On Wed, 9 Jul 2014 08:31:23 -0300 Bruno Galindro da Costa bruno.galindro@gmail.com wrote:
Yes, you are right. This is the message that apeared in logs and I was thinked that is was an error... my mistake sorry... What this message means?
2014-07-03 10:26:32,806 [WARNING timestamps.timestampchecker] [topo 150.162.250.252] 'lldp': retrieved empty timestamp
Normally, when the LLDP-MIB is properly implemented, one should be able to retrieve a timestamp (lldpStatsRemTablesLastChangeTime) that represents the sysUpTime of the system when the lldpRemTable was last updated.
NAV retrieves this timestamp before polling the lldpRemTable, so it can detect whether there have been any changes that warrant a new poll. If things are pretty static, this means NAV can avoid spending time on polling the device for the full lldpRemTable unnecessarily.
This warning message is NAV telling you that it couldn't retrieve a timestamp from this device, so it will poll the full lldpRemTable every time it checks for updates.