NOTE: The MIB name uses ".my" as an extension. If the Network Management System (NMS) software that you are using does not accept ".my" extensions then it may be necessary to rename the file with the  program's correct extension, for example ".mib".

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IRT-MIBs (31-01-2012).zip
All of IRT's current MIBs in zip format as of 09th February 2011