I am brand new to log analysis and I came across some Cisco Switch and Rout er logs (that require me to analyse them). The logs contain 4 fields;the fi rst three were easy to fathom (Datetime, error severity, source IP) but the fourth is not. I have scoured the internet looking for explanation but hav e been unable to get any. Could somebody please explain what the following means, for example:
2464: 006077: Dec 28 22:35:12: %LINK-3-UPDOWN: Interface FastEthernet0/33, changed state to up What do the numbers (2464, 006077) mean ? What does 'LINK-3-UPDOWN' mean ? What does 'changed state to up' mean ?
And
18312: 5w4d: %LINK-3-UPDOWN: Interface FastEthernet0/12, changed state to d own Many thanks in advance.