All MIBs › TN-SAP-MIB › tnStpRootGuardViolation
tnStpRootGuardViolation
Module: TN-SAP-MIB
OID (symbolic): TN-SAP-MIB::tnStpRootGuardViolation
OID (numeric): 1.3.6.1.4.1.7483.6.1.3.4.5.0.35
Node type: NOTIFICATION-TYPE
Description:
The tnStpRootGuardViolation notification is generated when a SAP which has root-guard configured is trying to become root (has a better STP priority vector). The SAP will become alternate and traffic will be blocked.
What is tnStpRootGuardViolation?
This SNMP notification is sent when a Service Access Point (SAP) configured with root guard detects a better STP priority vector that would cause it to become the root bridge. The SAP is automatically placed in alternate state, blocking traffic, to prevent topology changes. Operators receive this trap to be alerted of potential topology issues or misconfiguration in the bridged network.
Examples
Send this trap to an SNMP manager — replace <manager> with the IP or hostname of your monitoring server (SNMPv2c):
snmptrap -v2c -c public <manager> '' TN-SAP-MIB::tnStpRootGuardViolation snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.7483.6.1.3.4.5.0.35
Listen for incoming traps on the manager host (-f keeps it in the foreground, -Lo prints to stdout — useful for testing):
snmptrapd -f -Lo -c /dev/null authCommunity log public
Example snmptrapd log entry:
zoo11-linux.zoo [UDP: [192.168.30.111]:65381->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (173338981) 20 days, 1:29:49.81 SNMPv2-MIB::snmpTrapOID.0 = OID: TN-SAP-MIB::tnStpRootGuardViolation
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 |
| 1.3.6.1.4.1.7483 | tropic | TROPIC-GLOBAL-REG |
| 1.3.6.1.4.1.7483.6 | tnProducts | TROPIC-GLOBAL-REG |
| 1.3.6.1.4.1.7483.6.1 | tnSRMIB | TROPIC-GLOBAL-REG |
| 1.3.6.1.4.1.7483.6.1.3 | tnSRNotifyPrefix | TROPIC-GLOBAL-REG |
| 1.3.6.1.4.1.7483.6.1.3.4 | tnServNotifications | TN-SERV-MIB |
| 1.3.6.1.4.1.7483.6.1.3.4.5 | tnTstpTrapsPrefix | TN-SERV-MIB |
| 1.3.6.1.4.1.7483.6.1.3.4.5.0 | tnTstpTraps | TN-SERV-MIB |
| 1.3.6.1.4.1.7483.6.1.3.4.5.0.35 | tnStpRootGuardViolation | TN-SAP-MIB |