All MIBs › TN-MGMT-MIB › tnIfFwdPortList
tnIfFwdPortList
Module: TN-MGMT-MIB
OID (symbolic): TN-MGMT-MIB::tnIfFwdPortList
OID (numeric): 1.3.6.1.4.1.868.2.5.3.1.2.5.1.2
Node type: OBJECT-TYPE
Type: PortList
Access: read-write
Description: The complete set of ports, that frames ingressing this interface can be forwarded to. Each bit represents if it is in the forwarding list of this port or not according to it is set or cleared. Port 1 is represented by BIT0, Port 2.
What is tnIfFwdPortList?
This object is a bitmap that specifies which ports on a device each ingressing interface is allowed to forward traffic to, with each bit representing a port (bit 0 = port 1, bit 1 = port 2, etc.). Network administrators configure this to implement port-level forwarding policies without using VLAN restrictions, controlling the reachability matrix at the interface level. This is useful for microsegmentation or restricting traffic flow between specific ports on a switch or bridge.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.868.2.5.3.1.2.5.1.2 snmpwalk -v2c -c public <target> TN-MGMT-MIB::tnIfFwdPortList
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.868.2.5.3.1.2.5.1.2.1 snmpget -v2c -c public <target> TN-MGMT-MIB::tnIfFwdPortList.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.868.2.5.3.1.2.5.1.2.1 s <value>
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.868 | transition | TRANSITION-SMI |
| 1.3.6.1.4.1.868.2 | products | TRANSITION-SMI |
| 1.3.6.1.4.1.868.2.5 | tnProducts | TRANSITION-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.868.2.5.3 | tnMgmtMIB | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1 | tnMgmtObjects | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.2 | tnInterfaceMgmt | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.2.5 | tnIfFwdPortListTable | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.2.5.1 | tnIfFwdPortListEntry | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.2.5.1.2 | tnIfFwdPortList | TN-MGMT-MIB |