Hi Júlíus, thank you for your message.
i’ve created again a new zone (new DB from scratch) and do following traffic tags: Physical Network 1, Isolation Method: VXLAN * GUEST (without Label) * MANAGEMENT (brcsmm1) * PUBLIC (without Label) * STORAGE (brdrbd1) log show: Error: argument "brvxlan1028-1096" is wrong: "name" not a valid ifname Failed to create br: brvxlan1028-1096 Failed to create vnet 1096: Error: argument "brvxlan1028-1096" is wrong: "name" not a valid ifname/usr/share/cloudstack-common/scripts/vm/network/vnet/modifyvlan.sh: line 59: /proc/sys/net/ipv6/conf/brvxlan1028-1096/disable_ipv6: No such file or directoryCannot find device "brvxlan1028-1096"Failed to create br: brvxlan1028-1096 brvxlan1028-1096 - don’t know why this is used or created, brvxlan1028 is brcsmm1 with subinterface vxlan1028 1096 is my public guest Network, but i didn’t used it in the wizard. and i can’t explain why still modifyvlan instead of modifyvxlan is used. Maybe if NO Traffic Label is set, it uses modifyvlan? Best Regards, Jan Von: Júlíus Þór Bess <[email protected]> Datum: Montag, 2. Februar 2026 um 18:10 An: [email protected] <[email protected]> Betreff: Re: VXLAN-EVPN Bridge Name and Traffic Labels Hi Jan, Max ifname length is 15 characters, so yes. The ifname of brvxlan1028-1096 is too long. Did you replace the modify-vxlan.sh with the EVPN-VXLAN version? Otherwise you're using the multicast version. I also notice that the modifyvlan.sh (notice vlan, not vxlan) is executing and trying to create a VLAN on a traditional bridge... That's probably not what you want. What should happen is that modifyvxlan.sh should have created another bridge named brvx1096 which should have a bridge slave of vxlan1096. Names might not be entirely correct but you probably get what I mean. On 2/2/26 4:56 PM, Jan V�hringer via users wrote: > Hi Cloudstack Community, > > i have trouble with the Zone/Welcome Wizard in Cloudstack - the System > VMs are in a deployment/reboot loop. > Maybe because of the wrong or too long Bridge Name for VXLAN with EVPN. > > * > Setup modify sh for VXLAN with EVPN > * > The Hosts have two physical NICs: > o > eno1 = Transfer LAN-1 OSPF 172.16.11.2/30 > o > eno2 = Transfer LAN-2 OSPF 172.16.12.2/30 > o > lo = Loopback for BGP with EVPN 10.1.0.1/32 > o > brdrbd1 = Bridge for DRBD / Linstor Traffic 10.10.26.101 /24 > + > vxlan1026 as Subinterface, added by NMCLI > o > brcsmm1 = Bridge for Cloudstack Management Traffic > 10.10.28.101 /24 > + > vxlan1028 as Subinterface, added by NMCLI > > > i’m looking for „normal“ VXLAN Bridges like brvxlan2001 for example > customer1... > > After the Wizard completes, the Systems VMs are permanently > rebooted/deployed. And the Wizard create following Interfaces: cloud0 > and vxlan1028.1096@vxlan1028 > > Log Show (1096 should be the public VXLAN): > "“result”:“false”,“details”:“Failed to create vnet 1096: Error: > argument \"brvxlan1028-1096\" is wrong: \"name\" not a valid ifname... > Cannot find device \"brvxlan1028-1096\" Failed to create br: > brvxlan1028-1096” > Failed to create vnet 1096: Error: argument "brvxlan1028-1096" is > wrong: "name" not a valid > ifname/usr/share/cloudstack-common/scripts/vm/network/vnet/modifyvlan.sh: > line 59: /proc/sys/net/ > ipv6/conf/brvxlan1028-1096/disable_ipv6: No such file or > directoryCannot find device "brvxlan1028-1096"Failed to create br: > brvxlan1028-1096 > > > i’ve following setups without success: > SCR-20260129-kvah.png > and > image.png > > have someone a idea how to create the Interfaces and Traffic Types? > > Best Regards, > Jan
