The most important is how those figures are evolving I guess.
If you have 51 vlans, it could be a single transition. If the alternate port(s) came up before the current root port, there might have been an uplinkfast transition without any failure. And this transition might have occurred 1 year ago;-) In that case you should not be worried.
On the other hand, you can have a single vlan that had its root port flapping 51 times in the last hour. In which case you might have indeed something going on.
It's impossible to make a difference between those two cases with just one snapshot.
thanks for the answer - this is an interesting point! We actually have nearly 50 VLANs and when I include all the default VLANs, it could be 51.
The reason why I'm monitoring things like that is that we sporadically see "Hostflapping" syslog messages and the MAC-Adress is always flapping between the uplink-port and a local access-port. First I couldn't understand how this can happen but now I'm convinced that it's related to this Uplinkfast swichovers.
And as long as this happens only sporadically I really don't have to worry, do I?
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[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
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IntroductionOSPF, being a link-state protocol, allows for every router
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