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Setting router DHCP in packet tracer
1. Set IP address
1-1. Check it
2. Set DHCP at router
2-1. Check it
3. Set DHCP at PC
3-1. Check it
4. Conclusion
1. Set IP address
For demonstration, put a router, switch and three PC.
Set a IP address for network.
Than type
Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface FastEthernet 0/0 Router(config-if)#ip address 192.168.0.1 255.255.255.0 Router(config-if)#no shutdown Router(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 Router(config-if)#exit Router(config)#exit Router# %SYS-5-CONFIG_I: Configured from console by console Router#exit
Long code version
Router>en Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#in f 0/0 Router(config-if)#i ad 192.168.0.1 255.255.255.0 Router(config-if)#n sh Router(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 Router(config-if)#e Router(config)#ex Router# %SYS-5-CONFIG_I: Configured from console by console Router#ex
Short code version (Extreme)
Both code function exactly same way in this scenario
1-1. Check it
After this you can check it with CLI or GUI like this.
IP address is 192.168.0.1 and Subnet Mask is 255.255.255.0 (/24)
GUI version
CLI version
Type show show running-config or sh r
Router>enable Router#show running-config Building configuration... Current configuration : 740 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname Router ! ! ! ! ! ! ! ! no ip cef no ipv6 cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 192.168.0.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 no ip address duplex auto speed auto shutdown ! interface Serial2/0 no ip address clock rate 2000000 shutdown ! interface Serial3/0 no ip address clock rate 2000000 shutdown ! interface FastEthernet4/0 no ip address shutdown ! interface FastEthernet5/0 no ip address shutdown ! ip classless ! ip flow-export version 9 ! ! ! ! ! ! ! line con 0 ! line aux 0 ! line vty 0 4 login ! ! ! end
2. Set DHCP at router
Go to router and type command like this.
Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#ip dhcp pool last72 Router(dhcp-config)#network 192.168.0.0 255.255.255.0 Router(dhcp-config)#default-router 192.168.0.1 Router(dhcp-config)#exit Router(config)#exit Router#
Replace last72 to name of pool you want to name. (Line 4)
Put network id and subnet mask of your desired network (Line 5)
Put gateway address of network (Line 6)
2-1. Check it
show running-config in CLI
Router>enable Router#show running-config Building configuration... Current configuration : 783 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname Router ! ! ! ! ! ip dhcp pool last72 network 192.168.0.0 255.255.255.0 default-router 192.168.0.1 ! ! ! no ip cef no ipv6 cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 192.168.0.1 255.255.255.0 duplex auto speed auto ! interface FastEthernet1/0 no ip address duplex auto speed auto shutdown ! interface Serial2/0 no ip address shutdown ! interface Serial3/0 no ip address shutdown ! interface FastEthernet4/0 no ip address shutdown ! interface FastEthernet5/0 no ip address shutdown ! ip classless ! ip flow-export version 9 ! ! ! ! ! ! ! line con 0 ! line aux 0 ! line vty 0 4 login ! ! ! end
DHCP setting can be check in line 18 to line 20
3. Set DHCP at PC
To finish this setting, PC need to be configured.
In command prompt mode, type ipconfig /renew
C:\>ipconfig /renew IP Address......................: 192.168.0.2 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 192.168.0.1 DNS Server......................: 0.0.0.0
Or in Desktop tab, click IP Configuration.
Change Static to DHCP, after a while, an IP address will be assigned with message at the top right saying DHCP request successful.
Do same configuration for other 2 PC as well.
3-1. Check it
Type ipconfig at command prompt (cmd)
Packet Tracer PC Command Line 1.0 C:\>ipconfig FastEthernet0 Connection:(default port) Link-local IPv6 Address.........: FE80::204:9AFF:FEB0:9CD1 IP Address......................: 0.0.0.0 Subnet Mask.....................: 0.0.0.0 Default Gateway.................: 0.0.0.0 C:\>ipconfig /renew IP Address......................: 192.168.0.3 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 192.168.0.1 DNS Server......................: 0.0.0.0 C:\>ipconfig FastEthernet0 Connection:(default port) Link-local IPv6 Address.........: FE80::204:9AFF:FEB0:9CD1 IP Address......................: 192.168.0.3 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 192.168.0.1 C:\>
Before set DHCP (line 6 to line 9), there is no IP address
But after set DHCP (line 11 to line 16), PC got an IP address (line 22 to line 25)
Or you can put your mouse over the PC icon in packet tracer to see details including IP address.
Finally, by ping each other we can check the connection
Click the Add Simple PDU on the right tab.
Click one PC that will send ping and click another PC to receive the ping.
After that, you need to click the arrow button on bottom right. So that you can see the result.
4. Conclusion
Simple DHCP setting. Final look can be look like this. Otherwise you can look my demo file.
Last72_Router_DHCP.pktEnd
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