Runtime IP Address Discovery
1-4
Introduction
1.1.1
Options
The GPIM options for the module are listed in
Table 1-1
. See the firmware Release Notes for any
changes or additions to this information.
1.2
RUNTIME IP ADDRESS DISCOVERY
This feature enables the module to automatically accept an IP address from a Boot Strap Protocol
(BootP) server on the network without requiring a user to enter an IP address through Local
Management.
When the module is connected to the network and powered up, Runtime IP Address Discovery
(RAD) checks the module for an IP address. If one has not yet been assigned (module IP address
set to 0.0.0.0), RAD checks to see if any of the module interfaces have a link. If a link is
discovered, RAD sends out Reverse Address Resolution Protocol (RARP) and BootP requests to
obtain an IP address from a BootP server on the network.
The RAD requests start at an interval of one per second. The interval then doubles after every
transmission until an interval of 300 seconds is reached. At this point, the interval remains at 300
seconds. The RAD requests continue until an IP address is received from a RARP or BootP server,
or an IP address is entered using Local Management.
Table 1-1
GPIM Options
Part Number
Description
Application
GPIM-01
SC fiber connector
Supports 50 or 62.5 micron
multimode fiber.
GPIM-08
SC fiber connector
Supports 10 micron single mode
fiber.
GPIM-09
SC fiber connector
Supports single mode (10 micron)
or multimode (50 or 62.5 micron)
fiber.
NOTE:
The module will reboot after RAD is successful.
