I found some advice in a KBA-3141: MIB files for Zabbix tool
--Since Zabbix files do not support MIB files, we need to convert the MIB files into XML format .
--We can convert MIB files into XML format by using the link:
http://www.snmpsource.com/snmp_mib_viewer.asp--Once after converting we can upload the file into zabbix tool,which helps to monitor the network.