Hi All, we have issues in determining the MSS size for C1117 router with 4G carriage to solve an issue.
Currently we have MSS set as 1310 and MTU as 1455 on the Cellular interface. We are running IPSEC GETVPN to encrypt the data between the router and aggregate router in DC.
I performed the Ping sweep test with DF set which stops at 1283 bytes. Min Bytes = 1250, max Bytes = 1310
could any one be able to confirm if 1282 bytes is the payload + 20 bytes IP + 20 bytes TCP header summing up to MSS as 1312 bytes or MSS is 1282 bytes?
