Introduction

 

Cisco is responsible for 80% of the technology on the Internet.1 According to the Cisco Product Catalog, Cisco produces the following categories of products:

·         New Products

·         End-of-life (EOL) Products which are no longer being produced

·         Internetworking Operating System (IOS) Software

·         IOS Software for the S/390 Series which is for the IBM S/370 or S/390 systems

·         Internetwork Management Applications

·         CiscoSecure Access Control Server Software

·         Enterprise Edition Software for the Catalyst 2820 and 1900® Series

·         StrataView Plus WAN Multiservice Management

·         NetSonar Vulnerability Scanner and Network Mapping System

·         ConfigMaker

·         Routers and Access Servers

·         Switches

·         Hubs

·         Asynchronous Transfer Mode (ATM) Products

·         Internet Products

·         Cables and Transceivers

·        Power Supplies and Power Cords

·        Options for Legacy Products

 

Appendix B covers all products. We chose the following for in-depth discussion:

·        IOS Software for the S/390

·        Routers--1000, 1600 and 2500 Series

·        ATM switches--BPX 8600 Series

 

Significance to the Network Manager: Inter-relations of the Products

 

"Cisco routers and access servers run the industry-leading Cisco IOS software."2 Routers connect with lines to hubs in a network. Some routers are combined with hubs into hub/routers. Routers in the 12000 series offer ATM interfaces. They are used for connections of ATM networks.3

 

Connections and Technical Specifications

 

In the Switched Multimegabit Data Service (SMDS) Internetworking Scenario, routers have connections to either FDDI or Ethernet and connections to switches in the SMDS network.4

 

In the following report, the Cisco Hub/Router 2500 is shown to connect to BRI ISDN for private networks or Internet Service Providers; IBM SDLC Legacy devices; T1/E1, Frame Relay, SMDS, X.25 for core networks.

 

The second report covers ATM switches.

 

 

Cisco IOS for System/390 and Routers

 

Cisco Internetwork Operating System (IOS)

 

In general, the IOS is software which provides flexibility through its ability to integrate all evolving classes of network platforms-- including routers, ATM switches, LAN and WAN switches, file servers, intelligent hubs, personal computers and any other devices that have a strategic impact on an organization's internetwork.

 

Specifically, the IOS for S/390:

·        Enables the use of the mainframe as an intranet/Internet server.

·        Provides emulation of IBM MVS mainframes to non-IBM hosts and workstations using Transmission Control Protocol and Internet Protocol (TCP/IP).

·        Runs on IBM System/370 and System/390 mainframes running Multiple Virtual Storage--MVS/XA or MVS/ESA--systems.

·        Provides host and network print services, legacy TN3270 applications, and network features such as File Transfer Protocol (FTP)  file transfer.1

·         Is a communication subsystem for the Department of Defense internet protocols. 2

 

In other words, the IOS provides both host and client applications to IBM mainframes and other computers and workstations.

 

Requirements

 

Cisco IOS for S/390 requires a host with a System/390 processor and the following software:

·        MVS/ESA, OS/390--any version

·        ACF/VTAM (virtual telecommunications access method) 3.1 or later

·        OS PL/1 Transient Library 1.5 or later, or LE/370 1.3 or later 3

·        System Modification Program Extended (SMP/E) is used to install and maintain IOS.4

 

Protocols

 

The Cisco IOS for S/390 software provides several different protocols. IOS has local network access protocols:

·        Internet Protocol (IP) 

·        Other protocols such as Common Link Access to Workstation (CLAW) channel protocol through either an Enterprise Systems Connection (ESCON) or Parallel Channel connected to a CIP card that is installed in the router

 

IOS has host-to-host protocols:

·        Internet Control Message Protocol (ICMP) which carries routing, congestion control, and error reports to hosts

·        Transmission Control Protocol (TCP)  which transmits data over connections or virtual circuits

·        User Datagram Protocol (UDP) which provides datagram service between two processes

·        The user level protocol, including Telnet, File Transfer Protocol (FTP), and Simple Mail Transfer Protocol (SMTP)5

 

Capabilities

 

·         The FTP client and server system provides open-ended file transfer (regardless of data structure.

