Root-cause
analysis for SDN
Root-cause problems for SDN classes
and Root-cause problems for NSX-T classes table lists the
root-cause problem diagnosed and the impacted classes.
Class
| Root-cause
| Events (symptoms) of root cause
| Impacted class
| Events
|
|---|---|---|---|---|
ControllerNode
| Down
| ControllerDown
| ControlCluster
| ReducedRedundancy
|
Down
| ||||
AtRisk
| ||||
APIServerDown
| APIServerMightBeDown
| ControlCluster
| ReducedRedundancy
| |
Down
| ||||
AtRisk
| ||||
EdgeGateway
| Unresponsive
| UnresponsiveSymptom
| No impacted classes.
| No events.
|
Hypervisor
| Down
| HypervisorPowerOff
| VirtualMachine
| MightBeUnreachable
|
VMLostConnection
| ||||
Unreachable
| ||||
IP
| Unresponsive
| |||
Tunnel
| Disconnected
| |||
Hypervisor
| HostLostConnectionToAtLeastOneDatastore
| |||
HostLostConnection
| ||||
Disconnected
| MightBeDisconnected
| No impacted classes.
| No events.
| |
ShutDown
| HostShutdown
| VirtualMachine
| MightBeUnreachable
| |
VMLostConnection
| ||||
Unreachable
| ||||
IP
| Unresponsive
| |||
Tunnel
| Disconnected
| |||
LogicalPort
| Down
| LinkDown
| VirtualMachine
| PoweredOff
|
GuestOSNotRunning
| ||||
Unreachable
| ||||
MightBeUnreachable
| ||||
Disabled
| AdminDown
| VirtualMachine
| PoweredOff
| |
GuestOSNotRunning
| ||||
Unreachable
| ||||
MightBeUnreachable
| ||||
LogicalRouter
| Unresponsive
| UnresponsiveSymptom
| No impacted classes.
| No events.
|
VirtualMachine
| PoweredOff
| PoweredOffE
| LogicalRouter
| AtRisk
|
Unresponsive
| ||||
EdgeGateway
| AtRisk
| |||
Unresponsive
| ||||
Unreachable
| MightBeUnreachable
| No impacted classes.
| No events.
|
Class
| Root-cause
| Events (symptoms) of root cause
| Impacted class
| Events
|
|---|---|---|---|---|
Host
| Down
| ESX host Down hosting Edge Node
| EdgeCluster
| ReducedRedundancy
AllComponentsDown
AtRisk
ExternalTrafficImpaired
|
EdgeNode
| Down
| |||
VIrtualMachine
| DownOrImpaired
| |||
Hypervisor
| Down
| |||
Tunnel
| Down
Disconnected
| |||
TransportNode
| Down
| |||
LogicalRouter
| LogicalRouterDown
| |||
Host
| Down
| ESX host Down hosting compute VMs
| VIrtualMachine
| DownOrImpaired /
|
Hypervisor
| Down
| |||
Tunnel
| Down
Disconnected
| |||
TransportNode
| Down
| |||
VmKernelPort
| IfLostConnection
| |||
Interface
| Down
| ESX host Interface DOWN (Carrying Tunnel Traffic)
| VirtualMachine
| DownOrImpaired
|
Tunnel
| Down/TunnelTrafficImpaired
Disconnected
| |||
TransportNode
| Down
| |||
VmKernelPort
| IfLostConnection/IfDown
| |||
Tenant
| EastWestTrafficImpaired
This event is generated only when VIO and NSX-T both
discovered.
| |||
LogicalSwitch
| ConnectivityImpaired
| |||
Cable
| Down
| Cable (Connected to Compute Hypervisor Host) carrying tunnel
traffic DOWN
| VirtualMachine
| DownOrImpaired
|
Tunnel
| Down/TunnelTrafficImpaired
Disconnected
| |||
TransportNode
| Down
| |||
VmKernelPort
| IfLostConnection/IfDown
| |||
Tenant
| EastWestTrafficImpaired
This event is generated only when VIO and NSX-T both
discovered.
| |||
LogicalSwitch
| ConnectivityImpaired
| |||
Interface
| Down
| ESX host hosting Edge Nodes Interface DOWN (Carrying
External/Tunnel Traffic)
| VirtualMachine
| DownOrImpaired
|
Tunnel
| Down
Disconnected
| |||
TransportNode
| Down
| |||
VmKernelPort
| IfLostConnection/IfDown
| |||
Tenant
| EastWestTrafficImpaired
This event is generated only when VIO and NSX-T both
discovered.
| |||
LogicalSwitch
| ConnectivityImpaired
| |||
EdgeNode
| Down
| |||
EdgeCluster
| ExternalTrafficDown/ ExternalTrafficImpaired/TunnelTrafficDown
| |||
Cable
| Down
| Cable(Connected to Edge HypervisorHost) carrying tunnel/External
traffic DOWN
| VirtualMachine
| DownOrImpaired
|
Tunnel
| Down
Disconnected
| |||
TransportNode
| Down
| |||
VmKernelPort
| IfLostConnection/IfDown
| |||
Tenant
| EastWestTrafficImpaired
This event is generated only when VIO and NSX-T both
discovered.
| |||
LogicalSwitch
| ConnectivityImpaired
| |||
EdgeNode
| Down
| |||
EdgeCluster
| ExternalTrafficDown/ ExternalTrafficImpaired/TunnelTrafficDown
| |||
Switch
| Down
| Switch (Directly connected to Compute Hypervisor) Down
| VirtualMachine
| DownOrImpaired
|
VmKernelPort
| IfLostConnection/IfDown
| |||
Tunnel
| Down
Disconnected
| |||
Tenant
| EastWestTrafficImpaired
This event is generated only when VIO and NSX-T both
discovered.
| |||
LogicalSwitch
| ConnectivityImpaired
| |||
Switch
| Down
| Switch (Directly connected to Edge Hypervisor) Down
| VirtualMachine
| DownOrImpaired
|
LogicalRouter
| LogicalRouterDown
| |||
Host (compute VM)
| Unresponsive
| |||
EdgeNode
| Down
| |||
EdgeCluster
| AllComponentsDown/ExternalTrafficDown/
ExternalTrafficImpaired/TunnelTrafficDown
| |||
TrunkCable
| Down
| Trunk cable Carrying tunnel Traffic Down
| Tunnel
| Down
Disconnected
|
LogicalSwitch
| ConnectivityImpaired
| |||
Host
| Down
| ESX host DOWN hosting NSX-T manager
| NSXManager
| Unreachable
|
VirtualMachine
| DownOrImpaired
| |||
Hypervisor
| Down
| |||
VIrtualMachine
| Down
| VirtualMachine hosting Edge is Down
| LogicalRouter
| LogicalRouterDown
|
EdgeNode
| Down
| |||
Tunnel
| Disconnected, Down
| |||
VIrtualMachine
| PoweredOff
| VirtualMachine hosting ControllerNode is PoweredOff
| ControllerNode
| Down
|
ControllerCluster
| ReducedRedundancy
AllComponentsDown
AtRisk
|