Netgear M7300-24XF (XSM7224S) - ProSAFE 24-port, 10 Gigabit Stackable L2+ Managed Switch ソフトウェアガイド

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Auto Install Configuration
21
 7000 Series Managed Switch
TFTP IP Address and the Configuration File Name
The following information is also processed, any of which can be returned by a BOOTP or 
DHCP server:
•     
The name of the configuration file (bootfile or option 67) to be downloaded from the TFTP 
server.
•     
The identification of the TFTP server from which to obtain the bootfile. This is given by 
any of the following fields:
-
The host name of the TFTP server (option 66 or sname). Either the TFTP address or 
name is specified, not both, in most network configurations. If a TFTP host name 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 (siaddr) to be used for Auto Install requests.
No configuration assigned by BOOTP or DHCP is saved in startup-config.
Handling Conflicting TFTP Server Configurations
The TFTP server IP address can be deduced from the multiple sources. It is selected from 
one of the following fields, listed from the highest priority to the lowest:
•     
The sname field of a DHCP or BOOTP reply.
•     
The TFTP server name (option 66) of a DHCP reply.
•     
The TFTP server address (option 150) field of a DHCP reply.
•     
The siaddr field of a DHCP or BOOTP reply.
DNS Server Requirements
A DNS server is needed to resolve the IP address of the TFTP server only if the sname or 
option 66 values are used.
Obtaining a Config File
After obtaining IP addresses for both the switch and the TFTP server, the Auto Install process 
attempts to download a configuration file. A host-specific configuration file is downloaded, if 
possible. Otherwise, a network configuration file is used as a bridge to get the final 
configuration. The methods are described in the following sections.
Host-Specific Configuration File
The switch attempts to download a host-specific configuration file if a bootfile name was 
specified by the DHCP or BOOTP server. The switch makes three unicast TFTP requests for