FREE ESSAY ON NETWORK DEGN

NETWORK DEGN

Table of Contents
1. Executive Summary
1.1. Purpose of the Project 3
1.2. Strategic Recommendation 3
1.3. Implementation Consideration 3
1.4. Benefits of the Solution 4
2. Designing Requirements 
2.1. Existing Network 5
2.2. Network Requirements 5
3. Design Solution
3.1. Proposed Network Topology 6
3.2. Hardware and Media Recommendation for the LAN 6
3.3. Hardware and Media Recommendation for the WAN 7
3.4. Network Layer Addressing and Naming Model 8
3.5. Routing and Bridging Protocols Recommendation for the 
Network 9
3.6. Software Features Provisioned for the Network 9
3.7. Network Management Strategy 10
4. Summary
4.1. Benefits of Working with Cisco Systems 11
4.2. Benefits of Working with CD-INC 11
4.3. Conclusion 12
5. Appendixes 
5.1. Appendix A 13
5.1.1. Professor's benefit 13
5.1.1.1. Introduction: 13
5.1.1.1.1. Case Study: 13
5.1.1.1.2. PH Network Service Corporation 13
5.1.1.1.3. Company Background 13
5.1.1.1.4. Current Network 13
5.1.1.1.5. Goals for the New Network 14
5.2. Appendix B 15
5.2.1. Visio Diagrams
5.2.1.1. Data Flow 15
5.2.1.2. Network Topology 16
5.2.1.3. Naming and Addressing Convention 17
5.3. Appendix C
5.3.1. Cisco Device Description 18
Executive Summary
Purpose of the Project
PH Network Service Corporation (PH) requested that CD-INC to provide a network design and
implementation solution to connect four Hospitals and 120 doctor offices. PH Network
Service Corporation objectives are to: 
? Improve communication - transfer of the referrals
? Improve patient service
? Provide redundancy for WAN connection
? Network four hospitals and doctor offices
? Improve reliability and speed of the referrals
? Provide a suggestion for a possible back-up connection to the hospitals.
Strategic Recommendation
Timely access to information between the hospitals and the doctor offices is critical to
patient care. The Network must be reliable, secure, and enable the doctors to access this
system remotely from their offices with a remote access connection (RAS).
Implementation Consideration
CD-INC will design and implement entire solution. After the network is installed and
functioning properly PH Network Solution will take over and provide their daily services
to hospitals and doctor's offices. CD-INC will provide training for installed equipment.
Benefits of the Solution
The solution designed by CD-INC will provide the following benefits:
? Two of their employees will be assistants in phase of developing solution (training)
? One of their employees will be involved in phase of implementation
? Training of PH staff for new installed equipment
? Improved communication - transfer of the referrals
? Improved patient service
? Redundancy for WAN connection
? Networking of the four hospitals and doctor offices
? Improved reliability and speed of the referral system
? A suggested connection for back-up hospital WAN link
Design Requirements
Existing Network
The network must be built on a limited budget.
Must be scalable for future WAN connections.
The network must work with the servers on the network.
The data must be readily available.
120 Offices transmitting data.
Table A show the Application on the Network.
Applications used by PH.
Name and Type of Application Protocols # of users # of Host/Servers Peak hours of usage
Automated referral system TCP/IP 120 1 8-12am/1-5pm
Hospital Patient Records Async - 4 8-12am/1-5pm
Patient Records from Doctor Offices Telnet - 4 8-12am/1-5pm
Network Requirements
The ISDN connections provide adequate bandwidth to support the needs of the Doctors
offices connecting to the hospitals. This also means provisions must be taken to ensure
more connections can be added when necessary.
An ISDN connection should also be considered for the hospital as a back-up connection to
the referral system.
There are bandwidth considerations for the Windows 2000 SQL 2000 servers using a
Microsoft Access front end and 2400 referrals being made each day (48000 Packets).
Figure A Data Flow of a Referral Request.
Design Solution
Proposed Network Topology
Figure B Proposed Network Topology.
Hardware and Media Recommended for the PH LAN
100-Mbps connections between the switch and the servers
10-Mbps between the switch and the end stations
The Catalyst 2828 switch
? Software upgrade to Enterprise Edition
? 4 models with 24 10BaseT ports, two slots, and choice of 2K or 8K MAC address cache
? Choice of 11 high-speed modules support 100BaseT, FDDI, and ATM
? Full-duplex operation on all ports
? Web-based network interface enables configuration and management form any client on the
Internet with a web-browser.
? Congestion control features including IEEE 802.3x-based flow control, and back -
pressure based flow control on 10BaseT ports
Hardware and Media Recommended for the WAN
The Cisco 3620 router at the PH Head office
LAN Interface:
NM-1E One-port Ethernet network module.