·        The TN3270 client and server gives users access to business applications on the mainframe.

·        The standard LPD/LPR print services include making MVS print queues available to remote systems.

·        The Enterprise print server (optional) sends print data to TCP/IP network printers.

·        The mainframe cycle off-load using Cisco's Channel Interface Processor (CIP) TCP assist feature means that there will be reduced CPU time whenever possible.

·        The non-disruptive, fault-tolerant host access allows recovery of sessions if any host-based router fails.

·        Application programming interfaces are included for distributed application development of both new and existing client/server applications.6

 

Cisco IOS Prices

 

The Cisco IOS for S/390 for TCP software for IBM Model 20 is $31,920.

 

Cisco IOS for Enterprise Print Service for Model 20 is $7,980.

 

Routers with IOS

 

The Cisco IOS software is packaged into "feature sets" (also called "software images") seen in Table 1.

 

Table 1: Memory Requirements for Cisco 7000 Family of Routers

Feature Set by Router

Image Name

Required Flash Memory

Required DRAM Memory

Release 11.1 CA Runs From

Cisco 7200 Series

 

 

 

 

Desktop/IBM

c7200-dr-mz

8 MB Flash

32 MB DRAM

RAM

Enterprise

c7200-j-mz

8 MB Flash

32 MB DRAM

RAM

Enterprise/APPN

c7200-aj-mz

8 MB Flash

32 MB DRAM

RAM

Network Layer 3 Switching

c7200-inu-mz

8 MB Flash

32 MB DRAM

RAM

Cisco 7500 Series and Cisco 7000 Series with RSP7000 and RSP7000CI

 

Enterprise

rsp-j-mz

8 MB Flash

32 MB DRAM

RAM

Enterprise/APPN

rsp-aj-mz

8 MB Flash

32 MB DRAM

RAM

Enterprise/APPN/VIP

rsp-ajv-mz

16 MB Flash

32 MB DRAM

RAM

Enterprise/VIP

rsp-jv-mz

16 MB Flash

32 MB DRAM

RAM

 

 

 

Routers: Definition

Routers provide the means to divide up Local Area Networks for better performance and security, they also provide the means by which a LAN can connect to a remote LAN and become a Wide Area Network. 9 A device which forwards packets between networks. It transmits packets based on network layer information (of the OSI model) and routing tables. For virtual lans (Cisco), it is said to "bridge and route" information, possibly implying that it is also a device (bridge) which forwards traffic between network segments based on data link layer information whereas these segments would have a common network layer address.

A hub connects several computers together and is responsible for exchanging messages with other hubs and non-local computers. 10

 

Example: Cisco 2500 Hub/Router Family

 

"Cisco 2500 hub/routers can be ordered with any of seven Cisco Internetwork Operating Systems[tm] (Cisco IOS) feature sets." These hub/routers combine the functions of a standalone hub and router in one piece of equipment.


 

 


·        Dimensions (height x width x depth): 1.75 x 17.5 x 10.6 in (4.44 x 44.45 x 28.62 cm)

·        Weight: 10 lb (4.5 kg)

·        Connectors: RJ-45 for 10BaseT (UTP), V.35, EIA/TIA-232, -449, -530, X.21 (Cisco 2505, 2507, 2516), RJ-45 for ISDN BRI (Cisco 2516) 11

 

Routers: Cisco 1600

 

Modular Routers range in price from $895 to $1095.

 

Routers: Cisco 1005

 

The following sections use direct quotes, paraphrasing and notes regarding the Cisco 1005.

 

Tools and Parts Required

Following are the tools and parts required to install the router:

·        3/16-inch (0.476 cm) flat-blade or socket screwdriver

·        Wall-mount hardware, including screws, that you provide

·        Console terminal (a console cable is provided)

    One interface cable (not provided) for the LAN port (10BaseT Ethernet)

·        One shielded interface cable (not provided) for the WAN port (DB-60 serial)

·        Channel service unit/digital service unit (CSU/DSU) or modem (synchronous or

    asynchronous) (not provided) for access to a WAN

 

Router Installation

The router can be placed on any flat surface or installed in any orientation, such as upside down or on a vertical surface. Designed to allow trouble-free operation without cooling fans, special equipment closets, or racks, the router can be set on a desktop or other flat, secure surface. Cables are installed in the connectors on the rear panel.

