14.1.7 Checking operation log information

Operation messages are also stored internally as operation log data. You can use this information to manage the operating status of switches and failures.

An operation log records information about events that occur during switch operation in chronological order. This information is the same as the operation messages. The following information is saved as an operation log:

• Operations performed by an operator and the response messages

• Operation message

In a reference log, log information about the failures and warnings occurring on a switch is grouped by message ID. In addition, the reference log also contains information such as the date and time the event occurred the first time, the date and time the event last occurred, and the cumulative number of times that the event occurred.

This data is logged in text format inside the switch. To view the entries, use the show logging operation command. By specifying a pattern string using the grep command, you can view a particular type of log data. For example, you can view logging of faults together by running show logging | grep EVT or show logging | grep ERR. An example is shown below.

> show logging | grep EVT
    :
(omitted in the middle)
    :
EVT 08/10 20:39:38 01S E3 SOFTWARE 00005002 1001:000000000000 Login operator
from LOGHOST1 (ttyp1).
EVT 08/10 20:41:43 01S E3 SOFTWARE 00005003 1001:000000000000 Logout operator
from LOGHOST1 (ttyp1).
    :
(Omitted below)
    :
>