How long will LLDP-data be stored/cached on a node?

[user54119]

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?

[victor]

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

[user54119]

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.

[doki]

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.

[user54119]

This bug ist still existing in V1.2.15. Our Peer Node information (LLDP) are still not updated.

[user54119]

will this be fixed in V1.2.16? I can't delete all affected nodes.

[victor]

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

[doki]

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.

[user54119]

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.

[user54119]

Any news in this case. Or do you need more information or tests?

[user54119]

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.

[victor]

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

[user54119]

Hi Victor

Thank you. So I await the next release

Dani

[doki]

Thanks Victor, cant wait for the next release

[user54119]

will this fix definitely be in V1.2.17?

[victor]

yes, I've made changes in topology discovery module. Now it should correctly remove outdated information (it does on my tests).

Best regards,
Victor

[user54119]

For me it seems also fixed. No old topology info anymore. Thanks Victor.