Show log command on 4500

[tarun_cisco]

Dear all,

If I do a show log command on switch it starts showing logs which are several months old.

How can I filter those to show only last month log -like pipe is one way or anything to be set on switch.

Also if I do sh log and if it starts showing logs for last 6 months then i can't break it and hence might b causing overhead.

Please advise.

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[johnlloyd_13]

Hi,

You can filter your syslogs using the pipe command.

Switch#sh log | i Aug

You can lower the syslog buffer on your switch or use a dedicated syslog server in to prevent any overhead.

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[Somasundaram Jayaraman]

Hi,

I believe there is no other options to view the logs options apart from using the pipe filter.

or we can tune the logging level in such a way to capture only the interested message by applying the below options.

There are eight levels of logging. If you specify a particular level of logging for console logging, for example the messages of that level and of the higher levels (numerically lower) are forwarded to the console.

Level	Logging Message
0	Emergencies
1	Alerts
2	Critical
3	Errors
4	Warnings
5	Notifications
6	Informational
7	Debugging

Router(config)# logging monitor error

Now let us discuss the anatomy of the logging messages. Each message is associated with one of the eight levels of logging, which is referred to as the severity of the message

Level Name	Severity	Description	Syslog Definition
Emergencies	0	System unusable	LOG_EMERG
Alerts	1	Immediate action needed	LOG_ALERT
Critical	2	Critical conditions	LOG_CRIT
Errors	3	Error conditions	LOG_ERR
Warnings	4	Warning conditions	LOG_WARNING
Notifications	5	Normal significant conditions	LOG_NOTICE
Informational	6	Informational messages only	LOG_INFO
Debugging	7	Debugging messages	LOG_DEBUG

Hope this helps

Cheers

Somu

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