[Note: this isn't really a question about prometheus] You can capture information using SNMP without MIB files, just by querying a particular numeric OID. But the data you get back may not make any sense to you. You will be able to see the *type* of each datum - integer, string, IP Address etc - but will have a hard time ascribing a meaning to each one.
Using netsnmp, try: snmpbulkwalk -On <device> 1.3.6.1.4.1 to walk the vendor-specific (enterprise) MIB for that device. You may need to add authentication flags, e.g. "-v2c public", unless you have authentication configured in /etc/snmp/snmp.conf -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/b9e1fd93-7b68-4940-9fff-942e97da98d0n%40googlegroups.com.

