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- From: stevewi@hpspdla.spd.HP.COM (Steve Witten)
- Date: Tue, 17 Nov 1992 00:07:17 GMT
- Subject: Re: MTU on MacSLIP?/Transmission speed
- Message-ID: <21460012@hpspdla.spd.HP.COM>
- Organization: HP Stanford Park - Palo Alto, CA
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!spool.mu.edu!darwin.sura.net!wupost!sdd.hp.com!hpscit.sc.hp.com!scd.hp.com!hpscdm!hplextra!hpl-opus!hpspdla!stevewi
- Newsgroups: comp.sys.mac.comm
- References: <1992Nov16.154321.7910@news.acns.nwu.edu>
- Lines: 37
-
- >I'm switching over from Microphone II to MacSLIP and have two questions:
- >1) MacSLIP has something called MTU which has a default setting of 1500.
- >What is MTU, and what should the setting be?
- >
-
- MTU stands for "Media Transfer Unit". This is essentially the MAXIMUM frame
- size for the medium you are using. For Ethernet, the MTU is 1514
- octets (or 1518 if you count the Frame Check Sequence as part of the
- frame).
-
- I don't know what a good MTU is for MacSLIP. On our HP9000's, I
- believe it is set to 1006.
-
- >2) I'm using a 9600 V.32/V.42 bis modem, with what I think is the correct
- >initialization code (it works properly on Microphone), but when I do file
- >transfer such as FTP with Fetch, the maximum transfer rate is only around
- >900 bps. I have the computer speed set at 38400 with MacSLIP. With
- >Microphone I'm able to transfer up to 2200 bps. Any ideas?
- >
-
- Sorry, I can't help with this one.
-
- >If possible, please answer by e-mail.
- >Thanks in advance for your help!
- >
- >-Rob
- >--
- >%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- >Robert M. Golub, M.D. Division of General Internal Medicine
- >222 E. Superior Northwestern University Medical School
- >Chicago, IL 60611 E-mail: golub@nwu.edu Voice: (312) 908-8630
-
- ===============================================================================
- Steve Witten stevewi%hpspd@hplabs.hp.com
- Network Test Division ...!hplabs!hpspd!stevewi
- Hewlett-Packard Co. stevewi@hpspd.spd.hp.com
-
-