I recall seeing a post a longgggg time ago discussing incoming MTU at layer 2. Basically the gist was that setting the MTU doesn't necessarily always affect the incoming MTU as some implementations treat it differently.
Specifically in Windows I can confirm that even at layer 2 the host still accepts the high IP MTU packets, and outgoing it will fragment them.
For TCP they will of course negotiate the lowest MSS value and use that, so that traffic remains good.
No comments:
Post a Comment