Dear expert guys
I m trying to setup my LAN with simple topology:
1. Loop1 : Everything is working well. TP-Link detect it's loopback then block 2 ports, nothing happen with Cisco sw
![loop1.PNG loop1.PNG](https://community.cisco.com/t5/image/serverpage/image-id/11880iB3E2E7F64C822492/image-size/large?v=v2&px=999)
2 Loop2:
![loop2.PNG loop2.PNG](https://community.cisco.com/t5/image/serverpage/image-id/11881i3C2580BE1DAF64EC/image-size/large?v=v2&px=999)
TP Link SG3424 can detect loopback then block (block and auto recovery after every 90s) port connect to TP Link 8 ports.
But the interface vlan on Cisco switch is flapping every time TP-Link recovery block port.
Cisco sw only show log interface vlan up / down, nothing more