WAN Interface: 
ISDN and Channeled Serial Network Modules NM-1CT1 One-port channeled 1/ISDN PRI network
module
Frame Relay supported by an 8-port T1 IMA network interface
The Cisco 1004 router at the doctor's offices
LAN Interface:
One 10BaseT Ethernet port (RJ-45)
WAN Interface:
One ISDN BRI WAN port (RJ-45), with an integrated NT1 device
The Cisco 2611 router at the Hospitals
LAN Interface:
Two Ethernet ports
WAN Interface:
ISDN and Channeled Serial Network Modules NM-1CT1 One-port channeled 1/ISDN PRI network
module
Network Addressing and Naming Convention
Figure C Network Addressing and Naming Convention
The Hospitals have provided two Network addresses (202.12.27.0 & 202.12.28.0). The
Network 202.12.27.0 was provided for the two WAN connections. This network will be
sub-netted with a 26 bit sub-net mask to create a sub-network of 202.12.27.64/26 for the
frame relay WAN and 202.12.27.128 for the ISDN WAN. The Network 202.12.28.0 has been
given to PH for internal use on their LAN with a 24 bit sub-net mask.
Table B Device List and Network Addressing
Device Name Location # Required Device Address Port Address
Catalyst 2828 PH_SW_1 PH LAN 3 202.12.28.4 24 Ethernet ports 202.12.28.11-254/24
PH_SW_1 202.12.28.5 24 Ethernet ports 202.12.28.11-254/24
PH_SW_1 202.12.28.6 24 Ethernet ports 202.12.28.11-254/24
Windows 2000 AS/SQL Server 2000 PH_SER_1 PH LAN 2 202.12.28.7 
PH_SER_2 202.12.28.8 
Cisco 3620 PH_RO_1 PH LAN 1 
S0 202.12.27.129/26
S1 202.12.27.65/26
E0 202.12.28.1/24
E1 -
Cisco 2611 HOS_RO_1 Hospitals 4 
HOS_RO_2 S0 202.12.27.12.131-134/26
HOS_RO_3 S1 -
HOS_RO_4 E0 -
E1 -
Cisco 1004 DRO_RO_# Dr. Offices ? Dynamic serial addressing
S0 202.12.27.66-126/26
E0 -
Routing and Bridging Protocols
The common program running at all locations is the patient referral system and it is IP
based so routing it is not a problem. The NT names do not need to be routed. We recommend
that OSPF (an open standard supported by all major network vendors) be used as the
routing protocol to support a multi-vendor environment.
Software Features
Additional security maybe required too protect the sensitive information being sent even
though both WAN networks an inherent amount of security built in.
Implementing a full security solution would be very expensive especially on the ISDN
Network. The most cost-effective solution would be to:
1. Place a layer2 encryption protocol (such as Cisco's Encryption Services) on the Frame
Relay Network and an application layer encryption protocol on the ISDN Network.
2. Put all the LANs behind DMZ (Demilitarized Zone) using PIX firewalls.
Network Management Strategy
The network should be easy to manage depending on the number of doctor's office that need
their routers maintained. ABC could manage the network if needed or Network Management
tools that the junior administrator is comfortable with could be installed. 
Summary
Benefits of working with Cisco systems
**"Cisco Systems, Inc. is the worldwide leader in networking for the Internet. Cisco
routers arc the basis for over 80 percent of the Internet infrastructure, and Cisco
supplies 60 percent of the access solutions used by companies to provide connectivity for
remote users and connect to the Internet. Additionally, Cisco, the inventor of switched
Ethernet and Fast Ethernet today's most popular high-performance LAN technologies leads
the way in providing affordable, high-performance LAN solutions.
Cisco's solutions designed help you maximize your business potential and cost-effectively
meet your expanding networking requirements. These solutions leverage Cisco's vast
networking experience, innovative technologies, outstanding service, and high-quality
products, and they help organizations make the transition that extend beyond the main
office to multiple offices, mobile users telecommuters, and to the Internet. These
solutions give network managers the tools they needed to build networks that are
scalable, flexible, and powerful enough to handle the challenges today's networking
environment.
Cisco products include a wide range of high-performance LAN products, such as 100BaseT
hubs and Ethernet switches, routers, dial access servers, and network management software
solutions. All of these products are based on the Cisco IOS technologies an integrated of
network services that provides the native intelligence for more than 1 million "installed
Cisco units and comprises an integral part of the products of many global partners. All
Cisco products provide quality, reliability, network security, and interoperability based
on industry standards Headquartered in San Jose, California, Cisco employs more than
12,000 people in over 125 worldwide locations. The company's stock is traded over the
counter on the Nasdaq National Market under the symbol CSCO."
** Cisco Network Design edited by Diane Teare - published by Cisco Press
Benefits of Working with CD-INC
CD-INC Company specializes in management, development, implementation and consulting
networking solutions for over xx years.
Conclusion
CD-INC will provide the design and the product solution that will meet 100% of the PH
Network Solution requirements and be in the required budget. The entire system will meet
PH Network request for redundancy on the hospitals sides. Products that are selected will
provide for entire network the best performance and quality available. 
