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1. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE I Chapter 6 1
Exploring the Enterprise
Network Infrastructure

2. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 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.

3. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 3
Interpret Network Documentation
 Network infrastructure diagrams
 Physical topology map
 Logical topology map
 Control plane information: failure domains

4. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 4
Interpret Network Documentation
 Floor plans and blueprints
 Redlining shows changes
 As-built diagram documents changes from original
plans

5. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 5
Interpret Network Documentation
 Business Continuity Plan
 Business Security Plan
 Network Maintenance Plan
 Service Level Agreement

6. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 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

7. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 7
Describe the Equipment in the Enterprise NOC
 Server farm
 Data storage
 Storage Area Network (SAN)

8. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 8
Interpret Network Documentation
 Structured cabling standards
 Main Distribution Facility (MDF)
 Telecommunications room
 Intermediate Distribution Facility (IDF)

9. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 9
Explain the Importance of the Enterprise Edge
in the Provisioning of Services
 Point-of-Presence (POP)
 Demarc
 Links to outside services and sites

10. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 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

11. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 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)

12. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 12
Identify Router Hardware Characteristics
 Router functions
 Form factors
 Interfaces
 Management options

13. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 13
 General use
 Routing related
 Interface related
 Connectivity related
Use Router CLI Show Commands

14. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 14
Use Basic Router Configuration Commands
 Configuration management
 Global settings
 Line settings
 Interface settings
 Routing settings

15. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 15
Identify Switch Hardware Characteristics
 Switch functions
 Form factors
 Port density

16. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 16
Use Switch CLI Show Commands
 General use
 Interface/port related
 Connectivity related

17. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 17
Use Switch CLI Configuration Commands
 Configuration management
 Global settings
 Interface settings

18. © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 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