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Knowledge Base

Network redundancy message when configuring vSphere High Availability in vCenter Server (1004700)

Last Updated: 2/27/2024Categories: How toTotal Views: 30748Language:
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Learn how VMware Skyline Advisor and Skyline Health Diagnostics work together to provide proactive intelligence and self-service log analysis.

Use Skyline Advisor to avoid issues before they occur across VCF, vSphere, vSAN, NSX, vROps & Horizon. Skyline Findings are based on top KBs, VMSAs/CVEs and design best practices.

Use Skyline Health Diagnostics to root cause vSphere & vSAN logs when an issue occurs. Skyline Health Diagnostic Findings are based on top KBs and VMSA/CVEs. You can use the Skyline Health Diagnostics tool in online or offline mode.

If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Symptoms

When configuring the vSphere High Availability (HA) in vCenter Server, you see the message:

Host <xxx> currently has no management network redundancy

Purpose

To prevent the Host <xxx> currently has no management network redundancy message when configuring the vSphere High Availability (HA) in vCenter Server, VMware recommends to add a second vmnic to the service console or management network vSwitch configured with NIC teaming, and that you keep both as active adapters, or place one in standby.

Cause

This message is displayed if the network redundancy configuration within theService Console/VMkernel Port Management Network is incorrect. This message can be safely ignored.

Resolution

To prevent this message from appearing, and to comply with proper network redundancy, VMware recommends to add a second vmnic to the service console or management network vSwitch configured with NIC teaming, and that you keep both as active adapters, or place one in standby. For more information, see NIC teaming in ESXi and ESX (1004088).

Alternatively, you can add a second service console on a different vSwitch and subnet.<o></o> To suppress this message on ESXi and ESX hosts in the vSphere High Availability (HA) cluster, or if the warning appears for a host already configured in a cluster, set the VMware HA advanced option das.ignoreRedundantNetWarning to true and reconfigure VMware HA on that host. This advanced option is available in VMware Virtual Center 2.5 Update 3 and later.

If the warning appears even when there are two available uplinks for the vSwitch hosting the Service Console/VMkernel Port Management Network, providing a redundancy, see ESX/ESXi host displays warning message when test condition is false (2008602).

Note: If the warning continues to appear, disable and re-enable VMware High Availability in the cluster.

To set das.ignoreRedundantNetWarning to true:

From the VMware Infrastructure Client, right-click on the cluster and click Edit Settings.

Select vSphere HA and click Advanced Options.

In the Options column, enter das.ignoreRedundantNetWarning

In the Value column, type true.

Note: Steps 3 and 4 create a new option.

Click OK.

Right-click the host and click Reconfigure for vSphere HA. This reconfigures HA.

To set das.ignoreRedundantNetWarning to true in the vSphere 5.1 Web Client:

From the vSphere Web Client, right-click the cluster.

Click the Manage tab for the cluster, then under Settings click vSphere HA.

Click Edit in the top right corner.

Expand the Advanced Options section, and click Add.

In the Options column, type das.ignoreRedundantNetWarning.

In the Value column, type true.

Click OK.

Right-click the host and click Reconfigure for vSphere HA.

Related Information

For more information on Service Console redundancy, see Service Console redundancy for VMware High Availability (1002641).Service Console redundancy for VMware High Availability
NIC teaming in ESXi and ESX
Cuando configura VMware Alta Disponibilidad (HA) en vCenter Server, aparece un mensaje de Redundancia de red
ESX/ESXi host displays warning message when test condition is false
Mensagem de redundância de rede ao configurar o VMware High Availability no vCenter Server
在 vCenter Server 中配置 VMware High Availability 时出现的网络冗余消息
vCenter Server での VMware High Availability の構成時にネットワーク冗長性のメッセージが表示される

Detectable by VMware SkylineTM

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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