Appendix A
* Introduction to Case Study
PH Network Service Corporation
The Client
Mr. Pero of PH Network is responsible for updating the network to use new technologies.
Company Background
PH Network is joint venture between the New Life hospital system and 750 physicians in
the community served by New Life. The company was formed to improve patient service by
the hospital system and physicians, and to provide leverage when negotiating with managed
care health plan companies.
One problem area and cost for the doctors is the specialist referral authorization
system. The doctors must get authorized referrals for specialist service for their
patients before the managed care health plans will cover the cost for the patient. PH
Network has negotiated with a number of health plans to take on the risk of these
referrals in exchange for more of the premium. PH has determined that this scenario will
make economic sense if it can implement an automated referral system. Mr. Pero has
indicated that referrals are nearly always made during normal office hours of 8 a.m. to
12 p.m. and 1 p.m. to 5 p.m.
Current Network
The company maintains a 56kbps leased-line connection to the hospital facilities, plus a
dial-up terminal connection to some of the larger doctor offices for access to the
hospital's patient records. Both direct terminal access and Telnet access are available
on the hospital hosts. There are total of 120 doctor offices and 4 hospitals. The actual
PH Network staff consists of 50 employees in a single office location. Because the number
of these referral transactions will average 20 per day, PH Network plans to use IDSN to
network to all the doctor offices, and a Frame Relay network between the PH office and
the four hospitals. The connection between doctor offices and the PH referrals system
will be a "dial as needed" design. Each doctor's office will have a PC for this purpose.
Some of the larger offices already have small Ethernet LANs. However, PH is concerned
that the doctors will simply stop using the system if it is not available when needed,
which would mean failure for the venture.
Goals for the New Network
PH also knows doctors do not like to spend non-medical money. Therefore, it wants a
network with the best estimate of sufficient ISDN connection to start and the capability
to add new connection rapidly. The software is being developed for a Windows NT/SQL
Server system with a Microsoft Access front end using an ODBC interface to the SQL
Server. The hospital connection is critical, so PH would like to look at possible
redundancy or backup for this connection.
*Cisco Network Design - edited by Diane Teare 
Publisher Cisco Press
Appendix B
Visio Diagrams
Data Flow Solution
Network Topology Solution
Addressing and Naming Convention
Appendix C
Cisco Device Description
Catalyst 2820 Series - Modular Ethernet Switches
Product Overview
The modular Catalyst 2820 series switches are the ideal solution for Ethernet workgroups
and individual users who need increased performance at a surprisingly affordable price,
and 100BaseT, Fiber Distributed Data Interface (FDDI), or Asynchronous Transfer Mode
(ATM) connectivity to servers and network backbones.
A Catalyst 2820 series Standard Edition switch is an effective backbone in a small/medium
business network, aggregating 10BaseT hubs and network resources, or used at the
workgroup level in a large network for dedicated, high speed connections from individual
desktops to servers and other network devices. 
All Catalyst 2820 series switches offer unrivaled ease of use through an intuitive and
comprehensive Web-based management interface. Standard Edition switches are upgradable to
provide unmatched flexibility and scalability when combined with Enterprise Edition
software. Enterprise Edition software enables these switches to deliver comprehensive
management and security, bandwidth optimization, networked multimedia, and virtual LAN
(VLAN) support. Enterprise Edition software enables these switches to deliver unmatched
network configuration flexibility and scalability through embedded Cisco technologies,
delivering comprehensive management and security, bandwidth optimization, networked
multimedia, and virtual LAN (VLAN) support. The Enterprise Edition software is
pre-installed in Enterprise Edition switches, and available as an Upgrade Kit for
Standard Edition switches.
Key Features and Benefits
Standard Edition Feature Summary
? Software upgradable to Enterprise Edition
? 4 models with 24 10BaseT ports, two slots, and choice of 2K or 8K MAC address cache
? Choice of 11 high-speed modules support 100BaseT, FDDI, and ATM
? Full-duplex operation on all ports
? Web-based network interface enables configuration and management form any client on the
internet with a web-browser.
