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Re: [lwip-users] Pbuf pool size and network interface
From: |
Bill Auerbach |
Subject: |
Re: [lwip-users] Pbuf pool size and network interface |
Date: |
Mon, 27 Jun 2011 08:56:53 -0400 |
>Is such a small MSS valid? All IP networks are supposed to guarantee
>that they can receive a segment of 576 bytes without fragmenting, so
>assuming the default header sizes that would make a TCP segment of 536
>bytes. While setting it smaller might be OK in most situations, you
>might find that this causes interoperability problems with other stacks,
>as they could ignore your MSS request and just use 536 instead.
As there is a minimum (i.e., if an RFC states that there is one) it would be
a good init.c compile-time check.
Bill