Cisco Network Bases

1
Cisco Network Bases

• Dijiang Huang, Deep Medhi
• SICE, UMKC
• 10/1/2002

2
Hardware Configuration of Cisco Router

• Cisco 2500 Series (2522, 2524)

Ref http//www.cisco.com/univercd/cc/td/doc/pcat/
2500.htm
3
Cisco 2500 Router Series - Hardware (Memory)

• Dynamic Random-Access Memory (DRAM) for main
  memory (store the operating configuration,
  routing tables, caches, and queues. 2M-14M ) and
  shared memory (store incoming and outgoing
  packets. 2M)
• Flash memory for running the Cisco IOS software
  (8M, 4M for mission specific)

4
Cisco 2500 Router Series- Hardware (Processor and
Control)

• Processor 20 MHz 68030 (32 bits processor
  80386)
• EIA/TIA-232 console port for local system access
  using a console terminal
• EIA/TIA-232 auxiliary port for remote system
  access using a modem
• Ethernet

5
Cisco 2500 Router Series Hardware (Models)
The Cisco 2500 series routers provide a variety
of models designed for branch office and remote
site environments. These routers are typically
fixed configuration with at least two of the
following interfaces

• Ethernet (AUI)
• 10BaseT Ethernet hub
• Token ring
• Synchronous serial
• Asynchronous serial
• ISDN BRI

6
Software Configuration of Cisco Router

• IOS 11.1 - 12.2

Ref http//www.cisco.com/warp/public/732/jump.sht
ml
7
Cisco IOS Fundamental

• Cisco IOS software provides a wide range of
  functionality from basic connectivity,
  security, and network management to technically
  advanced services that enable businesses to
  deploy applications such as real-time trading,
  interactive support, on-demand media, and
  unified messaging.
• Evolution first-generation networking devices
  could only store and forward data packets , to
  today, Cisco IOS software can recognize,
  classify, and prioritize network traffic,
  optimize routing, support voice and video
  applications etc.

8
Cisco IOS Multiple Protocols Support

• IP
• Internetwork Packet Exchange (IPX)
• AppleTalk
• DECnet
• Systems Network Architecture (SNA)

9
Cisco IOS Command-line Interface (CLI)

• Command-line interface
• Interface that allows the user to interact with
  the operating system by entering commands and
  optional arguments.
• Prompt gt or .
• Learn how to use tab and ?

10
Cisco 2522/2524 IOS Version (11.1 and 12.2)

• IP Routing
• IP Routing Plus
• IP/IPX with IBM base functionality and APPN
• Desktop (IP/IPX/AppleTalk/DEC)
• Desktop (IP/IPX/AppleTalk/DEC) Plus
• Enterprise
• Enterprise Plus
• Enterprise/APPN/Plus
• Mission-specific Cisco 2500 series
  application-specific software

http//www.cisco.com/warp/public/44/jump/routers.s
html
11
Connecting to Cisco Router

• Peripheral and Related Network Devices

12
Connections of Cisco Router

• Ethernet ports and cables (RJ45)
• Switches
• Catalyst 1900 (VLAN)
• Catalyst 5000
• Hub
• Serial ports (V.35) and cables
• Front panels
• Console

13
Cisco 2524 Back Panel
14
Catalyst 1900 Switch

• VLAN set up on Catalyst 1900

15
Catalyst 5000 Switch
16
Cisco Router Configuration Basis

• Network Topologies and Configuration Examples

Ref http//conrel.sice.umkc.edu/courses/cs420/Min
i20Cisco2020Router20Configure20Guide.htm
17
An Example of Network Connection
18
Private IP Addresses

• There are three IP network addresses reserved for
  private networks. The addresses are
• 10.0.0.0/8
• 172.16.0.0/12
• 192.168.0.0/16
• (RFC 1918)

19
Cisco Router Configuration Basis

• Loop back address (127.0.0.1)
• Interface IP address
• Connect to Cisco router (telnet, console, remote
  access through modem)
• Unprivileged mode (gt) privileged mode ()
• Use tab and ?

20
Cisco Router Configuration Basis

• TFTP server transfer config file (through
  Ethernet connection)
• Diagnose tools
• Connection ping, traceroute
• Routing table
• R1show interfaces r1show ip
  protocols r1show ip route r1show ip arp
• .

21
Static Routes Configuration Example

• r1configr1(config)ip route 10.4.0.0
  255.255.0.0 10.3.1.2
• r1(config)ip route 10.1.1.1 255.255.0.0
  10.1.1.2 r1(config)ctrl-zr1show ip route

Give static routes configuration for following
network
10.1.1.1/16
10.1.1.2/16
10.4.1.1/16
10.4.1.2/16
r1
r2
10.3.1.2/16
10.3.1.3/16
22
RIP Configuration Example

• r1configr1(config)router ripr1(config-router)
  network 192.168.1.0r1(config-router)network
  172.1.0.0r1(config-router)ctrl-Zr1show ip
  protocols

192.1.1.2/16
192.168.1.1/16
10.4.1.1/16
10.4.1.2/16
r1
r2
172.1.1.1/16
172.1.1.2/16
23
OSPF Configuration Example

• RTA hostname RTA
• RTA interface Loopback0
• RTA ip address 203.250.13.41 255.255.255.0
• RTA interface Ethernet0
• RTA ip address 203.250.14.1 255.255.255.0
• RTA router ospf 10
• RTA network 203.250.13.41 0.0.0.0 area 1
• RTA network 203.250.0.0 0.0.255.255 area 0.0.0.0

24
Save Configuration File

• TFTP Startup Running

25
Clear Previous Routing Configuration

• R1(config)router no static
• R1(config)router no ospf 10
• R1(config)router no rip
• R1(config)ctrl-z

26
An Full Example of Online Configuration

• Routergtenable
• Routerconfig
• Router(config)hostname r1
• r1(config)interface serial 0
• r1(config-if)ip address 172.1.1.1 255.255.0.0
• r1(config-if)no shutdown
• r1(config-if)ctrl-z
• r1show interface serial 0
• r1config
• r1(config)interface ethernet 0
• r1(config-if)ip address 192.168.1.1
  255.255.255.0
• r1(config-if)no shutdown
• r1(config-if)ctrl-z

• 14. r1show interface ethernet 0
• 15. r1config
• 16. r1(config)router rip
• 17. r1(config-router)network 172.1.0.0
• 18. r1(config-router)network 192.168.1.0
• 19. r1(config-router)ctrl-z
• 20. r1show ip protocols
• 21. r1ping 192.168.1.1
• 22. r1config
• 23. r1(config)ip name-server 192.168.1.10
• 24. r1(config)ctrl-z
• 25. r1ping www.lab.umkc.edu
• 26. r1copy running startup
• 27. r1exit