? Congestion control features including IEEE 802.3x-based flow control, and back-pressure
based flow control on 10BaseT ports
Performance
? Twelve or twenty-four 10BaseT ports deliver dedicated 10 Mbps of bandwidth to
individual users or workgroups to support bandwidth-intensive applications
? Two high-speed expansion slots maximize high-speed configuration and backbone
flexibility
? One switched Attachment Unit Interface (AUI) port for connecting to fiber or legacy
10Base2 or 10Base5 networks 
? Shared-memory architecture with 3 MB packet buffer virtually eliminates packet loss 
? Non-blocking, ClearChannel architecture supports wire-speed bridging on all ports,
delivering up to 370 Mbps maximum forwarding bandwidth, and 550,000 pps aggregate
? CollisionFree full-duplex operation on switched 10BaseT and 100BaseT ports delivers up
to 200 Mbps of bandwidth tend stations, servers and between switches 
? Choice of congestion control options for applications that require zero packet loss:
? Enhanced congestion control accelerates packet forwarding when the switch buffers are
full 
? Back-pressure on half-duplex Ethernet ports throttles network transmission using the
IEEE 802.3 Layer 2 back-off algorithm
? IEEE 802.3x flow control on 100BaseTX ports provides intelligent flow management
between switches and between a switch and a server 
? Per-port broadcast storm control prevents faulty end stations from degrading overall
system performance with broadcast storms
? Choice of cut-through or store-and-forward switching lets administrators optimize for
performance or error checking 
Security and Redundancy
? IEEE 802.1d Spanning-Tree Protocol support for redundant backbone connections and
loop-free networks simplifies network configuration and improves fault tolerance 
? TACACS+ enables designation of a separate access server for authentication,
authorization, and accounting (Enterprise Edition only)
? User-selectable address learning mode simplifies configuration and enhances security
? Resilient link support for faster recovery from network failures
Scalability
? Fast EtherChannel provides up to 400 Mbps of bandwidth to switches, routers, and
servers by enabling parallel bandwidth links between switches (with Enterprise Edition
software).
? Cisco Group Management Protocol (CGMP) enables a switch to selectively and dynamically
filter and forward routed IP multicasts to targeted multimedia end stations, optimizing
bandwidth for applications such as Intranet, video-conferencing and IPTV.
? Overlapping bridge groups control broadcasts within the switch to manage bandwidth and
provide added security.
? Broadcast control for end stations with up to 1024 administrator-defined, port-based
VLANs. VLANs can be distributed across multiple switches with Cisco`s dynamic
Inter-Switch Link (ISL) trunking on 100BaseT ports (with Enterprise Edition software).
? Support for optional Cisco 600-watt redundant AC power system provides a backup power
source for up to four units for improved fault tolerance and network uptime.
Flexible Network Configuration
? No per-port Media Access Control (MAC) addresses limitations - provides flexibility to
connect to individual users or shared hubs. Support for 1024 MAC addresses on Catalyst
1900 and up to 8192 addresses on Catalyst 2820. Allows switch to scale with a growing
network
? Configurable network port that supports unlimited MAC addresses for backbone
connectivity
Management
? Web-based secured interface allows user to configure and manage the switch from any
client on the internet with a web-browser
? Simple Network Management Protocol (SNMP) and Telnet support delivers comprehensive
in-band manageability, and a menu-based management console provides out-of-band
manageability
? Supports four groups of embedded RMON (history, statistics, alarms, and events).
Support for all nine RMON groups through use of a SwitchProbe Analyzer port that permits
traffic monitoring of a single port, a group of ports, or the entire switch from a single
network analyzer or RMON probe. (Enterprise Edition only)
? Cisco Discovery Protocol (CDP) enables a CiscoWorks network management station to
automatically discover the switch in a network topology 
? Autonegotiation on 100BaseTX ports automatically selects half- or full-duplex
transmission mode to optimize bandwidth
? Domain Name Service (DNS) eases network administration by enabling logical name
assignments. Network Administrators can specify an end system or Catalyst 1900/2820 by
name, rather than address.
? Dynamic Host Configuration Protocol (DHCP) support eases network administration by
automatically requesting an IP address from any network DHCP server.
? 
http://www.cisco.com/univercd/cc/td/doc/pcat/ca2820.htm
Cisco 3600 Series - Modular, High-Density Access Routers
Product Overview
The Cisco 3600 series is a multifunction platform that combines dial access, routing, and
LAN-to-LAN services and multiservice integration of voice, video and data in the same
device. The Cisco 3600 series includes the Cisco 3660, the Cisco 3640, and Cisco 3620
multiservice platforms. As modular solutions the Cisco 3660, the Cisco 3640, and Cisco
3620 have the flexibility to meet both current and future connectivity requirements. The
Cisco 3600 series is fully supported by Cisco IOS software, which includes analog and
digital voice capability, ATM access with T1/E1 IMA or OC-3 interfaces, dial-up
connectivity, LAN-to-LAN routing, data and access security, WAN optimization, and
multimedia features.
The Cisco 3660 has six network module slots; The Cisco 3640 has four network module
slots; the Cisco 3620 has two slots. Each network module slot accepts a variety of
network module interface cards, including LAN and WAN mixed media cards supporting
Ethernet, Fast Ethernet, Token Ring, and a variety of WAN technologies. These cards
provide the foundation of LAN and WAN connectivity on a single, modular, network module.
Additional applications are supported with a series of network module cards offering
digital modems, asynchronous and synchronous serial, ISDN PRI, and ISDN BRI interfaces.
In addition to the 6 network module slots the Cisco 3660 has 2 internal Advanced
Integration Module (AIM) slots for applications such as hardware accelerated compression
and the chassis incorporates 1 or optionally 2 integrated 10/100 (Ethernet/Fast Ethernet)
ports.
