man@edsdrd.eds.com (Marc Nurmi) (08/14/90)
I've set up a dialup SLIP connection between two Suns running 4.1 SunOS, and it has been working fine. I have noticed, however, that the Sun that I'm dialed into is sending a bunch of packets (45, to be exact) over the SLIP link every 30 seconds. At first, I thought this was routing information generated by gated (which is running at both ends), but these packets are still generated, even if gated is brought down. Does anyone know what this information is, and what might be generating it??? Also, is there a tool like etherfind available for serial IP links? "netstat" gives me packet counts for information flowing across the SLIP link, but I was wondering if there was some way to look at this information. Oh, by the way, I'm not sure if it matters or not, but I'm running the SLIP compression routines (CSLIP), and am using a pair of Telebit T2500 modems in PEP mode. My main concern here is that these unexplained packets appear to be effecting the throughput of the SLIP link. Any assistance is greatly appreciated! -- Marc Nurmi - man@edsdrd.eds.com ... uunet!edsr!edsdrd!man
jc@minya.UUCP (John Chambers) (08/21/90)
> Oh, by the way, I'm not sure if it matters or not, but I'm running > the SLIP compression routines (CSLIP), and ... Hmmm... The folks around where I'm working have been discussing adding a compression feature to SLIP, and a bit of investigation turned up no evidence that anyone had done it. This passage makes it sound like it has been done. Does anyone know details? Is the source available for copying or purchasing (under or over the table ;-)? I've been thinking of subroutinizing the heart of compress as a way of getting the job done, though with the latest fuss over the legality of using compress, this may not be an option. Of course, I could always hack up a compress routine of my own; even a dumb one would have to give a measurable improvement over all the null and repeated bytes in the typical IP header. But getting it already done would be so much faster, y'know. -- Zippy-Says: I was there when ELMER FUDD met HAMLET on the MOON. Uucp: ...!{harvard.edu,ima.com,eddie.mit.edu,ora.com}!minya!jc (John Chambers) Home: 1-617-484-6393 Work: 1-508-952-3274