6.0.1
Table Of Contents
- vSphere Troubleshooting
- Contents
- About vSphere Troubleshooting
- Updated Information
- Troubleshooting Overview
- Troubleshooting Virtual Machines
- Troubleshooting Fault Tolerant Virtual Machines
- Hardware Virtualization Not Enabled
- Compatible Hosts Not Available for Secondary VM
- Secondary VM on Overcommitted Host Degrades Performance of Primary VM
- Increased Network Latency Observed in FT Virtual Machines
- Some Hosts Are Overloaded with FT Virtual Machines
- Losing Access to FT Metadata Datastore
- Turning On vSphere FT for Powered-On VM Fails
- FT Virtual Machines not Placed or Evacuated by vSphere DRS
- Fault Tolerant Virtual Machine Failovers
- Troubleshooting USB Passthrough Devices
- Recover Orphaned Virtual Machines
- Virtual Machine Does Not Power On After Cloning or Deploying from Template
- Troubleshooting Fault Tolerant Virtual Machines
- Troubleshooting Hosts
- Troubleshooting vSphere HA Host States
- vSphere HA Agent Is in the Agent Unreachable State
- vSphere HA Agent is in the Uninitialized State
- vSphere HA Agent is in the Initialization Error State
- vSphere HA Agent is in the Uninitialization Error State
- vSphere HA Agent is in the Host Failed State
- vSphere HA Agent is in the Network Partitioned State
- vSphere HA Agent is in the Network Isolated State
- Configuration of vSphere HA on Hosts Times Out
- Troubleshooting Auto Deploy
- Auto Deploy TFTP Timeout Error at Boot Time
- Auto Deploy Host Boots with Wrong Configuration
- Host Is Not Redirected to Auto Deploy Server
- Package Warning Message When You Assign an Image Profile to Auto Deploy Host
- Auto Deploy Host with a Built-In USB Flash Drive Does Not Send Coredumps to Local Disk
- Auto Deploy Host Reboots After Five Minutes
- Auto Deploy Host Cannot Contact TFTP Server
- Auto Deploy Host Cannot Retrieve ESXi Image from Auto Deploy Server
- Auto Deploy Host Does Not Get a DHCP Assigned Address
- Auto Deploy Host Does Not Network Boot
- Authentication Token Manipulation Error
- Active Directory Rule Set Error Causes Host Profile Compliance Failure
- Unable to Download VIBs When Using vCenter Server Reverse Proxy
- Troubleshooting vSphere HA Host States
- Troubleshooting vCenter Server and the vSphere Web Client
- Troubleshooting Availability
- Troubleshooting Resource Management
- Troubleshooting Storage DRS
- Storage DRS is Disabled on a Virtual Disk
- Datastore Cannot Enter Maintenance Mode
- Storage DRS Cannot Operate on a Datastore
- Moving Multiple Virtual Machines into a Datastore Cluster Fails
- Storage DRS Generates Fault During Virtual Machine Creation
- Storage DRS is Enabled on a Virtual Machine Deployed from an OVF Template
- Storage DRS Rule Violation Fault Is Displayed Multiple Times
- Storage DRS Rules Not Deleted from Datastore Cluster
- Alternative Storage DRS Placement Recommendations Are Not Generated
- Applying Storage DRS Recommendations Fails
- Troubleshooting Storage I/O Control
- Troubleshooting Storage DRS
- Troubleshooting Storage
- Resolving SAN Storage Display Problems
- Resolving SAN Performance Problems
- Virtual Machines with RDMs Need to Ignore SCSI INQUIRY Cache
- Software iSCSI Adapter Is Enabled When Not Needed
- Failure to Mount NFS Datastores
- VMkernel Log Files Contain SCSI Sense Codes
- Troubleshooting Storage Adapters
- Checking Metadata Consistency with VOMA
- Troubleshooting Flash Devices
- Troubleshooting Virtual Volumes
- Troubleshooting VAIO Filters
- Troubleshooting Networking
- Troubleshooting MAC Address Allocation
- The Conversion to the Enhanced LACP Support Fails
- Unable to Remove a Host from a vSphere Distributed Switch
- Hosts on a vSphere Distributed Switch 5.1 and Later Lose Connectivity to vCenter Server
- Hosts on vSphere Distributed Switch 5.0 and Earlier Lose Connectivity to vCenter Server
- Alarm for Loss of Network Redundancy on a Host
- Virtual Machines Lose Connectivity After Changing the Uplink Failover Order of a Distributed Port Group
- Unable to Add a Physical Adapter to a vSphere Distributed Switch
- Troubleshooting SR-IOV Enabled Workloads
- A Virtual Machine that Runs a VPN Client Causes Denial of Service for Virtual Machines on the Host or Across a vSphere HA Cluster
- Low Throughput for UDP Workloads on Windows Virtual Machines
- Virtual Machines on the Same Distributed Port Group and on Different Hosts Cannot Communicate with Each Other
- Attempt to Power On a Migrated vApp Fails Because the Associated Protocol Profile Is Missing
- Networking Configuration Operation Is Rolled Back and a Host Is Disconnected from vCenter Server
- Troubleshooting Licensing
- Index
4 In the vSphere Distributed Switch view, migrate the VMkernel adapter for the network to a standard
switch.
a Select the vSphere Distributed Switch view, and for the distributed switch, click Manage Virtual
Adapters.
b In the Manage Virtual Adapters wizard, select the VMkernel adapter from the list and click
Migrate.
c Select the newly created or another standard switch to migrate the adapter to, and click Next.
d Enter a network label that is unique in the scope of the host and optionally a VLAN ID for the
management network, and click Next.
e Review the settings on the target standard switch and click Finish.
5 In the vSphere Web Client, configure the distributed port group for the management network with
correct settings.
6 Migrate the VMkernel adapter for the management network from the standard switch to a port on the
distributed switch by using the Add and Manage Hosts wizard.
For information about the Add and Manage Hosts wizard, see the vSphere Networking documentation.
7 If you have moved the physical adapter from the proxy switch to the standard switch, you can reattach
it to the distributed switch again by using the Add and Manage Hosts wizard.
Alarm for Loss of Network Redundancy on a Host
An alarm reports a loss of uplink redundancy on a vSphere standard or a distributed switch for a host.
Problem
No redundant physical NICs for a host are connected to a particular standard or a distributed switch, and
the following alarm appears:
Host name or IP Network uplink redundancy lost
Cause
Only one physical NIC on the host is connected to a certain standard or a distributed switch. The redundant
physical NICs are either down or are not assigned to the switch.
For example, assume that a host in your environment has physical NICs vmnic0 and vmnic1 connected to
vSwitch0, and the physical NIC vmnic1 goes offline, leaving only vmnic0 connected to vSwitch0. As a result,
the uplink redundancy for vSwitch0 is lost on the host.
Solution
Check which switch has lost uplink redundancy on the host. Connect at least one more physical NIC on the
host to this switch and reset the alarm to green. You can use the vSphere Web Client or the ESXi Shell.
If a physical NIC is down, try to bring it back up by using the ESXi Shell on the host.
For information about using the networking commands in the ESXi Shell, see vSphere Command-Line Interface
Reference. For information about configuring networking on a host in the vSphere Web Client, see vSphere
Networking.
Chapter 8 Troubleshooting Networking
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