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AD Site question....

Posted on 2006-07-04
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Last Modified: 2010-03-18
Dear all:

I have one domain three sites,
siteA : subnet 172.1.1.0
siteB : subnet 172.1.2.0
siteC : subnet 172.1.3.0

siteA can ping siteB and siteC,but siteB can't ping siteC..

now i found envent log say:
event ID:1865
source :NTDS KCC

when i just have two site that's fine,but when the third site created,the error appear:
anyone know how to create three site correctlly?

thanks

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Question by:darkeryu
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Expert Comment

by:mass2612
ID: 17040635
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Author Comment

by:darkeryu
ID: 17051704
Hi:

the site B can't ping the siteC,
how do i set it up ?

thanks
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mass2612 earned 500 total points
ID: 17054424
Since your network is not fully routed some KCC errors are fairly normal. i.e. not all sites have a direct link between all other sites.

If you want to create a site link bridge: -

To create a site link bridge
1.  Open Active Directory Sites and Services.
 
2.  In the console tree, right-click the inter-site transport folder for which you want to create a new site link bridge, and then click New Site Link Bridge.

Where?

• Active Directory Sites and Services/Sites/Inter-Site Transports/intersite transport for which you want to create a new site link bridge
 
 
3.  In Name, type a name for the site link bridge.
 
4.  Click two or more site links to be bridged, and then click Add.
 
http://technet2.microsoft.com/WindowsServer/en/Library/99229add-3c6d-4a85-b3c7-a4743b8fb2f81033.mspx?mfr=true
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Expert Comment

by:mass2612
ID: 17054540
Here some more info from the MS 70-294 training kit: -

"A site link bridge connects two or more site links in a transport where transitivity has been disabled in order to create a transitive and logical link between two sites that do not have an explicit site link. For example, in Figure 5-1, site link Ber-Lu connects the Bern and Lucerne sites. Site link Lu-Zur connects the Lucerne and Zurich sites. Site link bridge Ber-Lu-Zur connects site links Ber-Lu and Lu-Zur."

                 Bern site -------------------------------- Zurich site
                       |        Ber-Lu-Zur Site link Bridge       |
Ber-Lu site link  |                                                     | Zur-Lu site link
                       |                                                     |
                         |                                                 |
                             |---- Lucerne site ------------- |

"Because site links are transitive by default, it is seldom necessary to create site link bridges. In other words, if site link transitivity is enabled, then manually creating a site link bridge is redundant and has no effect. However, if site link transitivity is disabled, you need to manually create a site link bridge if a transitive link is required to handle your organization’s replication strategy."
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by:darkeryu
ID: 17060079
thanks

I will try it.
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