Don't Fragmented packet over 1372 byte

Question

I have tunnel ipsec in 2 site but don't passet packet over 1372 byte someone can help me to solve the problem 
 
 Thaks 
 
 for example with a 1400 byte ping from this error 
 C:\Users\Administrator>ping 192.168.0.249 -l 1400 
 Pinging 192.168.0.249 with 1400 bytes of data: Reply from 10.1.128.36: Packet needs to be fragmented but DF set. Reply from 10.1.128.36: Packet needs to be fragmented but DF set. Reply from 10.1.128.36: Packet needs to be fragmented but DF set. Reply from 10.1.128.36: Packet needs to be fragmented but DF set. 
 Ping statistics for 192.168.0.249: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), 
 C:\Users\Administrator>

Vivek Jagad · Answer

Hey Massimiliano Talin1 , Thank you for reaching out to the community, can you try changing the mss value of the Port interface where your WAN gateway is linked with that IPsec tunnel !! Change the mss value to 1360 or 1280 !!