All MIBs › ACMIB › ethernetPortStatsLateCollisions
ethernetPortStatsLateCollisions
Module: ACMIB
OID (symbolic): ACMIB::ethernetPortStatsLateCollisions
OID (numeric): 1.3.6.1.4.1.1751.2.18.10.7.1.9
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: The number of times that a collision is detected on a particular interface later than 512 bit-times into the transmission of a packet.
Five hundred and twelve bit-times corresponds to 51.2 microseconds on a 10 Mbit/s system. A (late) collision included in a count represented by an instance of this object is also considered as a (generic) collision for purposes of other collision-related statistics.
What is ethernetPortStatsLateCollisions?
This counts collisions detected more than 512 bit-times (51.2 microseconds on 10Mbps Ethernet) after a transmission starts. Engineers care about late collisions because they often indicate cable length violations or hardware problems rather than normal network congestion. A rising count of late collisions (like 15 per minute) typically means the network topology exceeds IEEE specifications or there's a broken repeater.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1751.2.18.10.7.1.9 snmpwalk -v2c -c public <target> ACMIB::ethernetPortStatsLateCollisions
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.1751.2.18.10.7.1.9.1 snmpget -v2c -c public <target> ACMIB::ethernetPortStatsLateCollisions.1
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OID Breakdown
Upper-level ancestors (6 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 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.1751 | lucent | ACMIB |
| 1.3.6.1.4.1.1751.2 | mibs | ACMIB |
| 1.3.6.1.4.1.1751.2.18 | acMIB | ACMIB |
| 1.3.6.1.4.1.1751.2.18.10 | equipStatistics | ACMIB |
| 1.3.6.1.4.1.1751.2.18.10.7 | ethernetPortStatsTable | ACMIB |
| 1.3.6.1.4.1.1751.2.18.10.7.1 | ethernetPortStatsEntry | ACMIB |
| 1.3.6.1.4.1.1751.2.18.10.7.1.9 | ethernetPortStatsLateCollisions | ACMIB |