DSMON-MIB :: dsmonHostCtlIPv4PrefixLen

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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dsmonHostCtlIPv4PrefixLen

Module: DSMON-MIB

OID (symbolic): DSMON-MIB::dsmonHostCtlIPv4PrefixLen

OID (numeric): 1.3.6.1.2.1.16.26.1.4.1.1.5

Node type: OBJECT-TYPE

Type: Integer32

Access: read-create

Description: The number of 'leftmost' contiguous bits in the host address field for encapsulations of IPv4, that should be maintained in this collection. This object controls how the dsmonHostAddress object is derived for packets which contain an encapsulation of IPv4.

If this object has a value less than 32, then 'm' rightmost bits, where 'm' is equal to '32 - dsmonHostCtlIPv4PrefixLen', will be cleared to zero for counting purposes only. The 'leftmost' bit is the most significant bit of the first network-byte-order octet of the address.

If this object is equal to 32, then no bits are cleared in each dsmonHostAddress field.

This object MUST NOT be modified if the associated dsmonHostCtlStatus object is equal to active(1).

What is dsmonHostCtlIPv4PrefixLen?

Sets how many leading bits of an IPv4 host address are kept (the rest zeroed) when building dsmonHostAddress entries; an admin lowers this from the default /32 to group hosts by subnet instead of tracking every individual IP.

OID Breakdown

Upper-level ancestors (7 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAPERTUS-NPG-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.16rmonITOUCHHUB
Numeric OIDNameModule
1.3.6.1.2.1.16.26dsmonMIBDSMON-MIB
1.3.6.1.2.1.16.26.1dsmonObjectsDSMON-MIB
1.3.6.1.2.1.16.26.1.4dsmonHostObjectsDSMON-MIB
1.3.6.1.2.1.16.26.1.4.1dsmonHostCtlTableDSMON-MIB
1.3.6.1.2.1.16.26.1.4.1.1dsmonHostCtlEntryDSMON-MIB
1.3.6.1.2.1.16.26.1.4.1.1.5dsmonHostCtlIPv4PrefixLenDSMON-MIB