Netgear XCM8806 Chassis User Manual - Page 216

NETGEAR 8800 User Manual not synchronized. The reason for this design decision is to make sure that the control channel is not overloaded when a high number of log messages are generated. To capture events generated by the primary node onto the backup node, two additional targets are shown in the target commands-one called primary-msm (modular switches) and one called backup-msm (modular switches). The first target is active only on the non-primary (backup) EMS server and is used to send matching events to the primary EMS server. The other target is active only on the primary EMS server and is used to send matching events to all other EMS servers. If the condition for the backup target is met by a message generated on the primary node, the event is sent to the backup node. When the backup node receives the event, it detects if any of the local targets (NVRAM, memory, or console) are matched. If so that event gets processed. The session and syslog targets are disabled on the backup node, as they are handled on the primary. If the condition for the primary target is met by a message generated on the backup, the event is sent to the primary node. Note that the backup target is active only on the primary node, and the primary target is active only on the backup node. Filtering Events Sent to Targets Not all event messages are sent to every enabled target. Each target receives only the messages that it is configured for. Target Configuration To specify the messages to send to an enabled target, you set a message severity level, a filter name, and a match expression. These items determine which messages are sent to the target. You can also configure the format of the messages in the targets. For example, the console display target is configured to get messages of severity info and greater, the NVRAM target gets messages of severity warning and greater, and the memory buffer target gets messages of severity debug-data and greater. All the targets are associated by default with a filter named DefaultFilter that passes all events at or above the default severity threshold. All the targets are also associated with a default match expression that matches any messages (the expression that matches any message is displayed as Match : (none) from the command line). And finally, each target has a format associated with it. To display the current log configuration of the targets, use the following command: show log configuration target {console | memory-buffer | nvram | primary-msm | primary-node | backup-msm | backup-node | session | syslog { | | vr } {[local0 ... local7]}} To configure a target, you use specific commands for severity, filters, and formats. In addition, you can configure the source IP address for a syslog target. Configuring the source IP address allows the management station or syslog server to identify from which switch it received the log messages. To configure the source IP address for a syslog target, use the following command: 216 | Chapter 8. Status Monitoring and Statistics