VERY SLOW transfer speed on LAN

[lilcam]

Here's the setting:

Fiber connection to these two computers (the PDC and a dummy workstation we're trying to GHOST).
The LAN is a 100Mbps and our internet connection is a T1 connection.

So, I tried copying a 100 MB file from the workstation to the PDC and it took FOREVER. I think it froze
along the way and we had to shut down the workstation. This happened a couple of times so I downloaded
some shareware tool off the net and found out the connection speed was less than 1Mbps!!!! There's hardly
any network activity on the LAN since school hasnt started yet so it's just the PDC and that one workstation
being used.

I switched the NIC and checked the protocols but found nothing out of the ordinary. Ping times to the router,
PDC, and switch were all fine. Connection to the Internet was fine, but it seems transferring files internally
is very very slow.

Any clue as to why?

 

[jimbopalmer]

look for hints that one end of a connection is full duplex and the other end is half. They need to match one way or the other.

if either end is NOT set to autonegotiate, neither end can be.

hope this helps. I tried to remain child-like, all I acheived was childish.

 

[wolf2x]

Double-check the ports that the two computers are plugged into.

 

[pansophic]

How is your DNS configuration? Does the problem exist if you use IP addresses rather than names to establish the connection?

Connections are significantly slower when a system must search for a secondary or tertiary DNS server, or when the hostname lookup fails.

You might want to run a sniffer on the network while this is happening to see if there is something obviously amiss. You can get Ethereal and WinPCAP for free.

pansophic

 

[jgercken]

How are you xmitting? NetBIOS(SMB) or FTP? Try another method. Same subnet? Check your netmasks, default gateway, etc (usual stuff). Two-fiber connections are 99.9999% full duplex since there's no possibility for a collision. Ping the other side, what's the response time? Is only 1 out of n pings making it? (bad routing) Do a trace route. What path is it taking? Ping the intermediate devices and look at the response times. If it is a high delay your TCP window may be halting xmits until the ack is recieved. There are many many possibilities at this point.

-Jeff
----------------------------------------
Wassabi Pop Tarts! Write Kellogs today!

 

[champ007]

Helo ,

we have two lan cisco 4006 switches .one is at ground floor and other at 1st floor.there is two subnet created i.e. 192.193.237.1(1st floor) & 192.193.243.1(ground floor) .we have one file server at 1st floor but the cable is extended from ground floor segment and all the data should on this server.when user access any microsoft office related document from ground floor they will get responce time 150ms to 350ms.as i was ping from one of the ground floor machine.when i was ping from 1st floor it should be <10ms.
the switch port should be set for 100/full duplex on both switches.Users from the ground floor segment are accessing the MS ACess database from from first floor server .then whats problem ..pls any idea on this to solve my problem as this is very urgent.
waiting for your responce