Qtech QSW-8200-28T-POEAC- DC [7/79] Chapter 1 commands for dhcp

User Manual

Chapter 1. Commands for DHCP 7

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Chapter 1 COMMANDS FOR DHCP

1.1 Commands for DHCP Server Configuration

1.1.1 bootfile

 Command: bootfile <filename>

 no bootfile

 Function: Sets the file name for DHCP client to import on boot up; the “no bootfile”

command deletes this setting.

 Parameters: <filename> is the name of the file to be imported, up to 255 characters

are allowed.

 Command Mode: DHCP Address Pool Mode

 Usage Guide: Specify the name of the file to be imported for the client. This is usually

used for diskless workstations that need to download a configuration file from the

server on boot up. This command is together with the “next sever”.

 Example: The path and filename for the file to be imported is “c:\temp\nos.img”

 Switch(dhcp-1-config)#bootfile c:\temp\nos.img

 Related Command: next-server

1.1.2 clear ip dhcp binding

 Command: clear ip dhcp binding {<address> | all}

 Function: Deletes the specified IP address-hardware address binding record or all IP

address-hardware address binding records.

 Parameters: <address> is the IP address that has a binding record in decimal format. all

refers to all IP addresses that have a binding record.

 Command mode: Admin Mode.

 Usage Guide: “show ip dhcp binding” command can be used to view binding

information for IP addresses and corresponding DHCP client hardware addresses. If the

DHCP server is informed that a DHCP client is not using the assigned IP address for

some reason before the lease period expires, the DHCP server would not remove the

binding information automatically. The system administrator can use this command to

delete that IP address-client hardware address binding manually, if “all” is specified,

then all auto binding records will be deleted, thus all addresses in the DHCP address

pool will be reallocated.

 Example: Removing all IP-hardware address binding records.

 Switch#clear ip dhcp binding all

 Related Command: show ip dhcp binding

1.1.3 clear ip dhcp conflict

 Command: clear ip dhcp conflict {<address> | all }