Value ranges and limits for DPI SNMP value types

The following rules apply to object IDs in ASN.1 notation:

The object ID consists of 1 to 128 subIDs, which are separated by periods.
Each subID is a positive number. No negative numbers are allowed.
The value of each number cannot exceed 4294967295. This value is 2 to the power of 32 minus 1.
The valid values of the first subID are 0, 1, or 2.
If the first subID has a value of 0 or 1, the second subID can have a value only of 0 through 39.

The following rules apply to DisplayString:

A DisplayString (Textual Convention) is basically an OCTET STRING in SNMP terms.
The maximum size of a DisplayString is 255 octets or bytes.

More information on the DPI SNMP value types can be found in the SNMP Structure of Management Information (SMI) and SNMP Textual Conventions (TC) RFCs. These two RFCs are RFC 1902 and RFC 1903. See Related protocol specifications for information about accessing RFCs.