BASIS-SERIAL-MIB :: serialPortNum

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsBASIS-SERIAL-MIBserialPortNum

serialPortNum

Module: BASIS-SERIAL-MIB

OID (symbolic): BASIS-SERIAL-MIB::serialPortNum

OID (numeric): 1.3.6.1.4.1.351.110.4.1.1.1.1

Node type: OBJECT-TYPE

Type: Integer32

Access: read-only

Description: This object identifies the serial port number.

The value 1 is used for Console Port. The Console Port is also known as control port(CP).

The value 2 is used for Maintenance Port and this can be used as SLIP (Serial Line Internet Protocol) interface. The Maintenance Port is also known as Modem Port(MP).

What is serialPortNum?

Identifies a serial port by its index number, where 1 designates the Console (Control) Port and 2 designates the Maintenance Port that can also operate as a SLIP interface. This index is used as a key when accessing per-port configuration or status data.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.351.110.4.1.1.1.1
snmpwalk -v2c -c public <target> BASIS-SERIAL-MIB::serialPortNum

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.351.110.4.1.1.1.1.1
snmpget -v2c -c public <target> BASIS-SERIAL-MIB::serialPortNum.1

Start monitoring Cisco MGX 8850/8250/8220 ATM edge switches (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the BASIS-SERIAL-MIB::serialPortNum OID value, configure state conditions and alerts, and monitor any Cisco MGX 8850/8250/8220 ATM edge switches (legacy) from a single console.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.351stratacomCISCOWAN-SMI
1.3.6.1.4.1.351.110basisBASIS-MIB
1.3.6.1.4.1.351.110.4basisLinesBASIS-MIB
Numeric OIDNameModule
1.3.6.1.4.1.351.110.4.1serialInterfaceBASIS-SERIAL-MIB
1.3.6.1.4.1.351.110.4.1.1serialInterfaceTableBASIS-SERIAL-MIB
1.3.6.1.4.1.351.110.4.1.1.1serialInterfaceEntryBASIS-SERIAL-MIB
1.3.6.1.4.1.351.110.4.1.1.1.1serialPortNumBASIS-SERIAL-MIB