Re: OS/2 2.11: TCP/IP over 384 kb/s satellite link

From: Frank Zeppenfeldt (Zeppenfeldt@eumetsat.de)
Date: Thu Jan 08 1998 - 13:33:29 EST


Dear Bettina,

Are there any reasons for you to suspect that one really needs to change parameters in the host stacks ? Are there not too much tcpretransmits , socket recv buffer of the receiving side is large enough etc... ?

Could you specify:

- the reason why you think that it is the stacks ?

OR

- advertised windows when the link is at maximum throughput ?
- queue behaviour of the routers ( packets drops ) ?
- any PPP frames coming in with a bad FCS ?
- number of tcp retransmits ?
- socket SEND and RECV sizes of both sink and source sockets ?
- quality of the link ?

Regards, Frank

------------------------------------------------------------------------------------------------------------------------
Frank Zeppenfeldt EUMETSAT
Ground Station Network Engineer http://www.eumetsat.de/
Zeppenfeldt@eumetsat.de Ground Segment Division
tel: +49 6151 807351 Am Kavalleriesand 31
fax: +49 6151 807426 64295 Darmstadt
     Germany

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