Command Manual – System Management 
Quidway S8500 Series Routing Switches  Chapter 4  System Maintenance Commands
 
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The channels for filtering in all the directions are specified by this configuration 
command. All the information will be sent to the corresponding directions through the 
specified channels. You can configure the channels in the output direction, channel 
filter information, filtering and redirecting of all kinds of information. 
At present, the system distributes an information channel in each output direction by 
default, shown as follows: 
Table 4-13 Default information channel in each output direction 
Output direction  Information channel name 
Console
 
console 
Monitor
 
monitor 
Info-center loghost
 
loghost 
Log buffer
 
logbuffer 
Trap buffer
 
trapbuffer 
snmp snmpagent 
Log file   logfile 
 
In addition, each information channel has a default record with the module name 
“default” and module number as 0xffff0000. However, for different information channel, 
the default log, trap and debugging settings in the records may be different with one 
another. Use default configuration record if a module does not have any specific 
configuration record in the channel. 
Example 
# Configure to enable the log information of VLAN module in SNMP channel and allows 
the output of the information with a level higher than emergencies.  
<Quidway> system-view 
System View: return to User View with Ctrl+Z.  
[Quidway] info-center source vlan channel snmp log level emergencies 
4.6.16  info-center timestamp 
Syntax 
info-center timestamp { log | trap | debugging } { boot | date | none } 
undo info-center timestamp { log | trap | debugging }  
View 
System view