise Edge
in the Provisioning of Services
 Point-of-Presence (POP)
 Demarc
 Links to outside services and sites
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10. Explain the Importance of the Enterprise Edge
in the Provisioning of Services
 Security considerations at the enterprise edge
–Denial of Service (DoS) attacks
–Application of filtering policies
 Firewall
 Demilitarized zone
 Intrusion detection and
prevention
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11. Explain the Importance of the Enterprise Edge
in the Provisioning of Services
 Connection services
 WAN punchdown block
 Channel Service Unit/Data Service Unit (CSU/DSU)
 Customer Premises Equipment (CPE)
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12. Identify Router Hardware Characteristics
 Router functions
 Form factors
 Interfaces
 Management options
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13. Use Router CLI Show Commands
 General use
 Routing related
 Interface related
 Connectivity related
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14. Use Basic Router Configuration Commands
 Configuration management
 Global settings
 Line settings
 Interface settings
 Routing settings
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15. Identify Switch Hardware Characteristics
 Switch functions
 Form factors
 Port density
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16. Use Switch CLI Show Commands
 General use
 Interface/port related
 Connectivity related
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17. Use Switch CLI Configuration Commands
 Configuration management
 Global settings
 Interface settings
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18. 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
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 18

19. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 19