Chapter 1:
Introduction
1-10
ATX MIB Reference Guide
The get command would look like:
get 1.3.6.1.4.1.97.2.9.2.0
At the beginning of each chapter in this Reference Guide, the prefix for each MIB
group is provided. To calculate the specific MIB variable, you add the specific
object ID to the prefix for that MIB group.
1.8 TFTP
TFTP (Trivial File Transfer Protocol, RFC 1350) is used for:
•
Distribution of new software.
TFTP has no inherent security provision; however, all files have special data
encryption, and the ATX will reject files that have not been encrypted. In
addition, SNMP primitives may be used to prevent the ATX from accepting
unauthorized TFTP requests, even if the files have the special data encryption.
Refer to the description of the swdis branch of Cabletron’s private MIB for TFTP
security details.
1.8.1 Software Distribution
TFTP is used for the distribution of new software. The new software will be
automatically invoked when a ATX reboots.
New software is released in two files:
•
dnld_hdr
•
dnld_software
To distribute the new software to a ATX, the TFTP procedure is as follows:
1.
Start TFTP on the NMS, or on any other device which can provide TFTP
services. (Typically, TFTP must be started from the same directory that
contains the files to be transferred.) TFTP must be told the IP address of the
remote host (the IP address of the ATX), and the file transfer mode (which
must be “binary”).
2.
Use TFTP to retrieve all of the unit’s parameters, as descibed in a subsection
below. This step is not required, but it is recommended if you need to
back-pedal to the software that is currently being executed by the unit.
3.
Tell TFTP to transfer (“put”) the first file, (dnld_hdr).
4.
Wait at least three minutes, or until the unit sends the SNMP Trap described
in the swdis branch of Cabletron’s private MIB.
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