Configuring a Router as a DHCP Server for 192.168.100.0/23 LAN with Reserved Addresses for Static Assignment

Which set of commands will configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment?

To configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment, you can use the following set of commands.

1. Enter global configuration mode:
“`
Router> enable
Router# configure terminal
“`

2. Create a DHCP pool and specify the network range to be assigned to DHCP clients. In this case, the network range would be 192.168.100.11 to 192.168.101.254:
“`
Router(config)# ip dhcp pool LAN_POOL
Router(dhcp-config)# network 192.168.100.0 255.255.254.0
Router(dhcp-config)# default-router 192.168.100.1
“`

3. Configure DHCP exclusions to reserve the first 10 and the last addresses for static assignment. Assuming the first usable IP address is 192.168.100.1 and the last usable IP address is 192.168.101.254:
“`
Router(dhcp-config)# ip dhcp excluded-address 192.168.100.1 192.168.100.10
Router(dhcp-config)# ip dhcp excluded-address 192.168.101.255
“`

4. Configure additional DHCP options as needed. For example, to specify the DNS server address:
“`
Router(dhcp-config)# dns-server 8.8.8.8
“`

5. Exit DHCP pool configuration:
“`
Router(dhcp-config)# exit
“`

6. Enable the DHCP service on the router’s interface connected to the LAN:
“`
Router(config)# interface
Router(config-if)# ip address 192.168.100.1 255.255.254.0
Router(config-if)# no shutdown
Router(config-if)# ip dhcp server
“`

Make sure to replace “ with the actual interface name connected to the LAN.

These commands will configure the router as a DHCP server for the specified LAN, assigning IP addresses from 192.168.100.11 to 192.168.101.254 while reserving the first 10 addresses and the last address for static assignment.

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