Getting Counters - PDU Size
Understand how large your PDU’s are.
- Standard specifies agent must support 484
- MTU of most networks is 1500 bytes
- The max SNMP/UDP/IP PDU can be 65518 with ip fragmentation, but is very, very costly and may not be supported by many agents and managers.
- Agents have a max PDU size they accept and create
- else snmpInTooBig, snmpOutTooBig will increment