VPN down regularly - Cisco SA520

[Puma24000]

Hello,

Sorry for my bad Englisg.

We have 2 Cisco SA 520 with 2.1.71 firmware configured for VPN site to site.

For some weeks, we have frequently VPN down between these 2 Cisco SA 520. Anything has been changed in configurations.

We are forced to disable and enable VPN in Cisco panel to bring up VPN.

It is the same configuration for 2 SA 520.

Configurations :

Encryption     Authentification

AES-128

SHA-1

SA Lifetime : 28800 s

Thanks you for your help.

Best regards

[Puma24000]

Moreover,

In site A to site B :

In VPN policies :

SA lifetime : 3600 s

in IKE policies :

SA lifetime : 28800 s

Dead Peer Detection : disable

[Puma24000]

Up please