Snmpwalk command times out when more than 10 LUNs are attached to an ESXi host

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• You are unable to monitor an ESXi host using SNMP when the host has more than 10 storage LUNs attached.
• Monitoring an ESXi host using the snmpwalk command fails.
• A timeout occurs when the SNMP agent tries to gather information about the ESXi host. You see the error:
  
  Failed to get value of SNMP variable. Timeout.
  
  
• Running the snmpwalk command on an ESXi host times out with the error:
  
  Timeout: No Response from xxx.xxx.xxx.xxx

Environment

VMware vSphere ESXi 5.5
VMware vSphere ESXi 5.1
VMware vSphere ESXi 5.0

Cause

Resolution

This is a known issue affecting ESXi 5.0, 5.1 and 5.5.

This issue is resolved in ESXi 5.1 Patch 4. For more information, see VMware ESXi 5.1, Patch Release ESXi510-201404001 (2070666).

This issue is resolved in ESXi 5.5 Update 2. For more information, see VMware ESXi 5.5 Update 2 Release Notes.

Currently, there is no resolution or work around for ESXi 5.0.

Additional Information

For more information about SNMP, see:

• Debugging with the esxcli system snmp test command (2033528)
• SNMP inform configuration errors in syslog (2033526)

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SNMP inform configuration errors in syslog
Debugging with the esxcli system snmp test command
VMware ESXi 5.1, Patch Release ESXi510-201404001