Dell PowerConnect J-EX8208, Руководство пользователя программного обеспечения

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To update a device—Autoinstallation takes place when a device that has been manually
configured for autoinstallation is powered on.
Autoinstallation Configuration Files and IP Addresses
For the autoinstallation process to work, you must store one or more host-specific or
default configuration files on a configuration server in the network and have a service
available—typically Dynamic Host Configuration Protocol (DHCP)—to assign an IP address
to the switch.
You can set up the following configuration files for autoinstallation on the switch:
• network.conf
—Default configuration file for autoinstallation, in which you specify IP
addresses and associated hostnames for devices on the network.
• switch.conf
—Default configuration file for autoinstallation with a minimum configuration
sufficient for you to telnet to the device and configure it manually.
• hostname .conf —Host-specific configuration file for autoinstallation on a device that
contains all the configuration information necessary for the switch. In the filename,
hostname is replaced with the hostname assigned to the switch.
If the server with the autoinstallation configuration file is not on the same LAN segment
as the new device, or if a specific device is required by the network, you must configure
an intermediate device directly attached to the new switch, through which the new switch
can send TFTP, boot protocol (BOOTP), and Domain Name System (DNS) requests. In
this case, you specify the IP address of the intermediate device as the location to receive
TFTP requests for autoinstallation.
Typical Autoinstallation Process on a New Switch
When a J-EX Series switch is powered on for the first time, it performs the following
autoinstallation tasks:
1.
The new switch sends out DHCP or BOOTP requests on each connected interface
simultaneously to obtain an IP address.
If a DHCP server responds to these requests, it provides the switch with some or all
of the following information:
• An IP address and subnet mask for the autoinstallation interface.
• The location of the (typically) TFTP server, Hypertext Transfer Protocol (HTTP)
server, or FTP server on which the configuration file is stored.
• The name of the configuration file to be requested from the TFTP server.
• The IP address or hostname of the TFTP server.
If the DHCP server provides the server’s hostname, a DNS server must be available
on the network to resolve the name to an IP address.
• The IP address of an intermediate device if the configuration server is on a different
LAN segment from the new switch.
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Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS