All MIBs › Q-BRIDGE-MIB › dot1qPortIngressFiltering
dot1qPortIngressFiltering
Module: Q-BRIDGE-MIB
OID (symbolic): Q-BRIDGE-MIB::dot1qPortIngressFiltering
OID (numeric): 1.3.6.1.2.1.17.7.1.4.5.1.3
Node type: OBJECT-TYPE
Type: TruthValue
Access: read-write
Description: When this is true(1), the device will discard incoming frames for VLANs that do not include this Port in its
Member set. When false(2), the port will accept all incoming frames.
This control does not affect VLAN-independent BPDU frames, such as GVRP and STP. It does affect VLAN- dependent BPDU frames, such as GMRP.
The value of this object MUST be retained across reinitializations of the management system.
What is dot1qPortIngressFiltering?
This is a true/false flag that enables filtering: when true, the switch drops incoming frames for VLANs that don't include this port as a member. Operators enable this to prevent unauthorized VLAN traffic from entering ports and improve security. When disabled, the port accepts all VLAN traffic regardless of membership configuration.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.17.7.1.4.5.1.3 snmpwalk -v2c -c public <target> Q-BRIDGE-MIB::dot1qPortIngressFiltering
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.17.7.1.4.5.1.3.1 snmpget -v2c -c public <target> Q-BRIDGE-MIB::dot1qPortIngressFiltering.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.2.1.17.7.1.4.5.1.3.1 s <value>
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OID Breakdown
Upper-level ancestors (7 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | APERTUS-NPG-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.17 | dot1dBridge | BRIDGE-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.17.7 | qBridgeMIB | Q-BRIDGE-MIB |
| 1.3.6.1.2.1.17.7.1 | qBridgeMIBObjects | Q-BRIDGE-MIB |
| 1.3.6.1.2.1.17.7.1.4 | dot1qVlan | Q-BRIDGE-MIB |
| 1.3.6.1.2.1.17.7.1.4.5 | dot1qPortVlanTable | Q-BRIDGE-MIB |
| 1.3.6.1.2.1.17.7.1.4.5.1 | dot1qPortVlanEntry | Q-BRIDGE-MIB |
| 1.3.6.1.2.1.17.7.1.4.5.1.3 | dot1qPortIngressFiltering | Q-BRIDGE-MIB |