IronPort Systems 4108GL - Manual (Page 129)

7-13
Configuring IP Addressing
IP Configuration
C
o
n
fig
u
rin
g
IP
Ad
d
re
ssin
g
N o t e The above Bootp table entry is a sample that will work for the Switch 4108GL
when the appropriate addresses and file names are used.
Network Preparations for Configuring DHCP/Bootp
In its default configuration, the switch is configured for DHCP/Bootp opera-
tion. However, the DHCP/Bootp feature will not acquire IP addressing for the
switch unless the following tasks have already been completed:
■ For Bootp operation:
• A Bootp database record has already been entered into an appropriate
Bootp server.
• The necessary network connections are in place
• The Bootp server is accessible from the switch
■ For DHCP operation:
• A DHCP scope has been configured on the appropriate DHCP server.
• The necessary network connections are in place
• A DHCP server is accessible from the switch
N o t e Designating a primary VLAN other than the default VLAN affects the switch’s
use of information received via DHCP/Bootp. For more on this topic, see
“Which VLAN Is Primary?” on page 14-7.
After you reconfigure or reboot the switch with DHCP/Bootp enabled in a
network providing DHCP/Bootp service, the switch does the following:
■ Receives an IP address and subnet mask and, if configured in the server,
a gateway IP address and the address of a Timep server.
■ If the DHCP/Bootp reply provides information for downloading a config-
uration file, the switch uses TFTP to download the file from the designated
source, then reboots itself. (This assumes that the switch or VLAN has
connectivity to the TFTP file server specified in the reply, that the config-
uration file is correctly named, and that the configuration file exists in the
TFTP directory.)
gw is the IP address of the default gateway.
lg TFTP server address (source of final configuration file)
T144 is the vendor-specific “tag” identifying the configuration file to download.
vm is a required entry that specifies the Bootp report format. For the Switches 2512
and 2524, set this parameter to rfc1048.