The Cisco 3600 series shares network modules, WAN Interface Cards, and Voice Interface
Cards with the Cisco 2600 series. The Cisco 3600 series shares WAN Interface Cards with
the Cisco 1600 and Cisco 1700 series.
Key Features and Benefits
The Cisco 3660, Cisco 3640, and Cisco 3620 routers support the following network
applications and services:
? Analog and digital voice services
The voice/fax network modules for the Cisco 2600 and Cisco 3600 series multiservice
access routers enable packet voice technologies including VoIP and VoFR. Cisco`s voice
solutions provide the means for integrating both voice and data within a single network
and allow users to take advantage of services, such as toll-bypass, without sacrificing
voice quality. The digital T1/E1 Packet Voice Trunk Network Module provides a flexible
and scalable T1/E1 voice solution and supports up to 60 voice channels in a single
network module. The analog voice/fax network modules slide into Cisco 2600 and 3600
chassis slots and contain either one or two voice interface card (VIC) slots. The VICs
currently available are two-port foreign exchange station (FXS), foreign exchange office
(FXO), E&M 2-wire and 4-wire interfaces and a basic rate interface (BRI). The voice
modules support all major industry codecs including G.711, G.723, G.726, G.728, G.729 and
G.729a/b for customized solutions and to meet the need for high voice quality and
bandwidth efficiency
? ATM networking services
Four new multiport T1/E1 ATM network modules with Inverse Multiplexing over ATM (IMA) and
3 ATM OC-3 network module are now available for the 3600 series multiservice access
platforms. These new multiport ATM modules allow service provider and enterprise
customers to cost-effectively increase bandwidth, extending multiservice capabilities to
remote-branch-office locations through ATM. These network modules support a robust set of
ATM features including UBR, VBR-rt, VBR-nrt, and ABR ATM class of services, ATM Forum
User Network Interface (UNI) 3.0, UNI 3.1, and UNI 4.0 signaling, Permanent Virtual
Circuits (PVCs) and Switched Virtual Circuits (SVCs), and ATM Adaptation Layer 5 (AAL5)
to name a few.
? Dial-up services
The Cisco 3600 is a mid-range dial-up platform that fits between Cisco`s AccessPath and
AS5300 products at the high end and the Cisco 2500 series access servers at the low end.
Mixed-mode and high density ISDN and asynchronous configurations offer substantial
flexibility in dial-up applications. Integrated digital modems (with support for PRI,
BRI, CT1 and R2) and new integrated analog modems further enhance the dial access
flexibility and scalability of the Cisco 3600. 
? ISDN PRI networks
The Cisco 3600 series offers high levels of cost effective ISDN PRI concentration. A
Cisco 3640 configured with a Mixed Media LAN/ISDN PRI network module and three 2-port
ISDN PRI network modules supports up to 186 (T1) or 240 (E1) B channels. This is a
powerful and cost effective way to aggregate many branch offices and telecommuters onto
one corporate network. 
? ISDN BRI networks
For areas of the world where ISDN BRI services are more widely available or cost
effective, the Cisco 3600 series supports many BRI interfaces. Configured with a LAN
network module and three 8-port network modules, a Cisco 3640 connects up to 48 B
channels. In this way, one system provides high-density BRI interface dial-up support and
local LAN and WAN routing connectivity. 
? Serial networks
With support for up to 48 synchronous serial interfaces on the Cisco 3660, the Cisco 3600
series and its RISC processor are the perfect complement to the Cisco 2600, 2500, 1700,
and 1600 series. The Cisco 3600`s higher performance and modular design are appropriate
for locations needing support for multiple T1/E1 links or the ability to change
configurations in the future.
? Mixed WAN services
Many corporate environments require support for a mixture of ISDN PRI, ISDN BRI,
asynchronous serial, and synchronous serial connections. The Cisco 3600 series is ideal
for this scenario. It allows migration between interfaces or simultaneous support of
several technologies.
? Multiservice access solutions and applications
The three Cisco 3600 models allow new levels of connectivity and performance for branch
offices with their scalable size, slot density, and cost. Combinations of network modules
provide new opportunities for branch offices needing more than a fixed-configuration
solution. The Cisco 3620, for example, provides multiple LAN access server support for
asynchronous, ISDN, analog modem and digital modem environments, which complements the
Cisco 2500 series access servers. Alternatively, a Cisco 3620 adds multiple LAN
capabilities to branch bank environments needing to assimilate legacy serial devices,
connecting them all to a high-speed Frame Relay network. 
? LAN-to-LAN services
Consistent with its other capabilities, the Cisco 3600 series offers midrange LAN-to-LAN
connectivity for branch offices needing a flexible modular platform. The Cisco 2500
series, with a multitude of fixed configurations, offers cost effective branch office
solutions including integrated routers and hubs, single and dual LAN routers, and
multiple serial routers. 
