CISCO-STACK-MIB :: portSpantreeFastStart

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-STACK-MIBportSpantreeFastStart

portSpantreeFastStart

Module: CISCO-STACK-MIB

OID (symbolic): CISCO-STACK-MIB::portSpantreeFastStart

OID (numeric): 1.3.6.1.4.1.9.5.1.4.1.1.12

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Indicates whether the port is operating in spantree fast start mode. A port with fast start enabled is immediately put in spanning tree forwarding state on link up, rather than starting in blocking state which is the normal operation. This is useful when the port is known to be connected to a single station which has problems waiting for the normal spanning tree operation to put the port in forwarding state.

This object is deprecated and replaced by stpxFastStartPortTable in CISCO-STP-EXTENSIONS-MIB.

What is portSpantreeFastStart?

Indicates and controls whether Spanning Tree PortFast is enabled on a port, which immediately puts the port into forwarding state on link-up instead of going through the normal blocking-to-forwarding delay.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.5.1.4.1.1.12
snmpwalk -v2c -c public <target> CISCO-STACK-MIB::portSpantreeFastStart

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.5.1.4.1.1.12.1
snmpget -v2c -c public <target> CISCO-STACK-MIB::portSpantreeFastStart.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.5.1.4.1.1.12.1 i <value>

Start monitoring Cisco Catalyst switch (legacy/mid-generation) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-STACK-MIB::portSpantreeFastStart OID value, configure state conditions and alerts, and monitor any Cisco Catalyst switch (legacy/mid-generation) 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
1.3.6.1.4.1.9.5workgroupCISCO-ES-STACK-MIB
Numeric OIDNameModule
1.3.6.1.4.1.9.5.1ciscoStackMIBCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.4portGrpCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.4.1portTableCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.4.1.1portEntryCISCO-STACK-MIB
1.3.6.1.4.1.9.5.1.4.1.1.12portSpantreeFastStartCISCO-STACK-MIB