DAI Blocked even though configured to Trust ever port. High Rate STP Topology Change

[mcoomber]

1. I've configured five MS130-48P switches to trust DAI. However, I still have DAI Blocked on one of switches in the events log. 
2. One of the switches initially connected and then disconnected with a message 'High Rate STP Topology Change'. I've tried disconnecting and reconnecting to different ports but still having same issue. All the MS are configured with a trunk port that connects to a catalyst 3850 switch.

Thanks

[ww]

Regarding the stp. Are you running mstp on the 3850?

https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Configuring_Spanning_Tree_on_Meraki_...

[mcoomber]

spanning-tree mode pvst
spanning-tree extend system-id
hw-switch switch 1 logging onboard message level 3

!

!

!

interface GigabitEthernet1/0/18
description "SERVER ACCESS PORT"
switchport access vlan 10
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet1/0/19
description "UPLINK TO ACCESS SW"
switchport mode trunk

The above is the config for the interfaces on the 3850.

[PhilipDAth · Accepted solution]

Change to:
spanning-tree mode mst

[mcoomber]

Will the command below be the current command to execute to change to spanning-tree mst

configure terminal

spanning-tree mst configuration

instance 1 vlan 1-30

name region1

revision 2

exit

spanning-tree mode mst

end

[PhilipDAth]

You only need this one configuration line.

spanning-tree mode mst

[PhilipDAth]

Are you running a current stable firmware for better on the MS130s?  Failing that, try giving the problematic switch a power cycle.

When you say you configured 5 switche sto "Trust DAI" - do you mean you meant into the switch ports and marked the port as trusted?  This is the best method, IMHO.

https://documentation.meraki.com/MS/Other_Topics/Dynamic_ARP_Inspection#Configuring_DAI

[mcoomber]

I'm running firmware 16.9 stable on all switches.

Every port is configured to Trust DAI as per the configure DAI documentation. 

[PhilipDAth]

I would give the MS130 that says it is blocking a reboot.  It sounds like it has not loaded its DAI config correctly.

[PhilipDAth]

>One of the switches initially connected and then disconnected with a message 'High Rate STP Topology Change'

This is a pretty common error - I would ignore it unless it is going on for more than a day.