cisco ccna- dhcp server

CISCO CCNADHCP SERVERTo watch our Cisco CCNA Video Trainings Please Check out the link below:www.asmed.com/c1

ASM Educational Center Inc. (ASM)Where Training, Technology & Service ConvergePhone: (301) 984-7400

Cisco CCNA-DHCP Server

In this lab we are trying to make our Cisco Router Act as a DHCP server, that is R1 will give IP address 10.10.10.0/24 to left side Pc and it will give the IP address 20.20.20.0/24 to right side of PC. The Goal is Prepare you for your Cisco CCNA Certification Exam.

Cisco CCNA-DHCP Server

DHCP goes thru these steps : DORA Step 1)   D= Discover packet Step 2)   O= offer packet Step 3)   R=Request packet Step 4)   A=Acknowledge packeHint : when you configure the DHCP; your LAN must match with the IP address of yourint f0/0  and Int f0/1.

Cisco CCNA-DHCP Server

R1#show ip int brief                                                                                                                 

Hint : Always start with ip DHCP?

Interface  IP-Address OK?   Method Status

Protocol

FastEthernet0/0  

10.10.10.100  

YES manual up up

FastEthernet0/1 

20.20.20.100

YES manual up up

Vlan1 unassigned YES Unset Administratively

down down

Cisco CCNA-DHCP Server

Now I will go create a scopeStep 1) Define your pool of address

R1#R1#config tR1(config)#ip dhcp ?excluded-address  Prevent DHCP from assigning certain addressespool              Configure DHCP address poolsR1(config)#ip dhcp POOL ?WORD  Pool name

Cisco CCNA-DHCP Server

R1(config)#ip dhcp POOL lan100R1(dhcp-config)#?default-router  Default routersdns-server      Set name serverexit            Exit from DHCP pool configuration modenetwork         Network number and maskno              Negate a command or set its defaultsoption          Raw DHCP options

Cisco CCNA-DHCP Server

R1(dhcp-config)#NETWork ?A.B.C.D  Network number in dotted-decimal notationR1(dhcp-config)#NETWork 10.10.10.0 ?A.B.C.D  Network maskR1(dhcp-config)#NETWork 10.10.10.0 255.255.255.0R1(dhcp-config)#default-router ?A.B.C.D  Router’s IP addressR1(dhcp-config)#default-router 10.10.10.100

Cisco CCNA-DHCP Server

Here is my show runip dhcp pool lan100network 10.10.10.0 255.255.255.0default-router 10.10.10.100

Cisco CCNA-DHCP Server

Step 2) Lets exclude some addressR1#config tEnter configuration commands, one per line.  End with CNTL/Z.R1(config)#ip dhcp ?excluded-address  Prevent DHCP from assigning certain addressespool              Configure DHCP address poolsR1(config)#ip dhcp excR1(config)#ip dhcp excluded-address ?

Cisco CCNA-DHCP Server

A.B.C.D  Low IP addressR1(config)#ip dhcp excluded-address 10.10.10.1 ?A.B.C.D  High IP address<cr>R1(config)#ip dhcp excluded-address 10.10.10.1 10.10.10.20 ?<cr>R1(config)#ip dhcp excluded-address 10.10.10.1 10.10.10.20

Cisco CCNA-DHCP Server

Lets see your show runip dhcp excluded-address 10.10.10.1 10.10.10.20!ip dhcp pool lan100network 10.10.10.0 255.255.255.0default-router 10.10.10.100!

Cisco CCNA-DHCP Server

Now I will create a another scope for LAN 20.20.20.0/2R1#config tEnter configuration commands, one per line.  End with CNTL/Z.R1(config)#ip dhcp ?excluded-address  Prevent DHCP from assigning certain addressespool              Configure DHCP address poolsR1(config)#ip dhcp poolR1(config)#ip dhcp pool ?WORD  Pool nameR1(config)#ip dhcp pool lan200

Cisco CCNA-DHCP Server

R1(dhcp-config)#?default-router  Default routersdns-server      Set name serverexit            Exit from DHCP pool configuration modenetwork         Network number and maskno              Negate a command or set its defaultsoption          Raw DHCP options

Cisco CCNA-DHCP Server

R1(dhcp-config)#netwR1(dhcp-config)#network 20.20.20.0 ?A.B.C.D  Network maskR1(dhcp-config)#network 20.20.20.0 255.255.255.0R1(dhcp-config)#deR1(dhcp-config)#default-router 20.20.20.100R1(dhcp-config)#

Cisco CCNA-DHCP Server

Here is my show runip dhcp excluded-address 10.10.10.1 10.10.10.20!ip dhcp pool lan100network 10.10.10.0 255.255.255.0default-router 10.10.10.100ip dhcp pool lan200network 20.20.20.0 255.255.255.0default-router 20.20.20.100

Cisco CCNA-DHCP Server

Now I will give out 2nd exclusionR1#config tEnter configuration commands, one per line.  End with CNTL/Z.R1(config)#ip dhcp ?excluded-address  Prevent DHCP from assigning certain addressespool              Configure DHCP address pools

Cisco CCNA-DHCP Server

R1(config)#ip dhcp excluded-address ?A.B.C.D  Low IP addressR1(config)#ip dhcp excluded-address 20.20.20.1 20.20.20.20 ?<cr>R1(config)#ip dhcp excluded-address 20.20.20.1 20.20.20.20

Cisco CCNA-DHCP Server

Here is my show runip dhcp excluded-address 10.10.10.1 10.10.10.20ip dhcp excluded-address 20.20.20.1 20.20.20.20!ip dhcp pool lan100network 10.10.10.0 255.255.255.0default-router 10.10.10.100

Cisco CCNA-DHCP Server

ip dhcp pool lan200network 20.20.20.0 255.255.255.0default-router 20.20.20.100!interface FastEthernet0/0ip address 10.10.10.100 255.255.255.0duplex auto speed auto !

Cisco CCNA-DHCP Server

interface FastEthernet0/1ip address 20.20.20.100 255.255.255.0duplex autospeed auto

***Now If  I go to my pc I will say obtain IP address; and you will see IP address is given to each PC on left side and right side and we should be able to ping from left to right.

ASM Educational Center Inc. (ASM)

Where Training, Technology & Service Converge

To watch our Cisco CCNA Video Trainings Please Check out the link below:www.asmed.com/c1Phone: (301) 984-7400