All MIBs › SWITCH-RMON-MIB › rEtherHistoryFragments
rEtherHistoryFragments
Module: SWITCH-RMON-MIB
OID (symbolic): SWITCH-RMON-MIB::rEtherHistoryFragments
OID (numeric): 1.3.6.1.4.1.8886.6.1.22.2.2.1.12
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: The total number of packets received during this sampling interval that were less than 64 octets in length (excluding framing bits but including FCS octets) had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error).
Note that it is entirely normal for etherHistoryFragments to increment. This is because it counts both runts (which are normal occurrences due to collisions) and noise hits.
What is rEtherHistoryFragments?
This counter records packets shorter than 64 octets with a bad FCS that occurred during this specific sampling interval; as with the live stats version, some baseline level of fragments is normal due to collisions and noise. Admins watch for buckets where this spikes well above the segment's typical baseline.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.8886.6.1.22.2.2.1.12 snmpwalk -v2c -c public <target> SWITCH-RMON-MIB::rEtherHistoryFragments
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.8886.6.1.22.2.2.1.12.1 snmpget -v2c -c public <target> SWITCH-RMON-MIB::rEtherHistoryFragments.1
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4.1.8886 | raisecom | RAISECOM-BASE-MIB |
| 1.3.6.1.4.1.8886.6 | iscomSeries | RAISECOM-BASE-MIB |
| 1.3.6.1.4.1.8886.6.1 | iscomSwitch | RAISECOM-BASE-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.8886.6.1.22 | rmonMib | SWITCH-RMON-MIB |
| 1.3.6.1.4.1.8886.6.1.22.2 | rHistory | SWITCH-RMON-MIB |
| 1.3.6.1.4.1.8886.6.1.22.2.2 | rEtherHistoryTable | SWITCH-RMON-MIB |
| 1.3.6.1.4.1.8886.6.1.22.2.2.1 | rEtherHistoryEntry | SWITCH-RMON-MIB |
| 1.3.6.1.4.1.8886.6.1.22.2.2.1.12 | rEtherHistoryFragments | SWITCH-RMON-MIB |