Network Module Options for the Cisco 3600 Series
The Cisco 3660, Cisco 3640, and Cisco 3620 routers are 6-, 4- and 2-slot multiservice
access routers, respectively, whose LAN and WAN connections are configured by means of
interchangeable network modules and WAN interface cards. The Cisco 3660 also incorporates
1 or optionally 2 integrated 10/100 (Ethernet/Fast Ethernet) ports.The following network
modules are available for the Cisco 3660, Cisco 3640, and Cisco 3620 routers:
? Analog and Digital (T1) Voice Network Modules
? Single-Port High-Speed Serial Interface (HSSI)
? ATM 25 Mbps Network Module
? ATM OC3 155 Mbps Network Module
? 6, 12, 18, 24 and 30 digital modem network modules
? LAN with modular WAN (WAN Interface Cards)
? 8 and 16 analog modem network modules
? Channelized T1, ISDN PRI and E1 ISDN PRI network modules
? Combined FastEthernet and PRI network modules
? 4- and 8-port ISDN BRI network modules
? 16- and 32-port asynchronous network modules
? 4- and 8-port synchronous/asynchronous network modules
? 1- and 4-port Ethernet network modules
? 1-port Fast Ethernet (10/100) network modules (100BaseT - TX and Fiber - FX)
? 8- and 16-port analog modem modules
? 4-port serial network module
? Compression network module (Cisco 3620 and Cisco 3640, AIM for the Cisco 3660)
In addition the Cisco 3660 supports 2 internal AIM slots. The Data Compression Advanced
Integration Module (AIM) for the Cisco 3660 Series delivers a cost-effective option for
reducing recurring wide-area network (WAN) costs and maximizing the benefit of the
advanced bandwidth management features of Cisco IOS. The Data Compression AIM takes
advantage of either of the two available Cisco 3660 internal AIM slots, ensuring that
external slots remain available for components such as integrated analog voice/fax,
digital voice/fax, ATM, channel service unit/digital service units (CSU/DSUs), analog and
digital modems.
The figure below shows how a vacant chassis slot on the Cisco 3640 accepts a mixed media
network module, which in turn accepts a WAN interface card. 
Cisco 2600 Series - Modular Access Routers
Product Overview
Cisco Systems extends enterprise-class versatility, integration and power to branch
offices with the Cisco 2600 series modular access router family, for an attractive price.

The Cisco 2600 series modular architecture offers network managers and service providers
a branch office solution that provides the versatility needed to adapt to changes in
network technology, as new services and applications become available. With full support
of the Cisco IOS software, Cisco 2600 modular architecture provides the power to support
the advanced Quality of Service (QoS), security, and network integration features
required in today`s evolving enterprise and service provider networks.
The Cisco 2600 series shares modular interfaces with the Cisco 1600, 1700 and 3600
series, providing a cost-effective solution to meet today`s branch office needs for
applications such as:
? Secure Internet/intranet access with Firewall protection
? Multiservice voice/data integration
? Analog and digital dial access services
? Virtual Private Network (VPN) access
? Inter-VLAN routing
? Routing with Bandwidth Management
While the pace of change in network technology continues to increase, global deregulation
of telecommunications has allowed more service providers to compete for data, voice and
video network services. Only companies who have designed their network infrastructures
with these factors in mind will be able to benefit from the lower prices caused by
increased competition and protect themselves from technology lockout in the future.
The Cisco 2600 series features single or dual fixed LAN interfaces, a network module
slot, two Cisco WAN interface card (WIC) slots, and a new Advanced Integration Module
(AIM) slot. LAN support includes single and dual Ethernet options; 10/100 Mbps
autosensing Ethernet; mixed Token-Ring and Ethernet; and single Token Ring chassis
versions. WAN interface cards support a variety of serial, ISDN BRI, and integrated
CSU/DSU options for primary and backup WAN connectivity, while available network modules
support multiservice voice/data/fax integration, departmental dial concentration, and
high-density serial options. The AIM slot supports integration of advanced services such
as hardware-assisted data compression and in the future, encryption. All Cisco 2600
series routers include an auxiliary port supporting 115Kbps Dial On Demand Routing, ideal
for back-up WAN connectivity.
As part of Cisco`s comprehensive end-to-end networking solution, the Cisco 2600 series
allows businesses to extend a cost-effective, seamless multiservice network
infrastructure to the branch office. By deploying the Cisco 2600 series router, companies
can consolidate the functions of multiple separate devices into a single, compact package
that can be managed remotely. Because the Cisco 2600 series is modular, interface
configurations are easily customized to accommodate a wide variety of network
applications. Some of these applications include the following:
? Multiservice Voice/Data/Fax Integration
The Cisco 2600 Series reinforces Cisco`s commitment to provide multiservice voice/data
integration capabilities across its product portfolio, allowing network managers to save
on long-distance inter-office toll charges and enabling next-generation voice-enabled
applications such as integrated messaging and Web-based call centers. Using the
sophisticated QoS features of Cisco IOS software, such as the Resource Reservation
Protocol (RSVP), Weighted Fair Queuing (WFQ), FRF.11 and FRF.12, and IP Precedence, the
Cisco 2600 series allows voice traffic to be digitized, encapsulated in data packets or
Frames, and prioritized over other data traffic for a highly efficient, end-to-end
network infrastructure for Voice over Frame Relay or Voice over IP.
