Henning, thanks for your quick reply. >> Which disadvantages could this mode of operation have compared to the >> classic mode with IPs assigned? > >the backup node might not be able to reach the network on the carp if
Hmm... what does this mean to me..? To make it more precise - my setup looks like this: Physical NIC -> trunk interface -> vlan interface = physical interface of the carpdev -> carpdev -> virtual IP (no IP on the vlan interface) I tested this setup and experienced unpredictable transitions from and to master/backup state on different carp groups configured that way and also unstable connections with >50% packet loss. I strictly followed the carp/pfsync configuration guidance in respect of advskew, sysctl.conf options and so on. So I wondered if this may have been caused by the "no IP" configuration. Is multicast only used when there are no IPs configured for the physical interfaces of the carpdevs? Regards Christoph Private Universität Witten/Herdecke gGmbH Alfred-Herrhausen-Straße 50 D - 58448 Witten Homepage: http://www.uni-wh.de Twitter: http://twitter.com/UniWH Facebook: http://www.facebook.com/UniWH Geschäftsführung: Prof. Dr. Martin Butzlaff (Präsident), Dipl. oec. Jan Peter Nonnenkamp (Kanzler) Sitz der Gesellschaft: Witten Handelsregister des Amtsgerichts Bochum Nr. HRB 8671
