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From: creepysound on 1 Feb 2006 14:40
First i'm going to say somthing you probably don't want to hear. "I'm
not a MAC Guy". Thats why im posting here.

I could use help. Our company only has 9 MAC computers, which are used
for our ART Department employees only. We have a mixture of OS's for
them. 3 of them run on OSX 10.4 Tiger, the rest run on OSX 10.2.8. We
haven't had any networking issues before. Only starting about 3 weeks
ago, the mac users seem to lose partial network connection. They notice
it when they can't connect to eachothers stations. Its also random.
I.E...station 1 can connect to everyone except station 5, station 5 can
connect to everyone except station 2...and on and on. When this starts
to happen, if they pull up their network chooser to see if they can see
everyone in the workgroup, they will notice that they can't. And even
the users they DO see, they may not be able to connect to them. They
will just get Time Out Errors. Oddly as well, they found if they try to
connect directly by IP Address, they can do so. But not through the
chooser all the time anymore.
Once again this probably started recently, withen the last few weeks.
As far as i know, no new software or hardware changes have been made. I
have verified the network settings on each machine, and the network
router is new.At first they started to get disconnected from a Shared
External MAC Drive thats connected to one of the MAC Computers (The
system that has the external drive on it, isn't used by anyone, it just
hosts the hard drive). We have PC Users in our web department who also
access the External Drive on a regular basis, and they will not have
any trouble accessing this drive or get disconnected from it, even when
the MAC users at that very second are having trouble. So the problem
seems to be isolated the MACS only, and i'm not sure why. Once again
i'm not a MAC person so i don't know what i could be overlooking at
this point.

I hope i have provided enough information so far. I hope someone can
help me. Thank you for your time.

From: Richard Tomkins on 1 Feb 2006 16:12
Do you run your own Domain Name Server?
I have my own DNS, and if I do not make an entry in the network setting for
my local DNS in addition to my router as a DNS for getting to my ISP, then I
cannot easily connect to other machines.
You said you have a new router, which manufacture and model? Does this
connect to your ISP? Is this unit the DHCP Server? Do all you Mac's and PC's
use DHCP? The system sharing the disk drive should have a fixed IP Address
and hostname.

One quick thing to check is, on the Mac's with problems, what is their
defined hostname and what is their assigned hostname. The reason I ask, is
that I have discovered a bug in lookupd, which can make a mess of hostnames
and thus connectivity.

I define my Laptop as Laptop00, I recently discovered using hostname, that
it was getting the name, desktop00. At one time, my desktop00 system had the
IP address that my Mac now had and vice versa. I had powered off my router
and all my hardware and then brought everything back up again a day or so
later and of course, DHCP started to hand out addresses to first come first
served. lookupd in its cache remembered this and gave the Mac hostname
desktop00. I tried to flush the cache, but that did not work. I resolved my
problem by changing the range of IP addresses that my router issues from
(192.168.200.100 to 192.168.200.150) to (192.168.200.150 to
192.168.200.200). This forced lookupd to make new cache entries.
It's the new router that you said you had that brings this up from my
memory. I wish I knew if/when Apple would fix this.

rtt

<creepysound(a)gmail.com> wrote in message
news:1138822816.799141.59390(a)g43g2000cwa.googlegroups.com...
> First i'm going to say somthing you probably don't want to hear. "I'm
> not a MAC Guy". Thats why im posting here.
>
> I could use help. Our company only has 9 MAC computers, which are used
> for our ART Department employees only. We have a mixture of OS's for
> them. 3 of them run on OSX 10.4 Tiger, the rest run on OSX 10.2.8. We
> haven't had any networking issues before. Only starting about 3 weeks
> ago, the mac users seem to lose partial network connection. They notice
> it when they can't connect to eachothers stations. Its also random.
> I.E...station 1 can connect to everyone except station 5, station 5 can
> connect to everyone except station 2...and on and on. When this starts
> to happen, if they pull up their network chooser to see if they can see
> everyone in the workgroup, they will notice that they can't. And even
> the users they DO see, they may not be able to connect to them. They
> will just get Time Out Errors. Oddly as well, they found if they try to
> connect directly by IP Address, they can do so. But not through the
> chooser all the time anymore.
> Once again this probably started recently, withen the last few weeks.
> As far as i know, no new software or hardware changes have been made. I
> have verified the network settings on each machine, and the network
> router is new.At first they started to get disconnected from a Shared
> External MAC Drive thats connected to one of the MAC Computers (The
> system that has the external drive on it, isn't used by anyone, it just
> hosts the hard drive). We have PC Users in our web department who also
> access the External Drive on a regular basis, and they will not have
> any trouble accessing this drive or get disconnected from it, even when
> the MAC users at that very second are having trouble. So the problem
> seems to be isolated the MACS only, and i'm not sure why. Once again
> i'm not a MAC person so i don't know what i could be overlooking at
> this point.
>
> I hope i have provided enough information so far. I hope someone can
> help me. Thank you for your time.
>


From: creepysound on 6 Feb 2006 15:08
We don't use DHCP for our network, we use Static IP Addresses. We run a
Old Windows NT Based network/Domain (yep..some people still have it).
The Hostnames for each system is set up by station name....Example
Station1 Station2 Station3... up to Station8..

The switch is just a simple auto config NetGear Switch that connects up
one of our Windows NT domain boxes, all the MACs and a Small File
Server. The windows Computers wont seem to get any disconnections from
the shared network drive as the Mac users do. Its also so random that
all last week we didnt seem to have a problem. Thus far this week we
are ok as well, so it happens only once in a while. All Network
settings with the MACs has been checked...IP, Subnet, DNS etc etc and
is all intact. Its a strange Situation.

Thanks for your reply :)

From: Richard Tomkins on 6 Feb 2006 20:06
I have no more ideas, but you do say the network router is new. Time to take
a look in this area, I don't know what could be wrong, but, all things being
equal, if this is the change that has been made and that the problems arose
since this change, then this should be looked at.


<creepysound(a)gmail.com> wrote in message
news:1139256510.298345.121010(a)g44g2000cwa.googlegroups.com...
> We don't use DHCP for our network, we use Static IP Addresses. We run a
> Old Windows NT Based network/Domain (yep..some people still have it).
> The Hostnames for each system is set up by station name....Example
> Station1 Station2 Station3... up to Station8..
>
> The switch is just a simple auto config NetGear Switch that connects up
> one of our Windows NT domain boxes, all the MACs and a Small File
> Server. The windows Computers wont seem to get any disconnections from
> the shared network drive as the Mac users do. Its also so random that
> all last week we didnt seem to have a problem. Thus far this week we
> are ok as well, so it happens only once in a while. All Network
> settings with the MACs has been checked...IP, Subnet, DNS etc etc and
> is all intact. Its a strange Situation.
>
> Thanks for your reply :)
>


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