Given a scenario where a lab has two routers and $6$ switches, and it is monitored by SNMP software. Mention the data types used with the corresponding MIB tree.

I. How does the manager get the corresponding information of the number of packets forwarded at a particular router that uses UDP protocol? Give the appropriate message request, response stream with Object identifier hierarchy $($OID$).$

II$.$ The number of requests handled by a particular host is exceeding its capacity, it wants to inform the manager so that no more requests will be sent. Give the appropriate message request, response stream with OID.