nanog mailing list archives
Re: Satellite latency
From: Hank Nussbacher <hank () att net il>
Date: Tue, 05 Mar 2002 08:42:22 +0200
New 12.2(8)T feature in Cisco IOS called TCP Windows Scaling: http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t8/tcpwslfn.htm Specifically made for satellite networks: ip tcp window-size 750000 -Hank
On Wed, Feb 27, 2002 at 11:01:04PM -0500, Mark Allman wrote: > > The receiver is the one that informs the sender how large of a > > window it can accept, so it can be practical for a subscriber > > installation. It wouldn't be a good idea to park a bunch of > > servers behind one of these links, but any receiving node that set > > its TCP receive window to 2x the byte/sec capacity of the link > > should see decent throughput. > > No, you need to set things on both sides. The sender has to buffer > data until it is ACKed in case it needs to retransmit. So, its > buffer needs to be as big as the advertised window or the sender > buffer will effectivly limit the advertised window. What do you need to set on the send side? If the receiver tells the sender "my acceptable window is 512k", the sender knows how much it has to buffer. -c
Current thread:
- Re: Satellite latency Hank Nussbacher (Mar 04)
- Re: Satellite latency Richard A Steenbergen (Mar 05)
- Re: Satellite latency Clayton Fiske (Mar 05)
- Re: Satellite latency Richard A Steenbergen (Mar 05)
- Re: Satellite latency Clayton Fiske (Mar 05)
- <Possible follow-ups>
- Re: Satellite latency Tony Rall (Mar 05)
- RE: Satellite latency David Luyer (Mar 05)
- Re: Satellite latency Joe Abley (Mar 05)
- RE: Satellite latency David Luyer (Mar 05)
- Re: Satellite latency Richard A Steenbergen (Mar 05)