Cisco layer 3 switching not communicating with moxa industrial switch

[nbz]

Can someone share their knowledge and experience to explain below troubleshoot scenario.

we have 4 outdoor MOX industrial outdoor switch(for camera)  which is connected as per attached scenario we canot ping the gateway which is in the layer 3 cisco network .we configure in moxa create vlan x for switch management and assingn ip address for each switches and make uplink port as a trunk and taged vlan x .but we cant able ping the gateway.

cisco was configured client and they provided below details to assing in moxa .

Switch Management IP Information:
IP address range for Moxa Switches : 10.255.118.30 – 33

Subnet mask : 255.255.255.0

Gateway : 10.255.118.1

Pri DNS : 10.139.0.20

Switch Management:
VLan ID : 800
Name : Mgmt_Bldg1800

CCTV VLAN Detail:
VLan ID : 118
Name : Bldg1800-CCTV

NATIVE VLAN:
NATIVE VLAN ID : 800
NAME :Mgmt_Bldg1800

please find attached conection diagram and moxa switch configuration backup.

[MHM Cisco World]

check the port in C9300L STP status is it FWD or BLK, 
I think it BLK. 
so as workaround is remove interconnect as shown above, this prevent BPDU receive again from C9300L and STP BLK the port

[nbz]

 the connection are made like this only kindly ignore old attachement (drawing)

[MHM Cisco World]

still there is one interconnect link, 
do you check the port in C9300L ?

[nbz]

as per moxa switch the interconnection link will work only  one side will gets down.more over we removed interconnection from cisco and connect directly (one side only) still it is not communicating.

[MHM Cisco World]

can you share 
show spanning tree for C9300L ?

[amikat]

Hi,

I would try to disable the Turbo Ring DIP Switch at your Moxa switches configurations. Also please check the correct ports connections as for the turbo chain (head-member, member-member, member-member and member-tail). If there is no improvement we need to check the other end, ie. to see the Cisco Cat9500L box configuration.

Best regards,

Antonin