rcsmith@anagld.UUCP (Ray Smith) (10/14/89)
The subject says it all. I would like to hear from anybody that has tried this. I was asked the question and have no idea if it is even possible. Thanks in advance, Ray -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Ray Smith | UUCP: {uunet,aplcen,netsys,sundc}!anagld!rcsmith Analytics, Inc. | ARPA: RCSmith@DOCKMASTER.NCSC.MIL or Suite 200 | anagld!rcsmith@uunet.uu.net (Preferred) 9891 Broken Land Parkway | You can also try: rcsmith@analytics.com Columbia, MD 21046 | Voice: (301) 381-4300 Fax: (301) 381-5173 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
dyer@spdcc.COM (Steve Dyer) (10/15/89)
In article <731@anagld.UUCP> rcsmith@analytics.com (Ray Smith) writes: >The subject says it all. I would like to hear from anybody that has tried >this. I was asked the question and have no idea if it is even possible. Well, sure it's possible on most NFS implementations where the network supports SLIP, but it's not very pleasant. Be sure that UDP checksumming is turned on in your kernel (for most BSD-derived systems, that means the variable 'udpcksum' should be set to 1.) Because the SLIP link level has no checksum, line noise can easily corrupt a packet (and over an NFS mount, corrupt your files.) I'd also adjust your rsize and wsize mount parameters to something smallish. I have a 19.2kb SLIP line as my connection to the Internet, and have occasionally mounted file systems located several gateways away. It works. I don't use it routinely for read/write work. I find it most useful for mounting read-only filesystems which have files I occasionally refer to by name (Athena's 'xpix' bitmap locker, etc.) -- Steve Dyer dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer dyer@arktouros.mit.edu, dyer@hstbme.mit.edu
vjs@rhyolite.wpd.sgi.com (Vernon Schryver) (10/15/89)
In article <731@anagld.UUCP>, rcsmith@anagld.UUCP (Ray Smith) writes: > > ...[is NFS possible over SLIP]... Yes, provided you either (1) get NFS clients and servers that turn on UDP checksums or (2) use a SLIP varient that does end-to-end checksumming (or equivalent). However, it's not pretty. Think about the sizes of "small" NFS traffic like attribute requests. If you value your lunch, do not think about distant hosts doing 8KB UDP's without knowing there is a SLIP 9.6Kb gateway in the route. It stops being funny at <9.6. Vernon Schryver Silicon Graphics vjs@sgi.com
craig@com2serv.C2S.MN.ORG (Craig S. Wilson) (10/16/89)
In article <731@anagld.UUCP> rcsmith@analytics.com (Ray Smith) writes: >The subject says it all. I would like to hear from anybody that has tried >this. I was asked the question and have no idea if it is even possible. >Thanks in advance, >Ray >-- We have set up a Convergent S/80 using a direct SLIP connection to another S/80 which is on our network. We have been able to mount directories both ways. We've mounted the SLIP'ed S/80's directories on other network computers, including PCs. We also can mount other computer's directories (SUN 3/260, 3/280, 2/60) on the SLIP'ed S/80. We have had some problem connecting the S/80 to a SUN via SLIP because of some fundamental philosphical differences in the implementations. It may be possible, but we have taken the path of least resistance. The performance is about what we could hope for, given the 9600 bps rate of the serial connection. The Convergent S/80 is a 16.67 MHz 68020 with 2MB memory, SCSI bus, 8 RS-232 ports and one printer port on a single board. The ethernet controller for the S/80 is a daughterboard which is a SCSI device. The NFS and SLIP implementations are pretty good and are fairly easy to configure, once you've read the documentation. We also experimented with NFS over dial-up SLIP. We were trying with Telebit TB1000, though, and performance was not good. It could be done, but "dumb", fast modems are required to get any kind of performance. /craig Craig S. Wilson | Democracy |{amdahl|hpda}!bungia!com50!craig Com Squared Systems, Inc | is not a |craig@c2s.mn.org 2520 Pilot Knob Road | spectator |(612) 452-9522 voice Mendota Heights MN 55120 | sport! |(612) 452-3607 fax