All MIBs › CNTAU-MIB › cnticmpInDuFrags
cnticmpInDuFrags
Module: CNTAU-MIB
OID (symbolic): CNTAU-MIB::cnticmpInDuFrags
OID (numeric): 1.3.6.1.4.1.333.1.5.5
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: The number of times a destination unreachable message was received due to a fragmentation requirement but the Don't Fragment flag is set.
What is cnticmpInDuFrags?
This read-only Counter reports the number of times this node received an ICMP destination-unreachable message indicating a packet needed fragmentation but had the Don't Fragment flag set. An admin diagnosing path MTU problems would treat a rising count here as a strong signal that packets are too large for some link along the path. For example, a jump in cnticmpInDuFrags right after a network change would suggest a new hop in the path has a smaller MTU than before.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.333.1.5.5 snmpwalk -v2c -c public <target> CNTAU-MIB::cnticmpInDuFrags
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.333.1.5.5.1 snmpget -v2c -c public <target> CNTAU-MIB::cnticmpInDuFrags.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cnticmpInDuFrags.1
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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 |
| 1.3.6.1.4.1.333 | cnt | CNT2-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.333.1 | cntau | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.5 | cnticmp | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.5.5 | cnticmpInDuFrags | CNTAU-MIB |