Cisco 350XG series Administration Manual page 98

Administration: File Management
DHCP Auto Configuration/Image Update
Cisco 350XG & 550XG Series 10G Stackable Managed Switches
• When using the SCP protocol, a SYSLOG message is generated
acknowledging that the Auto Update process is completed.
• When using the TFTP protocol, SYSLOG messages are generated by the
copy process.
Auto Configuration Starts:
• The device uses the TFTP/SCP server name/address and configuration file
name/path (DHCPv4 options: 66,150, and 67, DHCPv6 options: 59 and 60), if
any, from the DHCP message received.
• If the information is not sent by the DHCP server, the Backup Server IP
Address/Name and the Backup Configuration File Name (from the
Auto Configuration/Image
• The new configuration file is used if its name is different than the name of
the configuration file previously used on the device or if the device has
never been configured.
• The device is rebooted with the new configuration file, at the end of the
Auto Configuration/Image Update Process.
• SYSLOG messages are generated by the copy process.
Missing Options
• If the DHCP server did not send the TFTP/SCP server address in a DHCP
option and the backup TFTP/SCP server address parameter has not been
configured, then:
- SCP—The Auto Configuration process is halted.
- TFTP—The device sends TFTP Request messages to a limited
Broadcast address (for IPv4) or ALL NODES address (for IPv6) on its IP
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:
Update) is used.
SCP).
6
DHCP
Download
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