 

The front-panel light-emitting diodes (LEDs) face upward and are easily visible.

After installing the router, install the Flash memory card (optional), connect the interface cables, and then connect the power supply. All the connectors are on the rear panel of the router.

Setting the Write-Protect Switch

 

Push the Flash memory card into the PCMCIA slot on the rear panel until

the Flash memory card is seated completely in the connector (inside the router).

 

Connecting the Network Interface Cables

 

The 10BaseT Ethernet port supports unshielded twisted-pair cabling. You must supply the cable that connects to the 10BaseT Ethernet port. To connect your Cisco 1005 router to a hub, you need a straight-through cable (see Table A-2 in the appendix "Cable Pinouts"). To connect to a PC Ethernet network interface card, you need a crossover cable.

Connect an Ethernet cable (not provided) to the 10BaseT port. Use a straight-through Ethernet cable if you are connecting the router to a 10BaseT hub. Use a crossover Ethernet cable if you are connecting the router to a PC network interface card.

 

Connect the other end of the Ethernet cable to your Ethernet network

Connect the other end of the shielded serial transition cable to a CSU/DSU or modem (synchronous or asynchronous).  The serial port operates in data terminal equipment (DTE) mode only. You cannot connect the cable to another DTE device (such as a router).


 


Connecting the Console and Modem


Connect the supplied roll-over console cable (RJ-45 to RJ-45) to the console port on the router.

Connect the other end of the console cable to an ASCII terminal or PC.

 

Connecting the Power Supply


 


Connect the DC power cable from the power supply to the DC power input on the rear panel of the router.

Connect the female end of the power cable to the male receptacle on the power supply.

Connect the male end of the power cable to the power outlet. Plugging in the power supply turns ON power to the router.12

 

Summarization: Routers

 

Some routers provide ISDN connectivity to the Internet. In any case, routers have serial connections to 10BaseT Ethernet ports.

 

Routers use connections to the Internet and hubs. In the case of the Cisco 1528 Micro Hub, the hub then connects to the file server, printer, and workgroup. ISDN connects the Internet to the Router which can be connected to a Micro Webserver 200 and an Internet Network.13

 

Routers also connect to Catalyst 2820 switches on an Ethernet. From there the switches connect with Virtual Lans (VLANs).14

 

 

 

 

 

 

 

Sources

1"Cisco IOS for S/390 Architecture." http://www.cisco.com/univercd/cc/td/doc/product/software/ioss390/ios390op/plarch.htm.

2"Introduction to Cisco IOS for S/390." http://www.cisco.com/univercd/cc/td/doc/product/software/ioss390/ios390ug/ugintro.htm.

3,5"Cisco IOS Software for the S/390 Series." http://www.cisco.com/univercd/cc/td/doc/prod_cat/pcios390.htm.

4"Configuring Cisco IOS for S/390 for Routers." http://www.cisco.com/univercd/cc/td/doc/product/software/ioss390/ios390op/plcisco.htm.

6"Cisco IOS Software for the S/390 Series." http://www.cisco.com/univercd/cc/td/doc/prod_cat/pioss390.htm.

7"Release Notes for Cisco 7000 Family for Cisco IOS Release 11.2 P."

http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/ios112p/7000ps/rn7x00.htm.

8 "Release Notes for Cisco IOS Release 11.1."

http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/rnrt111.htm

9"Routers." http://www.pulsewan.com/routers.htm.

10 "Free Online Dictionary of Computing." http://wombat.doc.ic.ac.uk/foldoc/index.html.

11 http://www.cisco.com/warp/public/641/7_ds.htm.

12"Installing the Cisco 1005." http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/1000ig/1005ug/1005inst.htm.

13"Cisco Networked Office Stack."

http://www.cisco.com/warp/public/779/smbiz/products/cnos/cnos_ov.html.

14"Catalyst 2820/1900 Enterprise Edition Software VLANS."

http://www.cisco.com/univercd/cc/td/doc/p…an/28201900/1928v67/eescg67x/02vlans.html.