All MIBs › VERTICAL-SNMP-REPEATER-MIB › vrptrMonitorPortLateEvents
vrptrMonitorPortLateEvents
Module: VERTICAL-SNMP-REPEATER-MIB
OID (symbolic): VERTICAL-SNMP-REPEATER-MIB::vrptrMonitorPortLateEvents
OID (numeric): 1.3.6.1.4.1.2338.4.2.3.1.1.11
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: For a clause 9 repeater port, this counter is incremented by one for each CarrierEvent on this port in which the CollIn(X) variable transitions to the value SQE (Ref: 9.6.6.2, IEEE 802.3 Std) while the ActivityDuration is greater than the LateEventThreshold. For a clause 27 repeater port, this counter is incremented by one on entering the Collision Count Increment state of the partition state diagram (fig 27-8) while the ActivityDuration is greater than the LateEvent- Threshold. Such a CarrierEvent is counted twice, as both a collision and as a lateEvent.
The LateEventThreshold is greater than 480 bit times and less than 565 bit times. LateEventThreshold has tolerances included to permit an implementation to build a single threshold to serve as both the LateEventThreshold and ValidPacketMinTime threshold.
A discontinuity may occur in the value when the value of object rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this counter is 81 hours in a 10Mb/s repeater.
What is vrptrMonitorPortLateEvents?
A count of 'late collisions' on this port — a collision detected well after the frame transmission window should have cleared any contention (past the LateEventThreshold, roughly 480-565 bit times). Each such event is double-counted, incrementing both this counter and vrptrMonitorPortCollisions. Late collisions typically indicate an oversized network diameter or a duplex mismatch.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2338.4.2.3.1.1.11 snmpwalk -v2c -c public <target> VERTICAL-SNMP-REPEATER-MIB::vrptrMonitorPortLateEvents
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2338.4.2.3.1.1.11.1 snmpget -v2c -c public <target> VERTICAL-SNMP-REPEATER-MIB::vrptrMonitorPortLateEvents.1
Start monitoring Vertical Networks SNMP repeater/hub (per-port status/collision-count status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the VERTICAL-SNMP-REPEATER-MIB::vrptrMonitorPortLateEvents OID value, configure state conditions and alerts, and monitor any Vertical Networks SNMP repeater/hub (per-port status/collision-count status) from a single console.
OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.4.1.2338 | vertical | VERTICAL-EVENTLOG-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2338.4 | vsnmpDot3RptrMgt | VERTICAL-SNMP-REPEATER-MIB |
| 1.3.6.1.4.1.2338.4.2 | vrptrMonitorPackage | VERTICAL-SNMP-REPEATER-MIB |
| 1.3.6.1.4.1.2338.4.2.3 | vrptrMonitorPortInfo | VERTICAL-SNMP-REPEATER-MIB |
| 1.3.6.1.4.1.2338.4.2.3.1 | vrptrMonitorPortTable | VERTICAL-SNMP-REPEATER-MIB |
| 1.3.6.1.4.1.2338.4.2.3.1.1 | vrptrMonitorPortEntry | VERTICAL-SNMP-REPEATER-MIB |
| 1.3.6.1.4.1.2338.4.2.3.1.1.11 | vrptrMonitorPortLateEvents | VERTICAL-SNMP-REPEATER-MIB |