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kratos
New Contributor

Fortiswitch disconnection with Fortigate

Hello,

 

I have a problem of disconnection with my fortiswitch, the only event of this issue in the fortigate is this: 

 

session dtls terminated (ev21): SERIALNUMBERFORTISWITCH is disconnected 

 

When this happen i lost the comunication with my fortigate, i have too several FortiAP´s this too are disconnected and the wifi connection is lost.

 

Fortiswitch: 3.5.5

Fortigate: 5.4.4

FortiAP: 5.4.1

3 REPLIES 3
makco10
Contributor II

Hello,

 

Try this:

 

1 - Disable PoE in the FortiLink port of your Fortiswitch

2- Upgrade the firmware of your fortiswitch to this version: 3.5.6

 

Regards.

Defend Your Enterprise Network With Fortigate Next Generation Firewall
Defend Your Enterprise Network With Fortigate Next Generation Firewall
kratos
New Contributor

Thank you so much!!

 

Until now i don't have the issue again.

 

Best regards!!!

Prab
New Contributor

kratos wrote:

Hello,

 

I have a problem of disconnection with my fortiswitch, the only event of this issue in the fortigate is this: 

 

session dtls terminated (ev21): SERIALNUMBERFORTISWITCH is disconnected 

 

When this happen i lost the comunication with my fortigate, i have too several FortiAP´s this too are disconnected and the wifi connection is lost.

 

Fortiswitch: 3.5.5

Fortigate: 5.4.4

FortiAP: 5.4.1

Hi Kratos,

 

Could you please post your topology/Network diagram?

 

Thanks & regards,

Prab

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