All MIBs › TIMETRA-PORT-MIB › tmnxPortEtherDownWhenLoopedEnabled
tmnxPortEtherDownWhenLoopedEnabled
Module: TIMETRA-PORT-MIB
OID (symbolic): TIMETRA-PORT-MIB::tmnxPortEtherDownWhenLoopedEnabled
OID (numeric): 1.3.6.1.4.1.6527.3.1.2.2.4.4.1.21
Node type: OBJECT-TYPE
Type: TruthValue
Access: read-write
Description:
The value of tmnxPortEtherDownWhenLoopedEnabled specifies whether physical loop detection for the Ethernet port is enabled or disabled. When enabled, the port will periodically send out keep-alive PDUs with an EtherType of 0x9000. If the port receives a keep-alive that it transmitted, tmnxPortState will be set to 'linkUp' if it was previously 'up'. The port will not move back to tmnxPortState 'up' for a period of time defined by tmnxPortEtherDownWhenLoopedRetry, but will continue to periodically send out keep-alive PDUs. Every time the port receives a keep alive it sent while a loop has been detected, it will reset the time period that it will remain down as defined by tmnxPortEtherDownWhenLoopedRetry.
What is tmnxPortEtherDownWhenLoopedEnabled?
This boolean object enables or disables physical loop detection on an Ethernet port by controlling the transmission of keep-alive PDUs with EtherType 0x9000. When enabled, the port monitors whether it receives its own keep-alive packets (indicating a loopback cable or switch), and if detected, marks the port as administratively down. Operators enable this feature to prevent bridging loops caused by misconfigured or troubleshooting loopback connections.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.6527.3.1.2.2.4.4.1.21 snmpwalk -v2c -c public <target> TIMETRA-PORT-MIB::tmnxPortEtherDownWhenLoopedEnabled
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.6527.3.1.2.2.4.4.1.21.1 snmpget -v2c -c public <target> TIMETRA-PORT-MIB::tmnxPortEtherDownWhenLoopedEnabled.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.6527.3.1.2.2.4.4.1.21.1 s <value>
OID Breakdown
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | BIANCA-BRICK-PPP-MIB |
| 1.3.6 | dod | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1 | internet | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4 | private | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4.1 | enterprises | ANIROOT-MIB |
| 1.3.6.1.4.1.6527 | timetra | ALCATEL-IND1-TIMETRA-GLOBAL-MIB |
| 1.3.6.1.4.1.6527.3 | timetraProducts | ALCATEL-IND1-TIMETRA-GLOBAL-MIB |
| 1.3.6.1.4.1.6527.3.1 | tmnxSRMIB | ALCATEL-IND1-TIMETRA-GLOBAL-MIB |
| 1.3.6.1.4.1.6527.3.1.2 | tmnxSRObjs | ALCATEL-IND1-TIMETRA-GLOBAL-MIB |
| 1.3.6.1.4.1.6527.3.1.2.2 | tmnxHwObjs | ALCATEL-IND1-TIMETRA-CHASSIS-MIB |
| 1.3.6.1.4.1.6527.3.1.2.2.4 | tmnxPortObjs | ALCATEL-IND1-TIMETRA-PORT-MIB |
| 1.3.6.1.4.1.6527.3.1.2.2.4.4 | tmnxPortEtherTable | ALCATEL-IND1-TIMETRA-PORT-MIB |
| 1.3.6.1.4.1.6527.3.1.2.2.4.4.1 | tmnxPortEtherEntry | ALCATEL-IND1-TIMETRA-PORT-MIB |
| 1.3.6.1.4.1.6527.3.1.2.2.4.4.1.21 | tmnxPortEtherDownWhenLoopedEnabled | TIMETRA-PORT-MIB |