Question

A network engineer configures a router with 'logging console 4' and 'logging buffered 6'. During an interface flap, the engineer notices the link up/down messages (severity 3) appear on the console, but informational messages about a DHCP address assignment (severity 6) never appear on the console session, even though they are present in 'show logging' output. What is the reason for this behavior?

Accepted Answer

The console logging level of 4 only displays messages of severity 4 (warnings) and more severe (lower numeric values), so severity 6 messages are excluded from the console.

Answer

The buffered logging level of 6 overrides the console level, so only messages logged to the buffer appear on the console.

Answer

Severity 6 messages are always suppressed on the console unless 'logging console debugging' is explicitly configured.

Answer

The console requires 'terminal monitor' to be enabled before any informational messages can be displayed.