With respect to Juniper MX , can someone please explain what services does mib2d provide? There are many processes running on the Juniper MX depending on the services configured. These processes can be observed by running the command
'show system services extensive'. The well known services are rpd , l2ald , snmpd and mib2d.
What we observe that some monitoring system was sending too many SNMP queries to the MX resulting in increasing CPU Utilization. The top process that was contributing to high CPU Utilization was observed to be mib2d. Of course snmpd was also high but not like mib2d.
In the second scenario , we observed that there was excessive interface flapping. As a result MX KPI's were high. Again when we ran the command 'show system process extensive' , the top process was mib2d.
Hence the question becomes what services does mib2d provide? Is it related to snmp or physical interfaces?
This is required to know from the troubleshooting perspective because in case box CPU Utilization goes high and top process is mib2d , how can we know what is causing mib2d to go high? Is it only snmp & interfaces ? Or there are other services also?
Many Thanks !!!