Configuration Guide User guide

1030 FastIron Configuration Guide
53-1002494-02
Configuring IP parameters – Layer 3 Switches
• This feature is not supported together with DHCP snooping.
The following configuration rules apply to flash image update:
• To enable flash image update (ip dhcp-client auto-update enable command), also enable
auto-configuration (ip dhcp-client enable command).
• The image filename to be updated must have the extension .bin.
• The DHCP option 067 bootfile name will be used for image update if it has the extension .bin.
• The DHCP option 067 bootfile name will be used for configuration download if it does not have
the extension .bin.
• If the DHCP option 067 bootfile name is not configured or does not have the extension .bin,
then the auto-update image will not occur.
How DHCP Client-Based Auto-Configuration and Flash image update works
Auto-Configuration and Auto-update are enabled by default. To disable this feature, refer to
“Disabling or re-enabling Auto-Configuration” on page 1034 and “Disabling or re-enabling
Auto-Update” on page 1034, respectively.
The steps of the Auto-Configuration and Auto-update process are described in Figure 118, and in
the description that follows the flowchart.