Cisco 350 Series Administration Manual page 136

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Download Protocol Selection
• The copy protocol (SCP/TFTP) is selected, as described in
or SCP).
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.
Explicit renewal can be activated in the IPv4 Interface 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.
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
Administration: File Management
DHCP Auto Configuration/Image Update
Download Protocols (TFTP