All MIBs › ME1200-IP-MIB › me1200IpStatisticsGlobalsIpv4ReasmFails
me1200IpStatisticsGlobalsIpv4ReasmFails
Module: ME1200-IP-MIB
OID (symbolic): ME1200-IP-MIB::me1200IpStatisticsGlobalsIpv4ReasmFails
OID (numeric): 1.3.6.1.4.1.9.9.815.1.102.1.4.1.1.14
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-only
Description: The number of failures detected by the IP re-assembly algorithm (for whatever reason: timed out, errors, etc.). Note that this is not necessarily a count of discarded IP fragments since some algorithms (notably the algorithm in RFC 815) can lose track of the number of fragments by combining them as they are received.
When tracking interface statistics, the counter of the interface to which these fragments were addressed is incremented. This interface might not be the same as the input interface for some of the fragments.
Discontinuities in the value of this counter can occur at re-initialization of the system, and at other times as indicated by the value of DiscontinuityTime.
What is me1200IpStatisticsGlobalsIpv4ReasmFails?
This counter counts reassembly attempts that failed partway through, whether from a timeout or an error, rather than producing a complete datagram, tallied system-wide across every IP interface on the switch for IPv4 traffic. A rising value while everything else looks healthy is usually the first sign of a misconfiguration or an attack, so admins graph it alongside the throughput counters rather than reading it alone.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.815.1.102.1.4.1.1.14 snmpwalk -v2c -c public <target> ME1200-IP-MIB::me1200IpStatisticsGlobalsIpv4ReasmFails
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.815.1.102.1.4.1.1.14.1 snmpget -v2c -c public <target> ME1200-IP-MIB::me1200IpStatisticsGlobalsIpv4ReasmFails.1
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OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| 1.3.6.1.4.1.9.9.815 | ciscoME1200MIB | CISCOME1200-MIB |
| 1.3.6.1.4.1.9.9.815.1 | me1200SwitchMgmt | CISCOME1200-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.815.1.102 | me1200IpMIB | ME1200-IP-MIB |
| 1.3.6.1.4.1.9.9.815.1.102.1 | me1200IpMIBObjects | ME1200-IP-MIB |
| 1.3.6.1.4.1.9.9.815.1.102.1.4 | me1200IpStatistics | ME1200-IP-MIB |
| 1.3.6.1.4.1.9.9.815.1.102.1.4.1 | me1200IpStatisticsGlobals | ME1200-IP-MIB |
| 1.3.6.1.4.1.9.9.815.1.102.1.4.1.1 | me1200IpStatisticsGlobalsIpv4 | ME1200-IP-MIB |
| 1.3.6.1.4.1.9.9.815.1.102.1.4.1.1.14 | me1200IpStatisticsGlobalsIpv4ReasmFails | ME1200-IP-MIB |