Administrasi & Design Jaringan Muhammad Anshari

CISCO IOS Software and CISCO LAN SWITCHES

Tujuan Kuliah ini Memperkenalkan CISCO CLI commands Memperkenalkan IOS CISCO proprietary software dan ciri-cirinya, konsep Memperkenalkan CISCO LAN switches ciri dan konsep Memahami konfigurasi router IOS upgrade Perkenalan Switch IOS dan konfigurasi Konfigurasi IOS

CLI IOS Software CLI- Command line interface CISCO menggunakan CLI untuk ke terminal user command line interface Metode mengaksesnya –Console port - Serial console cable –Aux port – Modem –Telnet – via connected network – 5 concurrent sessions vty0-4 Setiap akses memiliki password yang terpisah

Console port -RS232 serial port seperti Com 1 dan 2 pada PC -Memiliki RJ45 konektor tapi menggunakan kabel yang berbeda – rollover cable

CLI MODES CLI modes User exec mode (user mode) Perintah yang Non critical dan tidak ada konfigurasi Privileged exec mode (privileged mode)

Help Commands Help commands - help -Command ? -command parm?

Command edits Command Edit  Lihat Table 7-4  Turning terminal editing on/off

SHOW Commands Show command Memunculkan system variables dan settings

Debug Command Debug commands: Monitor proses dan log stats dan pesan (sys log messages) Ketika difungsikan akan berakibat secara drastis pada kinerja router dan kinerja jaringan Matikan dengan perintah : debug all / no debug all

Configuration Mode Configuration modes Masuk user mode Kemudian masuk privileged mode Kemudian masuk config mode Some commands use sub commands Melihat proses konfigurasi dengan perintah show running-config

Router Memory RAM; biasa disebut DRAM, RAM digunakan router untuk working storage, file konfigurasi yang sedang berjalan disimpan disini. ROM; menyimpan bootable IOS image, ROM berisi code yang digunakan untuk boot router sampai router tahu dimana mendapatkan full IOS image

Router Memory Flash memory; jenisnya EEPROM atau PCMCIA card, fungsinya untuk menyimpan secara penuh IOS image dan tempat default dari router untuk boot, tempat ini juga bisa menyimpan file konfigurasi NVRAM; menyimpan stratup config file

Router Interfaces Merujuk kepadsa setiap port atau slot Router yang lebih besar menggunakan slot/port i.e. 2/3 slot 2 port 3

Start up configuration Start up -Startup configuration file for the IOS -Disebut startup-config -Disimpan di NVRAM Copying: -Copy command Copy dari atau NVRAM (stratup-config), RAM (running-config ) atau TFTP -Fig 7-5 -Fig 7-6 has old style commands

Configuration Interactive configuration facility Starts on bootup or by using the command “setup” Walk through example 7-5

IOS Upgrade Upgrading the IOS What we have been dealing with is simply a config file? The router has a complete operating system (IOS) in flash memory Flash is like an electronic re-writable disk drive Sometimes the operating system needs to be upgraded (new features)

Downloading IOS Downloading the IOS Fig 7-8 Download the file from the Cisco web site Put on a PC with a TFTP server Example 7-6 Use the copy tftp flash command (at router CLI) to download into router

Download steps -Preliminary download Information -5 points Page 196

IOS Name IOS name (p197) -First part is hardware platform- c2600 -Followed by the feature set- js -File format- 1 (relocatable and not compressed) -Version number: A “Z” at the end means file is zipped c2600-js-1_ bin

Show flash  Verify Show flash  Limited IOS in ROM  Limited backup IOS in ROM in case IOS in flash is missing or corrupt  This mode is called rxboot mode  Can TFTP to a TFTP server (on the same subnet only)  ROMMON  Another limited IOS in ROM for debugging and password recovery

Boot system commands 1Boot system command oOptions Table 7-6

CISCO LAN Switches  Switches  We use 2950 with 24 10/100 Mbps ports  Interface numbering slot/port  Inbuilt ports are slot 0 i.e. 0/1, 0/2  LEDs on front panel – Table POST

CISCO LAN Switches  Switch IOS  Older Catalyst switches had different interface  New Cisco switches have the same CLI as the routers  Access methods are the same as the routers  Fig 8-2 Interactive switch configuration

Router Configuration- Lab 6&7 GAD>enable ………….(User mode) Password: (Secret password) GAD#config t …….. (Privilege mode mode) Enter configuration commands, one per line. End with CNTL/Z. GAD(config)#interface fastethernet0/0 GAD(config-if)#ip address GAD(config-if)#no shutdown GAD(config-if)#exit GAD(config)#interface s0/1 GAD(config-if)#ip address GAD(config-if)#clockrate GAD(config-if)#no shutdown GAD(config-if)#exit GAD(config)#router rip GAD(config-router)#network GAD(config-router)#network GAD(config-router)#exit GAD(config)#exit

Interface and pinging GAD#show interface s0/1 Serial0/1 is up, line protocol is up Hardware is PowerQUICC Serial Description: Link:GAD to BHM Carrier:BellSouth Circuit ID:10DHDG Speed:1.544Mbps Internet address is /16 MTU 1500 bytes, BW 128 Kbit, DLY usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Successful ping GAD#ping Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to , timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 64/65/72 ms

GAD#show ? (Using Show ? command_) access-expression List access expression access-lists List access lists accounting Accounting data for active sessions adjacency Adjacent nodes aliases Display alias commands appletalk AppleTalk information arap Show Appletalk Remote Access statistics arp ARP table async Information on terminal lines used as router interfaces backup Backup status bridge Bridge Forwarding/Filtering Database [verbose] buffers Buffer pool statistics c2600 Show c2600 information cca CCA information cdapi CDAPI information cdp CDP information cef Cisco Express Forwarding class-map Show QoS Class Map clock Display the system clock compress Show compression statistics

Conclusion  Read chapter 9 and 10 for next week  VLANs and Trunking

REFERENCES 1. CCNA INTRO Exam Certification Guide (CCNA Self-Study, ), First Edition by Wendell Odom, Cisco Press, 2003 (Chapter 7 and 8)