User's Manual

SNMP 5

Simple Network Management Protocol is a member of the Internet Protocol standard

communications suite. The STXe comes with a built-in SNMP agent (SNMP version 2c) for handling

all request types included in the protocol – GET, SET, GETNEXT, and GETBULK. The appropriate MIB

for the version of SNMP agent installed on the exciter must be downloaded from the exciter itself. As

with any MIB, this ASCII text file completely defines the data structure within the agent. The MIB also

provides textual descriptions for every accessible object. To download the file access the web

interface using a standard web browser. Right click on the “SNMP MIB File” link and click “Save link

as…”, refer to Figure 9. Save a local copy of the MIB file wherever desired for use in an SNMP

manager application. Alternatively, click the link and navigate to the file in the browser. Right click

anywhere in the viewing space and click “Save as…” Simply remove the .txt extension (leaving only

the .mib extension) and save at the desired location.

Figure 9 – MIB Download

An SNMP manager application must be utilized in order to access the interface. Integrating a

manager into custom station automation programs provides countless possibilities. Alternatively,

various third party MIB browser GUI applications are available for free download; however Broadcast

Electronics does not endorse any specific application. Simply direct the manager to the Ethernet port

for communication across a network.

5.1 Authentication

Data is accessible by using the correct community strings for the desired login level. The

formula for these strings is a combination of the login type – chief, user, or operator –, a

delimitating ‘+’ character, and the 8 digit numerical password associated with that login

type. For example, “chief+12345678” in both the read community and write community

passes authentication and allows read and write to essentially every object in the MIB with

the appropriate max-access type. User and Operator login types provide more strict control

over what settings can be modified and commands issued in the system.