Allied Telesis AT-S20 - Manual (Page 24)

Remote Management Requirements
2-4
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You can remotely manage your switch, but first you must have one of
the following:
❑ The switch’s pre-configured MAC address (located below the
RS232 Terminal Port label on the switch’s front panel
❑ A unique IP address if you use TCP/IP (by either assigning one
to the remote switch or by having your BootP/DHCP server
provide the needed parameters
❑ A unique name for the switch that you assign via Omega (see
Naming the Switch on page 4-8.
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To manage the switch in a TCP/IP based network, you must first:
❑ Configure the switch’s IP parameters, or
❑ Automatically get an IP address via BootP or DHCP
Note
You do have the option to manage the switch using either SNMP or
Omega Remote, via Telnet or web browser.
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The function of the BootP utility within an IP server is to enter an IP
address into the switch. Whenever you reset or power on/off the
switch, the switch transmits a request packet to the server every
three seconds to obtain the required IP parameters. (The BootP
utility and the DHCP both make three attempts each.)
If the requesting switch does not receive a BootP or DHCP response
after the third request, it will operate with a computed pseudo IP
address based on the switch’s MAC address for Allied Telesyn switch-
to-switch communication, i.e., downloads.
If the switch receives a BootP or DHCP response, it extracts the IP
address, Subnet Mask, and Gateway/Router address from the
response packet and uses these parameters to configure itself until
the next power-on or reset. Additionally, if the BootP response
packet specifies a filename and a TFTP host address, then the switch
sends a TFTP “get” request to the specified host using the specified
filename. This initiates a TFTP download of operating software and
allows you to maintain the downloaded server software.