CISCO-C2900-MIB :: c2900PortDuplexState

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-C2900-MIBc2900PortDuplexState

c2900PortDuplexState

Module: CISCO-C2900-MIB

OID (symbolic): CISCO-C2900-MIB::c2900PortDuplexState

OID (numeric): 1.3.6.1.4.1.9.9.87.1.4.1.1.31

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Set to fullduplex(1) to operate in full duplex mode, port will allow simultaneous transmit and receive which can double its bandwidth.

Set to halfduplex(2) to operate in half duplex mode.

Set to autoNegotiate(3) to allow the switch to negoti- ate with the other end of the connection.

The status of duplex mode on a port is available with c2900PortDuplexStatus object.

What is c2900PortDuplexState?

A read-write setting to configure a port's duplex mode as full duplex, half duplex, or auto-negotiate.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.87.1.4.1.1.31
snmpwalk -v2c -c public <target> CISCO-C2900-MIB::c2900PortDuplexState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.87.1.4.1.1.31.1
snmpget -v2c -c public <target> CISCO-C2900-MIB::c2900PortDuplexState.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.9.87.1.4.1.1.31.1 i <value>

Start monitoring Cisco Catalyst 2900 series switch (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-C2900-MIB::c2900PortDuplexState OID value, configure state conditions and alerts, and monitor any Cisco Catalyst 2900 series switch (legacy) from a single console.

OID Breakdown

Upper-level ancestors (8 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
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.9ciscoMgmtCISCO-SMI
Numeric OIDNameModule
1.3.6.1.4.1.9.9.87ciscoC2900MIBCISCO-C2900-MIB
1.3.6.1.4.1.9.9.87.1c2900MIBObjectsCISCO-C2900-MIB
1.3.6.1.4.1.9.9.87.1.4c2900PortCISCO-C2900-MIB
1.3.6.1.4.1.9.9.87.1.4.1c2900PortTableCISCO-C2900-MIB
1.3.6.1.4.1.9.9.87.1.4.1.1c2900PortEntryCISCO-C2900-MIB
1.3.6.1.4.1.9.9.87.1.4.1.1.31c2900PortDuplexStateCISCO-C2900-MIB