Hi, This seems to be a very typical issue for cloud platforms. The switch ports need to be configured as trunk mode.
-Wei On Tuesday, July 23, 2024, Alexandru Stan <[email protected]> wrote: > Hello. I am dealing with a weird networking issue that I never experienced > before and I really can't find anything relevant in logs or else. The setup > is like this: > > * Kvm hosts with 2 slave interfaces (for redundancy) under a master > bridge called br0 > * The 2 interfaces are connected to 2 stacked Cisco switches > * Traffic for management, guest, public, etc. goes through this bridge > only > * ACS zone added with advanced network, br0 label set on each traffic > type > > Everything seems fine, the system vms are up & running, hosts are added > without issues, etc. The cloud0 bridge is created on each host as it > should. Now, if I add a vm on a certain host and the virtual router > (simple, isolated network) is on the same host, everything works fine, the > vm gets its own ip, dns, internet conectivity, etc. But if I add a vm to a > different host than where the VR is hosted, I don't get any network for the > vm. The virtual interfaces are created on the host but the cloud0 bridge > status is either down or unknown. > Could this be related to the hardware setup or it's something ACS related? > > Thank you! >
