let me know what is the best MTU size of interface for pepwave max mini if we running IPSec ? i didn’t mean for pepvpn.
What is the best MTU of interface if we are using GRE ?
Now interface default MTU is 1428.
I created IPSec on interface and try ping test with mtu size. I got below result. So do i need to increse interface mtu 1428 to 1500 or reduce to 1400 ?
C:\Users\admin>ping 192.168.0.1 -f -l 1340
Pinging 192.168.50.1 with 1340 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\Users\admin>ping 192.168.0.1 -f -l 1330
Pinging 192.168.50.1 with 1330 bytes of data:
Reply from 192.168.50.1: bytes=1330 time=96ms TTL=63
Reply from 192.168.50.1: bytes=1330 time=86ms TTL=63
Reply from 192.168.50.1: bytes=1330 time=247ms TTL=63
Reply from 192.168.50.1: bytes=1330 time=77ms TTL=63
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 77ms, Maximum = 247ms, Average = 126ms
C:\Users\admin>