So nobody an idea why I cannot access the switch? Or enlighten me further? What akakua has suggested is already implemented, like being part of my network already...
Is the config you posted still accurate?
If so, can you explain the purpose of bridge2? That isn't normally recommended when using the "new way" of vlans. Instead of creating more than one bridge, you should put everything into the same bridge. Think of each bridge as a separate virtual switch. I don't understand enough about the implications to know if that's causing a problem or not.
But the thing that does "pop out" as a problem is that you don't have any connection from the ports to the the bridge i.e. the "CPU's connection to the switch". Both @BrateloSlava in
post #13 and @akakua in
post #14 have included the bridge device (in different positions in the line) in the /interface bridge vlan stanza, but perhaps you didn't notice what they were referring to (it can be hard to see things when you don't know what the different part is, and unless you use a differences tool).
I.e. your configuration is missing the parts in
red. And can you explain what the purpose of the
green part is?
/interface bridge
add admin-mac=08:55:31:94:90:13 auto-mac=no comment=defconf name=bridge \
vlan-filtering=yes
add name=bridge2
/interface bridge vlan
add bridge=bridge tagged="
bridge,ether24_opnsense2,ether23_opnsense1,ether21_SynoBond\
1,sfp-sfpplus3_proxmox,sfp-sfpplus1_wifi" untagged=\
ether2_nosbox,ether3_IPMI-edgebox,ether1_edgebox vlan-ids=10
add bridge=bridge tagged="
bridge,ether24_opnsense2,ether23_opnsense1,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=90
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=20
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=30
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=40
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=50
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=60
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=70
add bridge=bridge tagged="
bridge,ether23_opnsense1,ether24_opnsense2,sfp-sfpplus3_pro\
xmox,sfp-sfpplus1_wifi" vlan-ids=80
add bridge=bridge2 tagged=bridge2,VLAN_50 vlan-ids=50