? Analog and Digital Dial Services 
With support for up to 36 high-speed asynchronous ports or up to 64 ISDN B channels, the
Cisco 2600 provides a cost-effective, single-box dial concentration solution for
enterprise or service provider networks. By allowing users in remote locations to call a
local phone number for access to both the corporate LAN or the Internet, enterprises can
reduce toll charges. For example, the Cisco 2600 series provides dial-up capability for
up to 32 remote users, accommodating protocols such as PPP, SLIP, ARA, and Xremote on any
port, while supporting dedicated connections to the Internet and the corporate intranet.
The new integrated 8 and 16 analog modem modules provide for a single box Remote Access
Server solution with improved manageability.
? Virtual Private Network (VPN) Access and Firewall Protection
Many companies have begun to use Virtual Private networks (VPNs) to reduce WAN costs by
deploying secure tunneled connections via the Internet. VPNs can be rapidly set up and
torn down to provide extranet links to customers, business partners and remote employees.
With extra performance required to support advanced Cisco IOS security features such as
IPSec and 3DES encryption, the Cisco 2600 series can support multiple encrypted tunnels
and provide the advanced security features of the Cisco IOS Firewall feature set. 
For example, a Cisco 2610 router in the branch office can provide secure privileged
access to business partners while also supporting another connection to a Cisco 2621 in
the main office. The dual-LAN architecture of the Cisco 2621 allows the customer to
create an external subnet or DMZ for a public Web server outside the firewall while
providing security for the internal network. Simultaneously, remote users can connect to
local point of presence Cisco 5300 which tunnels across the Internet to the same 2621
saving on long distance or 1-800 connection charges. Cisco IOS features such as
tunneling, data encryption, and termination of Remote Access WANs via IPSec, Layer 2
Forwarding (L2F) and Layer 2 Tunneling Protocols (L2TP) make the Cisco 2600 an ideal
platform for building virtual private networks or outsourced dial solutions.
? Serial Device Concentration
The Cisco 2600 provides a cost-effective, flexible solution for concentrating serial
devices in remote locations. Async/sync ports provide connections to serial devices such
as SDLC concentration devices, alarm systems, ATMs, debit/credit terminals and cash
registers. With full Cisco IOS protocol support including SDLC, BSC, BTSUN, STUN, X.25,
Frame Relay, and polled async, the Cisco 2600 consolidates traffic from a wide variety of
serial devices over a single connection, eliminating costly dial-up BSC links. 
The 4- or 8-port asynchronous/synchronous network modules can be combined with, for
example, the mixed Ethernet/Token Ring Cisco 2612 and integrated CSU/DSU and BRI WICs to
address various retail or financial branch office environments. Stacking the Cisco 2600
series with Cisco LAN switches such as the Catalyst 1900, 2820 and 2900XL series enables
network administrators to manage remote branch office environments efficiently using
CiscoWorks and CiscoView network management solutions. 
? Mixed WAN services
Cisco 2600 offers a variety of connectivity options with the reliability and high
performance required to address today`s evolving branch office WANs. Up to 8 dedicated
128-kbps synchronous connections, one ISDN BRI and one T1/fractional T1 Frame Relay
connections can be simultaneously supported with a single Cisco 2600.
? LAN-to-LAN services
The Cisco 2600 offers a unique combination of versatility, integration and power at an
attractive price for branch office LAN-to-LAN routing applications. Many of today`s
multiple device solutions gateways can be integrated into one Cisco 2600 configuration.
Cisco 2600`s RISC-based processor provides the power needed for the dynamic requirements
of the remote branch office, achieving wire speed Ethernet to Ethernet routing with up to
25 thousand packets per second (Kpps) throughput capacity.
? Evolving Business Applications
The Cisco 2600`s combination of fixed LAN port(s) along with modular interfaces provide
customers with the ability to change or meet future networking requirements without a
forklift upgrade. 
Key Features and Benefits
As part of Cisco`s comprehensive end-to-end networking solution, the Cisco 2600 series
supports the value of end-to-end Cisco network solutions with the following benefits:
? Multiservice integration
Allows network managers to save long-distance inter-office toll charges and enable
next-generation voice applications such as integrated messaging and Web-based call
centers.
? Investment protection
Because the Cisco 2600 series supports field-upgradable modular components, customers can
easily change network interfaces without a forklift upgrade of the entire branch office
solution. The AIM slot of the Cisco 2600 platform further protects investments by
enabling new services such as hardware-assisted data compression and, in the future,
hardware-assisted data encryption without using an external interface slot. 
