Dell PowerConnect M6220 User's Guide - Page 238
Defining Advanced Settings, Auto Configuration
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- Startup Config - The startup configuration file. - Backup Config - The backup configuration file. • Restore Configuration Factory Default - Select the radio button and click Apply Changes to restore all configuration structures to the defaults. Defining Advanced Settings Use Advanced Settings to set miscellaneous global attributes of the device. The changes to these attributes are applied only after the device is reset. Click System > Advanced Settings in the tree view to display the Advanced Settings page. The Advanced Settings page contains a link for configuring Auto Configuration. Auto Configuration The Auto Configuration feature enables the configuration of a switch automatically when the device is turned on and, during the boot process, no configuration file is found in device storage. By communicating with a DHCP server, obtains an IP address for the switch and an IP address for a TFTP server. Auto Configuration attempts to download a configuration file from the TFTP server and install it on the switch. The DHCP server that the switch communicates with must provide the following information: • The IP address and subnet mask (option 1) to be assigned to the switch. • The IP address of a default gateway (option 3), if needed for IP communication. • The identification of the TFTP server from which to obtain the boot file. This is given by any of the following fields, in the priority shown (highest to lowest): - The sname field of the DHCP reply. - The hostname of the TFTP server (option 66). Either the TFTP address or name is specified-not both-in most network configurations. If a TFTP hostname is given, a DNS server is required to translate the name to an IP address. - The IP address of the TFTP server (option 150). - The address of the TFTP server supplied in the siaddr field. - The name of the configuration file (boot file or option 67) to be downloaded from the TFTP server. The boot file name must have a file type of *.cfg. • The IP addresses of DNS name servers (option 6). The IP addresses of DNS name servers should be returned from the DHCP server only if the DNS server is in the same LAN as the switch performing Auto Configuration. A DNS server is needed to resolve the IP address of the TFTP server if only the "sname" or option 66 values are returned to the switch. After obtaining IP addresses for both the switch and the TFTP server, the Auto Configuration feature attempts to download a host-specific configuration file using the boot file name specified by the DHCP server. If the switch fails to obtain the file, it will retry indefinitely. 236 Configuring System Information