Are you sure that the vlan interface were never down on active router? Can you check the logs and confirm? If 3 hello packet are missed continuously from active to standby it will failover.
This can be due to network congestion that 3 packets got dropped or may be your something happen to the hardware that 3 packets got dropped. Can you recheck the logs and confirm? Which platform is this?
I will like to know which platform is this? One of the reason all vlans can flap is if lets say there is only a trunk link between this switch and some layer 2 switch downlink and no other machines are connected to these vlans on layer 3 switch and if trunk port flaps all layer 3 virtual interfaces may flap.
I will not recommend to increase the HSRP timers untill and unless required and will like to know what is the root cause of this issue. So did you get a chance to look at the logs?
Did you see interface vlans went down and come up in your logs? No errors related to line cards? I belive if there is a congestion or communication failure for short while between your msfc and sups this may cause an issue but because you do not see anything specific in logs I doubts that is an issue.
Not sure though why HSRP moves to standby router but if you see vlan interface flapped that was a potential cause of HSRP moves to standby router but why vlan interface flapped can be only determined if we see something wrong in logs which as you mentioned does not have anything.
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...