? Reliability
To maximize network uptime, the Cisco 2600 series offers a redundant power supply (RPS),
which can be shared with other Cisco products. The Cisco 2600 series also supports Cisco
IOS reliability features such as dial-on- demand routing (DDR) to restore both data and
voice services automatically in the event of a primary link failure.
? Lower cost of ownership
Integrating the functions of CSU/DSUs, ISDN Network Termination (NTI) devices, modems,
firewall, compression and encryption devices and other equipment found in branch office
wiring closets in a single, compact unit provides a space-saving solution that can be
managed remotely using network management applications such as CiscoWorks and CiscoView.
? Part of a Cisco end-to-end solution
As part of Cisco`s comprehensive end-to-end networking solution, the Cisco 2600 series
allows businesses to extend a cost-effective, seamless multiservice network
infrastructure to the branch office.
Standard Features
The Cisco 2600 series is available in the following six base configurations:
? Cisco 2610: One Ethernet port
? Cisco 2611: Two Ethernet ports
? Cisco 2612: One Ethernet port and One Token Ring port 
? Cisco 2613: One Token Ring port
? Cisco 2620: One 10/100 Mbps auto-sensing Ethernet Port
? Cisco 2621: Two 10/100 Mbps auto-sensing Ethernet Ports
Each model also has two WAN interface card slots, one network module slot, and one AIM
slot. All Cisco 2600s include the Cisco IOS IP feature set; other feature sets may be
selected as upgrade options.
http://www.cisco.com/univercd/cc/td/doc/pcat/2600.htm
Cisco 1000 Series
Fixed-Configuration Desktop Access Routers
Product Overview
The Cisco 1000 series of compact, fixed-configuration routers provide low-cost,
high-speed connectivity for branch and small offices. Available in synchronous and
asynchronous models.
There are currently three Cisco 1000 series models:
? Cisco 1003 ISDN router
? One 10BaseT Ethernet port (RJ-45)
? One ISDN BRI WAN port (RJ-45)
? One console port (RJ-45)
? One Type-2 PCMCIA slot for Flash ROM card
? Cisco 1004 ISDN router
? One 10BaseT Ethernet port (RJ-45)
? One ISDN BRI WAN port (RJ-45), with an integrated NT1 device 
? One console port (RJ-45)
? One Type-2 PCMCIA slot for Flash ROM card
? Cisco 1005 serial router
? One 10BaseT Ethernet port (RJ-45)
? One serial WAN port (DB-60) that supports asynchronous serial communications up to
115.2 kbps (EIA/TIA-232 interface) and synchronous serial such as leased lines, Frame
Relay, switched 56 kbps, SMDS, and X.25 up to 2.048 Mbps (EIA/TIA-232, EIA/TIA-449, V.35,
X.21, and EIA-530)
? One console port (RJ-45)
? One Type-2 PCMCIA slot for Flash ROM card
Key Features and Benefits
Cisco 1003 and Cisco 1004 ISDN Routers
The Cisco 1003 and Cisco 1004 routers are small, desktop routers that connect small,
remote sites with Ethernet LANs to ISDN WANs.
The main difference between the two routers is that the Cisco 1004 router includes an
integrated network termination 1 (NT1) device and the Cisco 1003 router does not. The
ISDN service provider supplies the NT1 connection worldwide, except in North America,
where the NT1 device is supplied by the customer. Therefore, the Cisco 1004 router is for
use in North America, and the Cisco 1003 router is applicable worldwide. 
The rear view of the routers looks the same except for the following differences, shown
in the following figure:
? The BRI port on the Cisco 1003 is labeled ISDN S/T, and Cisco 1003 is stamped on the
upper left corner of the chassis (not illustrated).
? The BRI port on the Cisco 1004 is labeled ISDN U, and Cisco 1004 is stamped on the
upper left corner of the chassis (not illustrated).
The Cisco 1003 and Cisco 1004 routers include the following standard features:
? One Ethernet 10BaseT port with an RJ-45 connector
? One ISDN BRI port with an RJ-45 connector (the Cisco 1004 router includes an integrated
NT1 device)
? One console port with an RJ-45 connector
? Console cable kit and power supply
? One external PCMCIA slot for optional Type-2 Flash memory card
? Software booting over an Ethernet LAN using TFTP
? Optional Flash memory card to store software image and configuration files, allowing
network-independent booting and software updates over the WAN or LAN connections
? LAN-to-LAN DDR routing over ISDN lines
? IP, IPX and AppleTalk routing
? Transparent bridging
? IPX and SPX spoofing
? PPP compression and bandwidth-on-demand with load balancing for throughput up to 512
kbps
? HDLC and standards-based PPP
? Increased security with CHAP, PAP, packet filters, local password and CLI/ANI 
? Network management and monitoring through the console port or over the network using
SNMP or Telnet
? Support for Frame Relay
Information about devices is from Cisco web site and it can be found on:
http://www.cisco.com/univercd/cc/td/doc/pcat/1000.htm
Bibliography
IT proffesioanl