Please refer the below topology,
Client >>> Cisco router >>> Firewall >>> Upstream device >>> server
I have set mtu as 200 in my upstream device and as exepected when client access the server(http) the packets are fragmented.
However when I set tcp-mss(in my case to 55)on my Firewall, I can see it is successfully shared(updated mss) on 3 way handshake, However I can still see client or server is sending MSS more than 55 which is causing fragmentation.
Is it expected?Kindly help
