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Knowledge Base

Observed IP range does not show network/VLAN in ESXi (1006744)

Last Updated: 7/28/2021Categories: InformationalTotal Views: 119138Language:
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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

In vCenter Server, the observed IP range does not show the network/VLAN.

While using NIC teaming, only one of the NICs in the team shows a range and the others display None for Observed IP ranges.

Resolution

Observed IP range is generated based on the incoming broadcast packets it detects. Therefore, for NICs that see only unicast/multicast traffic, it displays None.

This can be an expected behavior if some vmnics are not receiving broadcast traffic from the switch. To check that the vmnics are load balancing, verify that there is traffic going over all of the NICs using the esxtop command (when running, enter n to select network statistics). You can also do this at the physical switch level with the counters provided by your vendor.

If every link sees a fair share of frames/packets, your form of load balancing/NIC teaming is probably only sending broadcast traffic over the link which is displaying information for Observed IP range.

This is not considered an issue and can be expected behavior- inquire with the physical switch vendor about broadcast traffic coming from the physical switch.

Related Information

It has been reported that in some cases a reboot of the physical switch is required to resolve the issue.

ESX または ESXi のネットワークで実際の IP の範囲が表示されない

观察到的 IP 范围不显示 ESX 或 ESXi 中的网络

Detectable by VMware SkylineTM

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Suporte USB para ESX/ESXi 4.1 e ESXi 5.0 (1022290)

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Soporte USB para ESX/ESXi 4.1 y ESXi 5.0 (1022290)

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

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Download and Install VMware Fusion (2014097)

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