NetXMS Support Forum

English Support => General Support => Topic started by: Dani@M3T on June 17, 2014, 03:00:44 PM

Title: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on June 17, 2014, 03:00:44 PM
We changed the connection between two LLDP-capable switches:

First Switch1-Port7 connected to Switch2-Port1,
Then we changed to Switch1-Port2 connected to Switch2-Port8.

Now in [Object Details] - [Interfaces] of node Switch1 I can see Switch2 connected to Port 2 AND 7. the same MAC and the same IP-Addresse and Peer Discovery on both interfaces = LLDP. The same on Switch2.
When I look at [Tools] - [Info] - [Topology Table (LLDP)] there is only the new connection.

Is there something like a Lease Time for LLDP information?
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Victor Kirhenshtein on June 20, 2014, 10:30:40 PM
Topology information updated during topology polls (every 15 minutes by default). You can also do manual topology poll via Poll -> Topology menu on node. If incorrect link information stays more than topology polling interval then it's a bug.

Best regards,
Victor
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on June 21, 2014, 10:58:29 AM
I know and I tried that before (topology polls). But the old link information stays on both switches for ever. So it's maybe a bug.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: doki on July 15, 2014, 05:14:22 PM
I also encounter this issue, looks like a bug. What i do as a workaround, is to delete the node and re-add it and the run a topology discovery poll.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on July 28, 2014, 09:21:58 PM
This bug ist still existing in V1.2.15. Our Peer Node information (LLDP) are still not updated.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on August 01, 2014, 01:26:50 PM
will this be fixed in V1.2.16? I can't delete all affected nodes.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Victor Kirhenshtein on August 07, 2014, 05:16:55 PM
Hi,

supposedly I've found the problem. I've made necessary changes in 1.2.16. Please let me know if your problem will be solved after upgrade.

Best regards,
Victor
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: doki on August 08, 2014, 05:23:34 AM
I still encounter the problem, the old link still stays on the interface even i run a network poll on both switch (previously connected but not connected anymore). I deleted one switch and re-add then run the topology poll the link is gone.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on August 10, 2014, 03:50:58 PM
I still see the same error too. The same as I described in my first post. Which information do you need for further troubleshooting? I also see a lot of SYS_IF_PEER_CHANGED events from different nodes but nothing has changed in topology.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on August 20, 2014, 04:50:48 PM
Any news in this case. Or do you need more information or tests?
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on September 02, 2014, 01:10:33 PM
This bug generates a lot of SYS_IF_PEER_CHANGED events on every topology poll (every 15min).
Beside the out-dated LLDP topology information I also see out-dated FDB information.
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Victor Kirhenshtein on September 09, 2014, 09:11:42 PM
Hi,

I was able to reproduce this problem on my system and found the bug causing it. I'll fix it till next release.

Best regards,
Victor
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on September 09, 2014, 09:16:21 PM
Hi Victor

Thank you. So I await the next release

Dani
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: doki on September 10, 2014, 05:16:26 AM
Thanks Victor, cant wait for the next release :)
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on October 16, 2014, 11:18:49 PM
will this fix definitely be in V1.2.17?
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Victor Kirhenshtein on October 17, 2014, 05:09:29 PM
yes, I've made changes in topology discovery module. Now it should correctly remove outdated information (it does on my tests).

Best regards,
Victor
Title: Re: How long will LLDP-data be stored/cached on a node?
Post by: Dani@M3T on October 20, 2014, 07:00:32 PM
For me it seems also fixed. No old topology info anymore. Thanks Victor.