Ascend Archive
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Re: (ASCEND) Optimal MTU & RWIN Settings?
>On Fri, May 22, 1998 at 02:04:21PM -0400, Wes Parker wrote:
>> One of our customers who is heavily into gaming, is >>interested in having the most optimal dialup K56flex >>connection possible to our Max4004. He had questions >>about what MTU and RWIN settings we use on our Max. I >>believe the default MTU is set for 1500, not sure >>about RWIN.
>Max default MTU is 1524. RWIN probably stands for the >TCP Receive Window Size the client is announcing to >bypass TCP slow start and convince the peer to send >segments faster and with less acking expected to >optimize TCP download efficiency.
On a highly tangental note, I'm ran across an interesting subject thread in the firewalls mailing list. The subject of the thread concerned highly restrictive access lists/packet filters on PoP routers. As already stated, problems, real or percieved, can result from the type of traffic AND factors beyond your control. Obviously the average win95 dial-up customer is not running mail service, but...
matthew green matthew green <mrg@eterna.com.au> in firewall-wizards@nfr.net wrote:
>i *used to* run my ppp MTU at something considerably >lower than 1500 but i've raised it back to 1500 because >there were too many sites with broken firewalls that >were attempting to talk to my mail server but were >*not* receiving the ICMP need frag error my hosts were
>sending, and thus the mail was *never* getting through.
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