05-05-2019 10:44 AM - edited 05-05-2019 10:48 AM
In the logs, a serial interface belonging to a router is down, "Interface Serial1/0, changed state to down".
But there isn't a corresponding "Line protocol on Interface Serial1/0, changed state to down" which I would normally expect after the first log message of "interface changed state to down".
Does this mean that for Serial1/0, the line is down but protocol is still up ? What could have caused this ?
The interface went back up after a few seconds based on the logs. "Interface Serial1/0, changed state to up."
05-05-2019 11:04 AM
Hello,
the interface state is the physical layer, if that is down, there is, in theory, no way for the line protocol to NOT be down.
Is this a 'real' router, or a simulator ? How is the serial interface configured ?
05-05-2019 04:40 PM
05-06-2019 01:40 AM
The interface is a PPP link, will there be any info you'll need ?
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