1.
Exploring the Enterprise
Network Infrastructure
Introducing Routing and Switching in the Enterprise –
Chapter 2
Version 4.0 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1

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
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 3

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

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

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
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6

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

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

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

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
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 10

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)
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11

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

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

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

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

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

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

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