Cisco 500 Series Administration Manual page 66

Administration: File Management
Auto Configuration/Image Update via DHCP
Cisco 500 Series Stackable Managed Switch Administration Guide
interfaces and continues the process of Auto Configuration/Image
Update with the first answering TFTP server.
Download Protocol Selection
• The copy protocol (SCP/TFTP) is selected, as described in
Protocols (TFTP or
SCP
• When downloading using SCP, the device accepts any specified SCP/SSH
server (without authentication) if either of the following is true:
- The SSH server authentication process is disabled. By default the SSH
server authentication is disabled in order to allow downloading
configuration file for devices with factory default configuration (for
example out-of-box devices).
- The SSH Server is configured in the SSH Trusted Servers list.
If the SSH server authentication process is enabled, and the SSH server is
not found in the SSH Trusted Servers list, the Auto Configuration process is
halted.
• If the information is available, the SCP server is accessed to download the
configuration file or image from it.
Auto Configuration/Image Update Trigger
Auto Configuration/Image Update via DHCPv4 is triggered when the following
conditions are fulfilled:
• The IP address of the device is dynamically assigned/renewed at reboot, or
explicitly renewed by administrative action, or automatically renewed due
to an expiring lease.
page.
• If Auto Image Update is enabled, the Auto Image Update process is
triggered when an indirect image file name is received from a DHCP server
or a backup indirect image file name has been configured. Indirect means
that this is not the image itself, but rather a file that holds the path name to
the image.
• If Auto Configuration is enabled, the Auto Configuration process is triggered
when the configuration file name is received from a DHCP server or a
backup configuration file name has been configured.
SCP).
Explicit renewal can be activated in the IPv4 Interface
4
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