I see you already figured it out while I was creating this. But you may still find it useful if you want to understand why, instead of just finding something that works.
You need to create “connections” from the switch ASIC to the CPU.
My guess is that you currently have Layer 2 connectivity on vlan 100, but there is no connection to the CPU/Routing Engine/services (like DHCP)
You need to add the switchbridge1 as a tagged member of the CPU to Switch ASIC “internal trunk”. Add it should include the parts in blue
/interface bridge vlan
add bridge=switchbridge1 comment=HUS-DEN-Wired-LAN tagged=**switchbridge1,**qsfp28-1-1,qsfp28-1-2 untagged=sfp28-6,sfp28-7 vlan-ids=100
add bridge=switchbridge1 comment=HUS-DEN-Wireless-LAN tagged=**switchbridge1,**qsfp28-1-1,qsfp28-1-2 vlan-ids=101
add bridge=switchbridge1 comment=HUS-DEN-VoIP-LAN tagged=**switchbridge1,**qsfp28-1-1,qsfp28-1-2 vlan-ids=102
add bridge=switchbridge1 comment=HUS-DEN-Guest-LAN tagged=**switchbridge1,**qsfp28-1-1,qsfp28-1-2 vlan-ids=103
add bridge=switchbridge1 comment=HUS-DEN-NetTools tagged=**switchbridge1,**qsfp28-1-1,qsfp28-1-2 vlan-ids=108
Here are some other links to see
@anav’s beginner’s configuration guide (see section C) https://forum.mikrotik.com/viewtopic.php?p=906567
The first link is the one I found more useful than the “cookbook” that the previous post link, if you want to really understand instead of see an example with little explaination.
After you read RouterOS bridge mysteries explained, you can see my additions to what @sindy wrote in the two post starting here.