Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH 사용자 설명서

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.

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 {<ipaddress> | 

<ipPort> | vr <vr_name>} {[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: