This article is all about how to configure a Cisco router as a DHCP client and assign an IP address to it. In the previous articles, we learn that how to configure a single router as a DHCP server and we also learn that how to configure 4 and more than 4 DHCP server on a single router. Now in this tutorial, we learn that how to configure a Cisco router as a DHCP client and also assign an IP address to it. To explain this process in detail we take a lab in Cisco packet tracer in which we take two Cisco routers and joined them together with an ethernet cable and then we configure a router as a DHCP server and we configure remaining router as a DHCP client and then provide IP address to it by a router which is configured as a DHCP server.
Also Read: How to configure a single router as a DHCP router
Now here we take a Cisco packet tracer lab to perform this configuration successfully. And in this lab, we will take two routers and here two router R1 and R2 will be connected to each other.
In above lab, we clearly saw that two routers were present there R1 and R2.
Now in this lab, I configure the R1 router as a DHCP server and remaining router R2 as a DHCP client and then provide IP address to them by router R1 which act as a DHCP server. So let’s start to configure router R1
For router R1 use given blow commands to configure router as a DHCP server
— System Configuration Dialog —
Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int fa0/0
R1(config-if)#ip address 1.0.0.1 255.0.0.0
R1(config-if)#no shut
R1(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
R1(config-if)#exit
R1(config)#ip dhcp pool rahul
R1(dhcp-config)#network 1.0.0.0 255.0.0.0
R1(dhcp-config)#default-router 1.0.0.1
R1(dhcp-config)#exit
Now our router R1 will be configured as a DHCP server and now we go to router R2 and configure R2 as a DHCP client.
For router R2 as a DHCP client use below-given commands
— System Configuration Dialog —
Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R2
R2(config)#int fa0/0
R2(config-if)#no shut
R2(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R2(config-if)#ip address dhcp
%DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/0 assigned DHCP address 1.0.0.2, mask 255.0.0.0, hostname Router1
R2(config-if)#exit
Here we will use IP address DHCP command for automatically assign an IP address on router R2 on interface fa0/0
NOTE: – Ip address DHCP command will assign IP on the interface on which you will run this command and it will ask for an IP from DHCP server. Here in our this lab DHCP server is router R1. But if you do not want to make a DHCP server on your router then you can also use a dedicated machine as a DHCP server instead of a router as a DHCP server. This command is work in both the cases.
Now test router R2 interface whether it is got an IP address on not by given below command
R2>enable
R2#show interface fa0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0006.2a2c.b501 (bia 0006.2a2c.b501)
Internet address is 1.0.0.2/8
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of “show interface” counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2 packets input, 186 bytes, 0 no buffer
Received 2 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
2 packets output, 178 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
THAT’S IT
If you have any queries related to this feel free to ask through the comment section. If you have any new ideas regarding this topic share through the comment section.
