RFC1317-MIB :: rs232InSigChanges

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsRFC1317-MIBrs232InSigChanges

rs232InSigChanges

Module: RFC1317-MIB

OID (symbolic): RFC1317-MIB::rs232InSigChanges

OID (numeric): 1.3.6.1.2.1.10.33.5.1.4

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

Description: The number of times the signal has changed from 'on' to 'off' or from 'off' to 'on'.

What is rs232InSigChanges?

Running count of how many times this input control signal has transitioned between on and off — a busy modem-control line (e.g. a flapping DCD) shows up as a rapidly climbing count here.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.10.33.5.1.4
snmpwalk -v2c -c public <target> RFC1317-MIB::rs232InSigChanges

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.10.33.5.1.4.1
snmpget -v2c -c public <target> RFC1317-MIB::rs232InSigChanges.1

Start monitoring vendor-neutral, standards-based MIB, terminal/console servers and routers with RS-232 serial ports with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the RFC1317-MIB::rs232InSigChanges OID value, configure state conditions and alerts, and monitor any vendor-neutral, standards-based MIB, terminal/console servers and routers with RS-232 serial ports from a single console.

OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.10transmissionCHECKPOINT-MIB-2
1.3.6.1.2.1.10.33rs232MRVINREACH
1.3.6.1.2.1.10.33.5rs232InSigTableMRVINREACH
1.3.6.1.2.1.10.33.5.1rs232InSigEntryMRVINREACH
Numeric OIDNameModule
1.3.6.1.2.1.10.33.5.1.4rs232InSigChangesRFC1317-MIB