Hi, I'm a new user of NAV and have found it to be a very useful tool. Among other things, it has helped us discover and plan improvements to our network topology. After implementing said improvements however, I find myself in a bit of a predicament. Two of my switches were previously connected via a link (in practice a daisy-chain), which is no longer physically present. NAV, of course, does not know the difference between a link that is temporarily down and one that is never coming back up, so the link remains in our netmap.
I have not found a way of removing this link from NAV, short of deleting and re-registering the switches on either end of the link. This would of course mean losing a lot of traffic stats, so I'm wondering if there is any way to tell NAV do forget this specific link? Am I just misunderstanding something fundamental here?
On Tue, 20 Dec 2022 09:01:18 -0000 tom.daae@lom.kommune.no wrote:
Hi, I'm a new user of NAV and have found it to be a very useful tool. Among other things, it has helped us discover and plan improvements to our network topology.
Glad to hear it! :-)
I have not found a way of removing this link from NAV, short of deleting and re-registering the switches on either end of the link. This would of course mean losing a lot of traffic stats, so I'm wondering if there is any way to tell NAV do forget this specific link? Am I just misunderstanding something fundamental here?
Yes and no. If a link is just lost (i.e. operDown), NAV assumes this is an error situation. It (optionally) generates an alert, and keeps the topology information, assuming the the link will eventually come back up again.
If, however, you disable/shutdown the port (admDown) in the switch config, NAV will assume the link loss is intentional, and should remove the topology information.
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Morten Brekkevold -
tom.daae＠lom.kommune.no