Scenario 18

Scenario:

The management port on an ESXi host is not responding. You need to use the ESXi Shell directly from the console of the host to troubleshoot. You suspect the problem is that the speed and duplex of the network adapter is incorrect or that the associated VLAN is incorrect.

Requirements:

Access the console of the ESXi host and access the ESXi Shell.

Use an ESXCLI command to display a list of all standard virtual switches.

Use an ESXCLI command to display a list of all standard virtual port groups.

From this information, determine which virtual switch and uplink(s) are used for management.

Use an ESXCLI command to display information on the physical network adapters and verify that the adapter(s) used by management is set to auto-negotiate and are properly connected at 1000 Mbps and full duplex.

Use and ESXCLI command to change the VLAN for the management network to 100.

Environment Information:

ESXi host: host-02.lab.local

Management network port group: Management Network

VLAN for management network: 100

Speed and Duplex setting for all network adapters: Auto negotiate (which should connect at 1000 Mbps)

VDCA510 Objective: 6.3 Troubleshoot Network Performance and Connectivity
VDCA550 Objective: 2.3 Troubleshoot Virtual Switch Solutions

Guide Reference(s):

Chapter 4 – Troubleshoot Network Performance and Connectivity - Utilize the DCUI and the ESXi Shell to Troubleshoot ESXi Networking

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Solution

Connect to console of the ESXi Host and log on to the ESXi Shell. Use the following commands.

esxcli network vswitch standard list
esxcli network vswitch standard portgroup list
esxcli network nic list
esxcli network vswitch standard portgroup set -p 'Management Network' -v 100

NOTE: in your lab environment, these steps may actually disrupt your connection to the Management Network because your network is not configured to support VLAN 100 on the connections to vmnic0 and vmnic1. If this is true, use similar commands to change the VLAN back to zero.