Best of the Newsgroups: nic ftp slow 10/100 auto negotiate


What is this stuff?

If this isn't exactly what you wanted, please try our Search (there's a LOT of techy and non-techy stuff here about Linux, Unix, Mac OS X and just computers in general!):



From: Jeff Liebermann <jeffl@comix.santa-cruz.ca.us>
Subject: Re: FTP slow xfer SCO OpenServer 5.06?
Date: Sun, 25 May 2003 21:29:53 -0700 References: <8594ba46.0305251125.7c49861d@posting.google.com>


Hate these ads?



On 25 May 2003 12:25:05 -0700, meba@wi.rr.com (Perry Whelan) wrote:



>So, this is a bit odd.  I've got 2 SCO OpenServer 5.06 servers, both
>are fully licensed & registerd. They're attached to a 100Mbps switch &
>have 100Mpbs NIC's.  Using the stock ftp server/client to xfer files,
>a ~500MB file xfer'd in ~2hr <-- I'm not exagerating!  Even 5GB file
>ought not take that long...














Did ftp performacne work correctly BEFORE you upgraded to 3.2v5.0.6?



The first step to solving any problem is to assign the blame.  Plug a
known working 3rd computah into the switch and try file transfers
to/from both of the two OSR5 machines.  Perhaps *ONE* of the OSR5
servers is screwing up, not both.



If your unspecified NIC's are 3Scum 3C905 cards, some of the early
versions before Rev C had the nasty habit of not successfully NWAY
negotiating the speed with some switches.  The fix is to tweak the
space.c file for the 3C905 to NOT auto-negotiate and to use a suitable
speed and  protocol.  I suggest 100baseTX half-duplex.  If that works,
try full-duplex.  Be sure to unplug the cable from the switch when
changeing speeds and full/half duplex to reset the port.



Are you sure that the packets are actually going directly between the
two machines?  Run:
  traceroute other_machine_ip
and
  netstat -rn
to be sure.  I got fooled a while back when RIP setup a bizarre route
out to a remote router.  It actually worked, but was dismally slow.
If you're not using RIP, kill the routed daemon and comment it out of
/etc/tcp to prevent it from restarting.  Oh yeah, try:
  ping other_machine_ip
If it's slower than a snail, something odd it going on in between
machines.  I have a Netgear FS-508 the periodically goes insane where
the only symptoms are extremely long delays through the switch.




-- 
Jeff Liebermann  150 Felker St #D  Santa Cruz CA 95060
(831)421-6491 pgr  (831)336-2558 home
http://www.LearnByDestroying.com   AE6KS
jeffl@comix.santa-cruz.ca.us   jeffl@cruzio.com














Enter your email address for automatic notification of new posts here
(be sure to whitelist 'feedburner.com' if you use spam filtering)

Or use any RSS reader

Delivered by FeedBurner





Views for this page
Today This Week This Month This Year  Overall
314631,135 4,386

/Bofcusm/2096.html copyright 1997-2004 (various authors) All Rights Reserved

Have you tried Searching this site?

Unix/Linux/Mac OS X support by phone, email or on-site: Support Rates

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more. We appreciate comments and article submissions.

Publishing your articles here

More:
       - Newsgroup




Unix/Linux Consultants

Your ad here - $48.00 yearly!

UBB Computer Services Support for Openserver, Unixware and Linux. Windows integration with Unix/Linux servers. Hardware, Backup and Networking issues. Located near Sacramento CA, we provide onsite support throughout Northern CA and Nationwide via remote access. We are a SCO Authorized Partner and a Microlite BackupEdge Certified Reseller.


http://www.vss3.com SCO/Caldera OpenServer, Unixware & Linux. Tarantella & Non-stop Clustering


http://www.breakthru.com.au SCO (Openserver and Unixware), Unix, Solaris and Linux Consulting services including: Secure Networking Solutions; Linux based Firewalls; Backup Solutions; Secure Home to Office Network Setup; Phone, Remote and On-Site Support available - Satisfaction Guaranteed!



Twitter
  • Nov 18 20:41
    I'll be out all day Wednesday the 19th, hard to reach even by phone. Leave a message and have patience.
  • Nov 18 10:07
    What am I doing? Not doing what I WANT to be doing! Oh, well, in every life a little work must fall..




card_image








Change Congress


Related Posts