Connections from CIM Server to Indication Consumer

If your client can connect to a CIM server and subscribe to indications, but cannot receive indications, use these suggestions to try to resolve the problem.

Firewall Configuration

ESXi ships with a software firewall that is configured by default to block outgoing connection requests. When an indication is triggered, the producer cannot open a connection to the consumer unless the target port is opened in the firewall.

When you create an indication subscription, the CIMOM opens the corresponding port in the firewall for you. To check the firewall configuration, use these commands:

■	esxcli network firewall get

tells you whether the firewall is enabled.

■	esxcli network firewall ruleset list

tells you which specific services are enabled.

To disable or enable the firewall, use these commands:

■	esxcli network firewall set -e false

disables the firewall.

■	esxcli network firewall set -e true

enables the firewall.

It is also possible to create rulesets to open or close firewall ports manually. For information about manual firewall configuration for ESXi, see the vSphere Security Guide.

For information about the esxcli command set, see the manual Getting Started with vSphere Command-Line Interfaces.

System Event Log

Alert indications for a managed server rely primarily on the contents of the System Event Log (SEL). If the SEL is disabled, or if it is full and cannot accept new log entries, you will not receive most alert indications for new events.

If the SEL is full, system status is shown correctly in response to CIM queries, regardless of indication delivery. To receive indications when the SEL is not accepting new entries, you have the following options.

■	Consult your hardware vendor’s system documentation for instructions to clear the SEL.

■	You can clear the SEL from a vSphere Client connected to vCenter Server. On the Hardware tab, choose System Event Log from the View menu and click Reset event log.