METRODATA NetTESTER FAMILY USER MANUAL
76-02-107 Rev.A
Page 37 of 133
SNMP runs over UDP/IP. The messages support a small number of primitive
operations (read, write, etc.) Unsolicited messages from the agent, known as
notifications or traps, are also supported.
Various versions of the protocol exist. The unit support versions 1 and 2c.
The unit allows details of a number of manager devices to be configured. Only these
devices will be permitted to interact with the unit via SNMP. Each can be further
restricted by controlling whether it is allowed to perform read or write operations
and/or receive traps.
A list of supported MIBs is given in APPENDIX B. These are a mixture of standard
and Metrodata proprietary documents.
Despite the extensive MIB support, SNMP is still an incomplete method of managing
the unit. For this and other reasons, it is seldom used as the primary method of
controlling and configuring the unit. It is, however, used widely for the collection of
performance statistics.
7.8 TFTP and SFTP
Trivial File Transfer Protocol (TFTP) and Secure File Transfer Protocol (SFTP) are
supported in order to allow the transfer of information, in the form of files, between
the unit and an external management entity.
7.8.1 TFTP Client Mode
TFTP client mode (where the unit acts as the client) requires access to an external
device acting as server.
7.8.2 TFTP Server Mode
Up to two IP addresses may be specified which will be accepted as clients by the
unit when in TFTP server mode. An attempt to instigate a transfer from any other
client address will be refused.
Note
: If the client is located behind a NAT enabled firewall, the external IP address is
the one that must be specified.
7.8.2.1 Command Line Examples
From a Windows PC, the TFTP command line to send a file to the unit would be as
below:
tftp
–
i
<unit ip address>
put
<pc filename> <unit filename>
As an example, the following command would send the file nt1005.940 from the PC
to the unit (IP address 192.168.0.11), where it would then be available to perform a
software update.
tftp -i 192.168.0.11 put nt1005.943 software/nt1005.943
The following command would send the file demo.cfg from the PC to the unit, where
it would then be available to set the unit configuration.
