STP from Stackport1 - Network crash

[InfectedGTi180]

Hi,

I've got a problem on my infrastructure. I often have some spanning-tree recalcul.

This morning again, my network crashed. All my switchs were Down in Centreon (ping lost).

TESTS-RZ5-1.1#show spanning-tree detail | i from|exec|occur
 MST0 is executing the mstp compatible Spanning Tree protocol
  Number of topology changes 2702 last change occurred 00:10:39 ago
          from StackPort1
 MST1 is executing the mstp compatible Spanning Tree protocol
  Number of topology changes 2773 last change occurred 00:10:39 ago
          from StackPort1

This topology changes is the cause of my network crash (same time), but I don't know how to solve it.

Can someone help me ?

Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 12    WS-C3750G-12S      12.2(55)SE11          C3750-IPBASEK9-M
     2 12    WS-C3750G-12S      12.2(55)SE11          C3750-IPBASEK9-M

Thank you.

[salemmahara]

Try below command on your stack : spanning-tree VLAN 1-4096 root primary Is your stack up ? Have you been in a trouble like failed master last days ?

[InfectedGTi180]

Hi, no this is not my stp root primary, and no, the first switch is already Master in stack.

[salemmahara]

could yous end us the topology here as a JPG file pleas