show ip dhcp-client
options
User EXEC mode
The DHCP client must be enabled to be able to view the output of this command correctly.
The
show ip dhcp-client options command displays the following information:
| Output field | Description |
|---|---|
| DHCP Client Received Option(s) | Specifies the options the client has received, such as the dynamic IP address, subnet mask, lease time, server IP address, default-router address, TFTP server address, boot filename, DNS-server address, host name, and vendor-specific information. |
The following example displays the DHCP client options received from the server.
device(config)# show ip dhcp-client options
DHCP Client Received Option(s) :
Client Received Options on port: 1/1/2
Dynamic IP address: 110.1.1.2
Subnet mask: 255.255.255.0
Lease Time: 2400
Server IP Address (option 54): 110.1.1.1
default-router address (option 3): 110.1.1.1
TFTP server address (option 150): 110.1.1.20
TFTP Server Name (option 66): CHN-EL1-E03-65-112
Boot filename (option 67): boot.cfg
dns-server address (option 6): 1.1.1.10
DNS Server Name (option 15): ruckuscom
Host Name (option 12): dhcp_host
Vendor Specific Info (option 43): None
The following example displays the DHCP client options including the image type and flash location.
device(config)# show ip dhcp-client options
DHCP Client Received Option(s) :
Client Received Options on port: 1/1/35
Dynamic IP address: 65.1.1.2
Subnet mask: 255.255.255.0
Lease Time: 86400
Server IP Address (option 54): 65.1.1.1
default-router address (option 3): None
TFTP server address (option 150): 65.1.1.1
TFTP Server Name (option 66): None
Boot filename (option 67): FI08070_Manifest.txt router primary
dns-server address (option 6): None
DNS Server Name (option 15): None
Host Name (option 12): None
Vendor Specific Info (option 43): None
The following example displays information for the DHCP client when the vendor specific information (VSI) option information is received from the DHCP server as text (create default ve).
device(config)# show ip dhcp-client options
DHCP Client Received Option(s) :
Client Received Options on port: 2/1/21
Dynamic IP address: 20.1.1.2
Subnet mask: 255.255.255.0
Lease Time: 86400
Server IP Address (option 54): 20.1.1.1
default-router address (option 3): 20.1.1.1
TFTP server address (option 150): 20.1.1.1
TFTP Server Name (option 66): None
Boot filename (option 67): None
dns-server address (option 6): 110.1.1.20
DNS Server Name (option 15): brd.com
Vendor Specific Info (option 43): create default ve
The following example displays information for the DHCP client when the VSI option information is received from the DHCP server in the expected TLV format data (sub-option data in comma-separated IP address format).
device(config)# show ip dhcp-client options
DHCP Client Received Option(s) :
Client Received Options on port: 2/1/21
Dynamic IP address: 20.1.1.2
Subnet mask: 255.255.255.0
Lease Time: 86400
Server IP Address (option 54): 20.1.1.1
default-router address (option 3): 20.1.1.1
TFTP server address (option 150): 20.1.1.1
TFTP Server Name (option 66): None
Boot filename (option 67): None
dns-server address (option 6): 110.1.1.20
DNS Server Name (option 15): brd.com
Vendor Specific Info (option 43): TLV Format Data
(Code 6) : 12.12.12.12 13.13.13.13
The following example displays output for the DHCP client when the VSI option information is received from the DHCP server in TLV format, but with sub-option data as non-readable characters.
device(config)# show ip dhcp-client options
Client Received Options on port: 2/1/21
Dynamic IP address: 20.1.1.2
Subnet mask: 255.255.255.0
Lease Time: 86400
Server IP Address (option 54): 20.1.1.1
default-router address (option 3): 20.1.1.1
TFTP server address (option 150): 20.1.1.1
TFTP Server Name (option 66): None
Boot filename (option 67): None
dns-server address (option 6): 110.1.1.20
DNS Server Name (option 15): brd.com
Vendor Specific Info (option 43): TLV Format Data
( Code 6 ) :
The following example displays output for the DHCP client when the VSI option information is received from the DHCP server in ASCII format, including the SmartZone IP Address received.
device(config)# show ip dhcp-client options
DHCP Client Received Option(s) :
Client Received Options on port: v1
Dynamic IP address: 20.20.20.2
Subnet mask: 255.255.255.0
Lease Time: 300
Server IP Address (option 54): 20.20.20.1
default-router address (option 3): None
TFTP server address (option 150): 20.20.20.1
TFTP Server Name (option 66): None
Boot filename (option 67): None
dns-server address (option 6): None
DNS Server Name (option 15): None
Host Name (option 12): None
Vendor Specific Info (option 43): ASCII
( Code 7 ) : 10.10.10.10,12.12.12.12
| Release version | Command history |
|---|---|
| 08.0.40 | This command was introduced. |
| 08.0.70 | This command was modified to show DHCP client options in the new option format. |
| 08.0.80 | This command was modified to include information in the output for option 67 enhancements where both the image type and flash location are specified by the user. This command was also modified to display information for option 43 enhancements where data related to the VSI received from the SmartZone DHCP server is displayed. |
| 09.0.00 | This command output was modified to display information for option 43 enhancements where data related to the VSI received from the SmartZone DHCP server is displayed in ASCII format including the SmartZone IP Address received. |