Case Study On DHCP (Dynamic Host Configuration Protocol)

DHCP 

(Dynamic Host Configuration Protocol)

Dynamic Host Configuration Protocol (DHCP)to assign IP address to hosts. Administrator uses DHCP for small networks to vast networks. Cisco routers and all other companies routers support DHCP.

List of the information a DHCP servercan provide:

·         IP address

·         Subnet mask

·         Domain name

·         Default gateway (routers)

·         DNS

So this the network in which ill use DHCP to get IP addresses, Subnet mask Default gateway.

  

Commands used to implement DHCP are

Router

Router(config)#ipdhcp pool abc

Router(dhcp-config)#network 10.0.0.0 255.0.0.0

Router(dhcp-config)#default-router 10.0.0.1

Router(dhcp-config)#dns-server 1.1.1.1

Router(dhcp-config)#exit

Router(config)#show ipdhc

Router(config)#show ipdhcpbing

Router(config)#show ipdhcp bind

Router(config)#do show ipdhcp binding

IP address       Client-ID/              Lease expiration        Type

                 Hardware address

10.0.0.3         00D0.D3A4.7C76           --                     Automatic

10.0.0.5         0001.4284.A84B           --                     Automatic

10.0.0.4         000A.41B3.E95B           --                     Automatic

10.0.0.2         0090.2B58.1B20           --                     Automatic

Router1

Router1>en

Router1#config t

Router1(config)#ipdhcp pool abc

Router1(dhcp-config)#network 20.0.0.0 255.0.0.0

Router1(dhcp-config)#default-router 20.0.0.1

Router1(dhcp-config)#dns-server 1.1.1.1

To check for hosts connected with Router assigned ip address

Router1(config)#do show ipdhcp binding

IP address       Client-ID/              Lease expiration        Type

                 Hardware address

20.0.0.2         0030.F293.E51D           --                     Automatic

20.0.0.5         0001.63E0.3787           --                     Automatic

20.0.0.4         0002.1728.BAA9           --                     Automatic

20.0.0.3         000A.F3D8.401B           --                     Automatic

 Router 2

Router(config)#ipdhcp pool abc

Router(dhcp-config)#network 30.0.0.0 255.0.0.0

Router(dhcp-config)#default-router 30.0.0.1

Router(dhcp-config)#dns-server 1.1.1.1

Router(config)#do show ipdhcp binding

IP address       Client-ID/              Lease expiration        Type

                 Hardware address

30.0.0.5         00D0.586C.A6DC           --                     Automatic

30.0.0.3         0006.2A3E.0A44           --                     Automatic

30.0.0.4         0030.F201.E53B           --                     Automatic

30.0.0.2         00D0.5848.1D94           --                     Automatic