Re: FRS Only replicates on inbound connection, no changes go out.

Ace Fekay [MVP] wrote:
In news:V%yOe.70894$az4.44918@xxxxxxxxxxxxxxxxxxxxxx,
Mike Drechsler - SPAM PROTECTED EMAIL <mike-newsgroup@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> made this post, which I then commented about below:

1500 is not the MTU of TCP/IP.  It is the MTU of Ethernet.  The IP
protocol can go higher than this on a physical interface that supports
larger packet sizes such as gigabit ethernet.  It can also go lower on
interfaces like ATM that have a smaller frame size.  Ethernet has just
become so common that you might assume that 1500 is somehow tied to
basic TCP/IP specifications.   LDAP will work just fine with MTU
values lower than 1500 unless you are thinking about the problem
experienced with Windows 2003 sp1 or the MS05-019 patch resolved in a
hotfix referred to in KB article 898060?  This only applies to the
2003 environment under those specific conditions mentioned in the KB
article. We are using Windows 2000 here so will not be subject to
that particular bug.  As long as the MTU is larger than the minimum
segment size but equal or smaller than the actual MTU of the network
path, things will work.


I was jus trying to point out issues with MTUs and domain communication. If this is not the cause, we need to look elsewhere.


The ADSL connection is routed. The ISP is Telus, specifically it is
their advanced communications division (TAC) or whatever they now call
it. The product is called managed business internet. It is separate
from their consumer service which uses DHCP for address assignment. In either case of managed or consumer service the MTU available to the
customer is 1500 on the ethernet network interface on the modems. The
internal data transmission structure at Telus uses ATM to encapsulate
the modem traffic to be delivered to an aggregation point where it
enters their Internet backbone. The ATM encapsulation is transparent
to the ethernet link and it does not affect the MTU.


That's interesting. I haven't heard of a routed ADSL connection and not using PPPoE up until now.



Now, while MTU may not be a problem here, you may have gotten me
looking towards something that may be a problem.  While trying to
verify that I could do LDAP queries to the remote server from both
sides of the link I had troubles using AD Users and Computers from
the remote server when I tried to connect to the mainserver domain
controller by right clicking on the domain name and choosing "Connect
to domain controller...".  The error message that came up is
something about RPC.  I tried it a second time and this time it
worked.  It has worked every time since the initial RPC error.  I
started digging around and found when I ran windows update and showed
the hidden updates, that there is an update available for the network
card drivers on the main machine.  Normally I would think it's a shot
in the dark but I installed the newest version and that's where I am
now.  I can't run anymore tests on it right now but I will follow up
a bit later on my current status.


Keep us informed. Maybe you can try some packet sniffing to see exactly what's going on.

Ace 

Still not working. Darn.

Perhaps I will go grab the other server and bring it on site.

--
WARNING!  Email address has been altered for spam resistance.
Please remove the -deletethispart-. section before replying directly.
Mike Drechsler (mike-newsgroup@xxxxxxxxxxxxxxxxxxxxxxxxxxxx)
.

Relevant Pages

  • Re: Panic in 6.2-PRERELEASE with bge on amd64
    ... interface is enough to completely panic the driver and then the kernel, ... I added some sysctls and found it annoying to have to do down/up ... Similarly for the mtu ioctl. ... As this was connected to a gigE switch with mtu left at 1500 I supposed ...
    (freebsd-stable)
  • Re: 6.2 mtu now limits size of incomming packet
    ... Incoming interface must have mtu set to the same mtu as all other hosts on the same L2 network. ... Thus the router can accept the incoming packet but may drop and notify on a frame that is too large to exit the outgoing interface. ...
    (freebsd-net)
  • Re: Cant send attachments with Outlook Express / Hotmail
    ... How do I tell which DriverDesc is Ethernet? ... additional MTU values, try 576 and then increase the number to 600. ... Hotmail.com, I was unable to sign-in to Hotmail via IE as "cookies are ...
    (microsoft.public.windows.inetexplorer.ie6_outlookexpress)
  • Re: Problem with large pings with dont fragment set
    ... > pings with the DF bit set over a GRE tunnel. ... I don't know about GRE tunnels but they very likely add ... > the MTU on the tunnel interface is 552. ...
    (comp.os.linux.networking)
  • Re: Dropped packets via ISR
    ... I also used ping plotter... ... Tried changing from full duplex to half duplex to auto and that did ... "1) Interface MTU at 1500 is fine. ...
    (comp.dcom.sys.cisco)