All MIBs › CISCO-UNIFIED-COMPUTING-VNIC-MIB › cucsVnicDynamicConMtu
cucsVnicDynamicConMtu
Module: CISCO-UNIFIED-COMPUTING-VNIC-MIB
OID (symbolic): CISCO-UNIFIED-COMPUTING-VNIC-MIB::cucsVnicDynamicConMtu
OID (numeric): 1.3.6.1.4.1.9.9.719.1.53.3.1.8
Node type: OBJECT-TYPE
Type: Gauge32
Access: read-only
Description: Cisco UCS vnic:DynamicCon:mtu managed object property
What is cucsVnicDynamicConMtu?
This read-only Gauge32 value reports the Maximum Transmission Unit (MTU), in bytes, configured for this Dynamic vNIC Connection setting instance. MTU mismatches between a vNIC and the switches or endpoints it talks to cause silent packet drops or fragmentation, so an admin troubleshooting slow or failing large-payload traffic (like NFS or vMotion) checks this value first. For a service profile configured for 8 dynamic vNICs with fabric-failover protection enabled, for a hypervisor host running many VMs, this OID returning 9000 confirms that connection is configured for jumbo frames, which the admin would need matched end-to-end to avoid fragmentation-related performance problems.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.719.1.53.3.1.8 snmpwalk -v2c -c public <target> CISCO-UNIFIED-COMPUTING-VNIC-MIB::cucsVnicDynamicConMtu
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.719.1.53.3.1.8.1 snmpget -v2c -c public <target> CISCO-UNIFIED-COMPUTING-VNIC-MIB::cucsVnicDynamicConMtu.1
Start monitoring Cisco UCS blade/rack servers and fabric interconnects (vNIC/vHBA) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-UNIFIED-COMPUTING-VNIC-MIB::cucsVnicDynamicConMtu OID value, configure state conditions and alerts, and monitor any Cisco UCS blade/rack servers and fabric interconnects (vNIC/vHBA) from a single console.
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 |
| 1.3.6.1.4.1.9.9.719 | ciscoUnifiedComputingMIB | CISCO-UNIFIED-COMPUTING-MIB |
| 1.3.6.1.4.1.9.9.719.1 | ciscoUnifiedComputingMIBObjects | CISCO-UNIFIED-COMPUTING-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.719.1.53 | cucsVnicObjects | CISCO-UNIFIED-COMPUTING-VNIC-MIB |
| 1.3.6.1.4.1.9.9.719.1.53.3 | cucsVnicDynamicConTable | CISCO-UNIFIED-COMPUTING-VNIC-MIB |
| 1.3.6.1.4.1.9.9.719.1.53.3.1 | cucsVnicDynamicConEntry | CISCO-UNIFIED-COMPUTING-VNIC-MIB |
| 1.3.6.1.4.1.9.9.719.1.53.3.1.8 | cucsVnicDynamicConMtu | CISCO-UNIFIED-COMPUTING-VNIC-MIB |