All MIBs › NETGEAR-SWITCHING-MIB › agentStpCstPortTCNGuard
agentStpCstPortTCNGuard
Module: NETGEAR-SWITCHING-MIB
OID (symbolic): NETGEAR-SWITCHING-MIB::agentStpCstPortTCNGuard
OID (numeric): 1.3.6.1.4.1.4526.11.1.2.15.11.1.18
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This command restricts the port from propagating any topology change information received through that port.
enable(1) - enables the tcn-guard mode for the port. disable(2) - disables the tcn-guard mode for the port.
The default tcn-guard mode is disabled.
What is agentStpCstPortTCNGuard?
This enable(1)/disable(2) flag (default disabled) turns on TCN (topology change notification) guard for this port, stopping any topology-change information received on it from being propagated further into the network. An admin enables it on an edge or access port to prevent flapping end devices from triggering unnecessary MAC-table flushes across the network.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4526.11.1.2.15.11.1.18 snmpwalk -v2c -c public <target> NETGEAR-SWITCHING-MIB::agentStpCstPortTCNGuard
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4526.11.1.2.15.11.1.18.1 snmpget -v2c -c public <target> NETGEAR-SWITCHING-MIB::agentStpCstPortTCNGuard.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.4526.11.1.2.15.11.1.18.1 i <value>
Start monitoring Netgear ProSafe/NG700-series smart switch (Layer 2 switching/cable diagnostics) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NETGEAR-SWITCHING-MIB::agentStpCstPortTCNGuard OID value, configure state conditions and alerts, and monitor any Netgear ProSafe/NG700-series smart switch (Layer 2 switching/cable diagnostics) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.4526 | netgear | FSM726S-MIB |
| 1.3.6.1.4.1.4526.11 | ng700smartswitch | Netgear-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4526.11.1 | agentSwitching | NETGEAR-SWITCHING-MIB |
| 1.3.6.1.4.1.4526.11.1.2 | agentConfigGroup | NETGEAR-SWITCHING-MIB |
| 1.3.6.1.4.1.4526.11.1.2.15 | agentStpSwitchConfigGroup | NETGEAR-SWITCHING-MIB |
| 1.3.6.1.4.1.4526.11.1.2.15.11 | agentStpCstPortTable | NETGEAR-SWITCHING-MIB |
| 1.3.6.1.4.1.4526.11.1.2.15.11.1 | agentStpCstPortEntry | NETGEAR-SWITCHING-MIB |
| 1.3.6.1.4.1.4526.11.1.2.15.11.1.18 | agentStpCstPortTCNGuard | NETGEAR-SWITCHING-MIB |