All MIBs › TN-MGMT-MIB › tnIfLimitDynMACAction
tnIfLimitDynMACAction
Module: TN-MGMT-MIB
OID (symbolic): TN-MGMT-MIB::tnIfLimitDynMACAction
OID (numeric): 1.3.6.1.4.1.868.2.5.3.1.4.4.1.3
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: If Limit is reached, the switch can take one of the following actions: none(0) : Do not allow more than Limit MAC addresses on the port, but take no further action.
trap(1) : If tnIfLimitDynMACMaxCount + 1 MAC addresses is seen on the port, send an SNMP trap. If Aging is disabled, only one SNMP trap will be sent, but with Aging enabled, new SNMP traps will be sent everytime the limit gets exceeded.
shutdown(2) : If tnIfLimitDynMACMaxCount + 1 MAC addresses is seen on the port, shut down the port. This implies that all secured MAC addresses will be removed from the port, and no new address will be learned. Even if the link is physically disconnected and reconnected on the port (by disconnecting the cable), the port will remain shut down. There are three ways to re-open the port: 1) Boot the switch, 2) Disable and re-enable Limit Control on the port or the switch, 3) enable using tnIfLimitDynMACReopen.
trapShutdown(3) : If tnIfLimitDynMACMaxCount + 1 MAC addresses is seen on the port, both the Trap and the Shutdown actions described above will be taken
What is tnIfLimitDynMACAction?
This read-write setting picks what happens when the MAC limit on this port is exceeded: none (silently refuse new MACs), trap (send an SNMP alert), shutdown (disable the port entirely, requiring manual or scripted reopening), or trapShutdown (do both). An admin monitoring for rogue-device intrusion on access ports would typically choose trap or trapShutdown rather than silent 'none'.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.868.2.5.3.1.4.4.1.3 snmpwalk -v2c -c public <target> TN-MGMT-MIB::tnIfLimitDynMACAction
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.868.2.5.3.1.4.4.1.3.1 snmpget -v2c -c public <target> TN-MGMT-MIB::tnIfLimitDynMACAction.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.868.2.5.3.1.4.4.1.3.1 i <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> tnIfLimitDynMACAction.1
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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 |
| 1.3.6.1.4.1.868.2.5.3.1.4 | tnIfMACSecurityMgmt | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.4.4 | tnIfLimitDynMACLearningTable | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.4.4.1 | tnIfLimitDynMACLearningEntry | TN-MGMT-MIB |
| 1.3.6.1.4.1.868.2.5.3.1.4.4.1.3 | tnIfLimitDynMACAction | TN-MGMT-MIB |