CISCOSB-vlanVoice-MIB :: vlanVoiceOUIBasedPortSecure

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCOSB-vlanVoice-MIB › vlanVoiceOUIBasedPortSecure

vlanVoiceOUIBasedPortSecure

Module: CISCOSB-vlanVoice-MIB

OID (symbolic): CISCOSB-vlanVoice-MIB::vlanVoiceOUIBasedPortSecure

OID (numeric): 1.3.6.1.4.1.9.6.1.101.48.54.12.5.1.3

Node type: OBJECT-TYPE

Type: TruthValue

Access: read-write

Description: Specify this port to be in Secure Mode when entering the Voice VLAN. In Secure mode only frames with MAC prefix matched to one of the OUI table prefixes are accepted, otherwise dropped.

What is vlanVoiceOUIBasedPortSecure?

This read-write TruthValue puts a port into Secure Mode for OUI-based voice VLAN membership, meaning only frames whose source MAC matches a known OUI prefix are accepted into the voice VLAN and all others are dropped. An admin enables this to prevent a device from spoofing a VoIP vendor's MAC prefix to gain voice VLAN access. For example, enabling secure mode on a lobby port stops an attacker from plugging in a laptop with a spoofed Cisco phone MAC and gaining entry to the voice VLAN's prioritized path.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.48.54.12.5.1.3
snmpwalk -v2c -c public <target> CISCOSB-vlanVoice-MIB::vlanVoiceOUIBasedPortSecure

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.48.54.12.5.1.3.1
snmpget -v2c -c public <target> CISCOSB-vlanVoice-MIB::vlanVoiceOUIBasedPortSecure.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.6.1.101.48.54.12.5.1.3.1 s <value>

Start monitoring Cisco Small Business managed switches with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCOSB-vlanVoice-MIB::vlanVoiceOUIBasedPortSecure OID value, configure state conditions and alerts, and monitor any Cisco Small Business managed switches from a single console.

OID Breakdown

Upper-level ancestors (12 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
1.3.6.1.4.1.9.6otherEnterprisesCISCO-SMI
1.3.6.1.4.1.9.6.1ciscoSBCISCO-SMI
1.3.6.1.4.1.9.6.1.101switch001CISCOSB-MIB
1.3.6.1.4.1.9.6.1.101.48vlanCISCOSB-MIB
1.3.6.1.4.1.9.6.1.101.48.54vlanVoiceCISCOSB-vlan-MIB
Numeric OIDNameModule
1.3.6.1.4.1.9.6.1.101.48.54.12vlanVoiceOUIBasedCISCOSB-vlanVoice-MIB
1.3.6.1.4.1.9.6.1.101.48.54.12.5vlanVoiceOUIBasedPortTableCISCOSB-vlanVoice-MIB
1.3.6.1.4.1.9.6.1.101.48.54.12.5.1vlanVoiceOUIBasedPortEntryCISCOSB-vlanVoice-MIB
1.3.6.1.4.1.9.6.1.101.48.54.12.5.1.3vlanVoiceOUIBasedPortSecureCISCOSB-vlanVoice-MIB