Implementing Secure
Converged Wide Area
Networks (ISCW)
Module 1 Remote Network Connectivity Requirements
© 2006 Cisco Systems, Inc. All rights reserved.
Module 1 Remote
Network Connectivity
Requirements
Lesson 1.1 Enterprise Networking
© 2006 Cisco Systems, Inc. All rights reserved.
Objectives
 Define IIN and Cisco SONA frameworks
 Describe the traditional three-layer hierarchical network
model.
 Identify remote network requirements and options.
© 2006 Cisco Systems, Inc. All rights reserved.
Traditional Three-layer Hierarchical
Model
© 2006 Cisco Systems, Inc. All rights reserved.
Elements of Cisco Enterprise Architecture
© 2006 Cisco Systems, Inc. All rights reserved.
Remote Network Requirements
 The central site must:
Provide secure and reliable access to resources for remote
users.
Accommodate many types of WAN connections from remote
locations.
 Remote sites:
Branch office — A remote location that accommodates
employees who have a reason to be located away from the
central site. A branch office is also called a remote site or
remote office.
SOHO site — A small office with one to several employees or
the home office of a telecommuter.
Mobile workers sites — Remote locations for mobile users who
tend to access the company network using an asynchronous
dialup connection or access the corporate intranet using
broadband Internet service.
© 2006 Cisco Systems, Inc. All rights reserved.
Setting Up WAN Connections for Remote Sites
Factor
Options
Multiple access options
Leased line, broadband, MPLS, Frame
Relay, VPN, ISDN
Cost
Permanent, on-demand, public or
private
Access control
Router and firewall rulesets
Secure connectivity
IPsec or MPLS VPN
Authentication
Remote to central
Redundancy
Duplicate services in case of failure
Infrastructure availability
Not all services are available in all
areas
© 2006 Cisco Systems, Inc. All rights reserved.
Example: Integrated Services for Secure
Remote Access
© 2006 Cisco Systems, Inc. All rights reserved.
Intelligent Information Network
 Intelligent Information Network (IIN) integrates
networked resources and information assets.
 IIN extends intelligence across multiple products and
infrastructure layers.
 IIN actively participates in the delivery of services and
applications.
 Three phases in building an IIN are:
Integrated transport
Integrated services
Integrated applications
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco SONA Framework
 The Cisco Service-Oriented Network Architecture
(SONA) is an architectural framework.
 SONA brings several advantages to enterprises:
Outlines how enterprises can evolve towards the IIN
Illustrates how to build integrated systems across a fully
converged intelligent network
Improves flexibility and increases efficiency
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco SONA Layers
© 2006 Cisco Systems, Inc. All rights reserved.
Self Check
1. What are the 3 layers included in the traditional
hierarchical model?
2. What 3 types of remote sites that must be
accommodated at the central site?
3. What are some examples of the types of WAN
technologies used to connect a remote site to the
central site?
© 2006 Cisco Systems, Inc. All rights reserved.
Summary
 The traditional three-layer hierarchical model no longer
completely meets the needs of large enterprise
networks with remote sites.
 Cisco Enterprise Architecture integrates the entire
network—campus, data center, branches, teleworkers,
and WAN—to provide secure access to all tools,
processes, and services across all sectors of the
company.
 Providing secure remote access is a key feature of
Cisco Enterprise Architecture. The infrastructure layer
of SONA addresses remote access.
 IIN aligns IT resources with business priorities.
 Cisco SONA provides an evolutionary path to IIN.
© 2006 Cisco Systems, Inc. All rights reserved.
Q and A
© 2006 Cisco Systems, Inc. All rights reserved.
Resources
 What is IIN?
http://www.cisco.com/en/US/netsol/ns650/networking_solutions
_market_segment_solution.html
 At-a-Glance: What is Cisco SONA?
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns477/c
643/cdccont_0900aecd8039b324.pdf
 Service Orientated Network Architecture
http://cisco.com/en/US/netsol/ns629/networking_solutions_mark
et_segment_solutions_home.html
© 2006 Cisco Systems, Inc. All rights reserved.
© 2006 Cisco Systems, Inc. All rights reserved.