DHCP Option

 Name

 Description

1

 Subnet Mask 

 Specifies the clients subnet mask 

3

 Router 

 Specifies a list of routers for the clients subnet 

6

 Domain Name Server 

 Specifies a list of Doman Name servers 

12

 Host Name 

 Specifies the name of the client 

15

 Domain Name 

 Specifies te domain name to be used when resolving hostnames 

50

 DHCP Requested IP Address 

 Used if the client requests a particular IP address to be assigned 

51

 DHCP IP Address Lease Time 

 Specifies the lease time for the IP address in seconds 

52

 DHCP Option Overlaod 

 Specifies if the 'file' and/or 'sname' fields are used for DHCP options 

53

 DHCP Message Type 

 Specifies the type of the DHCP message 

54

 DHCP Server Identifier 

 Identifies a particular DHCP server, thus the client can distinguish multiple DHCP servers 

55

 DHCP Parameter Request List 

 Used if the DHCP client requests values for specifeid configuration parameters 

56

 DHCP Message 

 Used to provide an error message 

57

 DHCP Maximum DHCP Message Size 

 Specifies the maximum length DHCP message it is willing to accept 

58

 DHCP Renewal (T1) Time Value 

 Specifies the time interval until the client goes to the RENEWING state 

59

 DHCP Rebinding (T2) Time Value 

 Specifies the time interval until the client goes to the REBINDING state 

60

 DHCP Vendor Class Identifier 

 Used to transport vendor specific information 

61

 DHCP Client-identifier 

 The unique identifier of a client, thus the server can distinguish multiple DHCP clients 

66

 DHCP TFTP Server Name 

 Specifies the TFTP server name when the 'sname' field has been used for DHCP options 

67

 DHCP Bootfile Name 

 Specifies the bootfile when the 'file' field has been used for DHCP options