Site replication problem due to DNS Lookup failure.

Archived from groups: microsoft.public.win2000.dns (More info?)

Beezo wrote:
> Hi, Urgent help required.
>
> I have multiple sites connected with WAN links. All sites are
> functioning correctly besides one. Changes on Site a will be
> replicated to Site B however changes in site B will not replicated to
> Site A. Repmon comes up with the DNS Lookup failure. I found that on
> Site A in DNS under the Foward lookup zones (Sites), Site B is not
> apparent but on Site B all the sites are apparent. How do I get the
> sites re-added to DNS. I understand that this should have been done
> aytomatically through sites and services.
>
> Thank you in advance.

Are the zone AD Integrated? Is there any firewall rules blocking traffic one
way or the other? Is there a NAT device in the way?

Nothing to re-add. It's all automatic, if functioning properly.

--
Regards,
Ace

Please direct all replies ONLY to the Microsoft public newsgroups
so all can benefit.

This posting is provided "AS-IS" with no warranties or guarantees
and confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft Windows MVP - Windows Server - Directory Services

Paramount: What's up with taking Enterprise off the air??
Infinite Diversities in Infinite Combinations.
=================================

Archived from groups: microsoft.public.win2000.dns (More info?)

Hi Ace

The Zones are AD Integrated. No Firewalls or any other devices on path. I do
have a packet shaper installed but I have elimanated that as a possiblilty by
removing it entirely from the path. No changes had been made on the server
prior to the errors, Is it possible that DNS or AD as a whole could have
become corrupt on unrepairable.

I have manually created all the SRV entries on Site A but still no luck,
Please let me know if you have any other sugesstions,

Thanks again for you assistance.

"Ace Fekay [MVP]" wrote:

> Beezo wrote:
> > Hi, Urgent help required.
> >
> > I have multiple sites connected with WAN links. All sites are
> > functioning correctly besides one. Changes on Site a will be
> > replicated to Site B however changes in site B will not replicated to
> > Site A. Repmon comes up with the DNS Lookup failure. I found that on
> > Site A in DNS under the Foward lookup zones (Sites), Site B is not
> > apparent but on Site B all the sites are apparent. How do I get the
> > sites re-added to DNS. I understand that this should have been done
> > aytomatically through sites and services.
> >
> > Thank you in advance.
>
> Are the zone AD Integrated? Is there any firewall rules blocking traffic one
> way or the other? Is there a NAT device in the way?
>
> Nothing to re-add. It's all automatic, if functioning properly.
>
> --
> Regards,
> Ace
>
> Please direct all replies ONLY to the Microsoft public newsgroups
> so all can benefit.
>
> This posting is provided "AS-IS" with no warranties or guarantees
> and confers no rights.
>
> Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
> Microsoft Windows MVP - Windows Server - Directory Services
>
> Paramount: What's up with taking Enterprise off the air??
> Infinite Diversities in Infinite Combinations.
> =================================
>
>
>

Archived from groups: microsoft.public.win2000.dns (More info?)

Beezo wrote:
> Hi Ace
>
> The Zones are AD Integrated. No Firewalls or any other devices on
> path. I do have a packet shaper installed but I have elimanated that
> as a possiblilty by removing it entirely from the path. No changes
> had been made on the server prior to the errors, Is it possible that
> DNS or AD as a whole could have become corrupt on unrepairable.
>
> I have manually created all the SRV entries on Site A but still no
> luck, Please let me know if you have any other sugesstions,
>
> Thanks again for you assistance.
>

Ok... Let's see, the last time I saw something like this happen, my clients
upgraded their VPN boxes with a new firmware that forced the MTU to 1492
which killed LDAP, Kerberos and RPC communication (protocols required by
AD), but they could ping by name and IP all day long without probs. It took
me 2 days to figure that one out. How about your VPN boxes? What's different
or changed in there? Any MTU changes? Is there an ADSL connection anywhere?
ADSL forces a lower MTU since 8 bytes are needed for PPPoE, which causes
major issues with AD.

This is all assuming there is nothing wrong with your configuration on all
the servers. Just to make sure, can you post an ipconfig /all from all of
your servers please? I just want to insure your infrastructure
configuration.

Thanks.

Ace