> > From: Ned Freed <ned.freed@xxxxxxxxxxx> > Let me make sure I understand you here: > > IMAP4 has the characteristic that you often have a huge number of > > incoming connections, only a few of which are active at any given time. > > Designing servers to accomodate huge numbers of connections is a bit > > tricky, but workable: ... > > The 65536 limit, OTOH, has to be dealt with by using multiple server IP > > addresses, which in turn usually require multiple interfaces ... > > ... that doesn't mean nobody is hitting the 65536 limit imposed by > > source port numbers. They are, it causes problems > You're saying that there are servers which have close to (or more) than 65K > connections to a *single client IP address* (i.e. it may be a NAT, with a > number of hosts behind it)? (If a server is talking to a number of different > client IP addresses, it can have up to 65K connections to *each*.) Yes, that is exactly what I am saying (now for the third time). Ned _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf