Basic Operation Guide 2014/02

Example 70 Startup config output for a range of interfaces for a specific VLAN
HP Switch(vlan-5)# show config interface C10-C13
Startup configuration:
interface C10
untagged vlan 5
exit
interface C11
untagged vlan 5
exit
interface C12
untagged vlan 5
exit
interface C13
untagged vlan 5
exit
Automatic configuration update with DHCP Option 66
HP switches are initially booted up with the factory-shipped configuration file. This feature provides
a way to automatically download a different configuration file from a TFTP server using DHCP
Option 66. The prerequisites for this to function correctly are:
• One or more DHCP servers with Option 66 are enabled
• One or more TFTP servers have the desired configuration file
CAUTION: This feature must use configuration files generated on the switch to function correctly.
If you use configuration files that were not generated on the switch and then enable this feature,
the switch may reboot continuously.
Enabling configuration file update using Option 66
DHCP Options 66/67 allows an option to include an IP address of a TFTP Server (Option 66) and
the name of a configuration file (Option 67) in a DHCP ACK packet. After the switch has completed
the DHCP transaction on the Primary VLAN, the two options will cause the switch to download the
configuration file from the TFTP server. After the configuration file has been successfully downloaded,
the switch compares the contents of the new configuration file with the existing configuration file.
If the contents are different, then the existing configuration file is replaced with the new file and
the switch initiates a reboot.
To enable the configuration update using Option 66 use the following command:
Syntax:
[no]dhcp config-file-update
Default: Enabled with DHCP option values populated by default.
Automatic configuration update with DHCP Option 66 89