HP J3128A AdvanceStack 10Base-T Hub-8E, Manual

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3-6
Setting an IP Address for the Hub
Setting
a
n
IP Address for the
Hub
Automatically Acquiring an IP Address Using Bootp/DHCP
BOOTP (Bootstrap Protocol) is used to download network configuration data
from a server (the Bootp/DHCP server) to the hub. The configuration data the
hub retrieves from the Bootp/DHCP server is:
■
the IP address for the hub
■
the subnet mask for the subnet on which the hub is installed
■
the default router
If you have configured the hub’s IP parameters on a Bootp/DHCP server, you
do not need to use the IP Configuration screen in the hub console. As shipped
from the factory, the hub is configured to use Bootp/DHCP to retrieve the IP
configuration information.
The Bootp/DHCP Process. When the hub is powered on, it broadcasts
Bootp/DHCP requests that contain the hub’s MAC address. The Bootp/DHCP
server receives the request and searches its Bootp/DHCP table file for an entry
that matches the hub’s MAC address. If a match is found, the configuration
data in the associated file entry is returned to the hub as a Bootp/DHCP reply.
For most UNIX systems, the Bootp table is contained in the
/etc/bootptab file.
BOOTP Table File Entries. An entry in the BOOTP table file
/etc/bootptab
for an HP 10Base-T Hub-24M would be similar to the
following:
hphub24M:\
ht=ether:\
ha=080009123456:\
ip=190.40.101.22:\
sm=255.255.255.0:\
gw=190.40.101.1:\
vm=rfc1048
Agent.bk : AGTCH3.FM5 Page 6 Thursday, February 19, 1998 2:13 PM