site link transitivity

[Darren]

I am a bit puzzled on the concept of site link transitivity.

My site links maps to my WAN links as a result I am using Hub and Spoke
site link topology . I currently have 3 sites, for simplicity lets assume
they are (A,B and C). My Hub link is C .. My links are as follows -- A
connect to C and B connects to C , In addition I discovered that under the
properties of IP folder (site link bridge) is checked. My question is should
site link bridge be un-checked? I am assuming site link transitivity is not
applicable in my scenario since I don't have a WAN link connection from site
A to B ..

TIA
Darren

 

[Vincent Xu [MSFT]]

Hi,

-- I am assuming site link transitivity is not
--applicable in my scenario since I don't have a WAN link connection from
site
--A to B ..

Yes, your thought is correct.A site link bridge enables transitivity
between site links. Each site link in a bridge must have a site in common
with another site link in the bridge. The Knowledge Consistency Checker
(KCC) uses the information on each site link to compute the cost of
replication between sites in one site link and sites in the other site
links of the bridge. Without the presence of a common site between site
links, the KCC also cannot establish direct connections between domain
controllers in the sites that are connected by the same site link bridge.

Check following article:

<http://technet2.microsoft.com/WindowsServer/en/library/5d05f4ed-a9ec-4dac-b
9a8-8527b6c8e0da1033.mspx?mfr=true>

Hope this helps.


Best regards,

Vincent Xu
Microsoft Online Partner Support

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--------------------

 

[Darren]

Excellent !.. Thank you

Hi,

-- I am assuming site link transitivity is not
--applicable in my scenario since I don't have a WAN link connection from
site
--A to B ..

Yes, your thought is correct.A site link bridge enables transitivity
between site links. Each site link in a bridge must have a site in common
with another site link in the bridge. The Knowledge Consistency Checker
(KCC) uses the information on each site link to compute the cost of
replication between sites in one site link and sites in the other site
links of the bridge. Without the presence of a common site between site
links, the KCC also cannot establish direct connections between domain
controllers in the sites that are connected by the same site link bridge.

Check following article:

<http://technet2.microsoft.com/WindowsServer/en/library/5d05f4ed-a9ec-4dac-b
9a8-8527b6c8e0da1033.mspx?mfr=true>

Hope this helps.


Best regards,

Vincent Xu
Microsoft Online Partner Support

======================================================
Get Secure! - www.microsoft.com/security
======================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others
may learn and benefit from this issue.
======================================================
This posting is provided "AS IS" with no warranties,and confers no rights.
======================================================



--------------------

 

[Brian Desmond [MVP]]

Darren-

Can A and B communicate (via C)? I turn off the bridging of all site links
when I have a hub/spoke situation where spokes cannot communicate with each
other.

--
Thanks,
Brian Desmond
Windows Server MVP - Directory Services

www.briandesmond.com

 

[Vincent Xu [MSFT]]

Hi,

Glad to provide assistance.


Best regards,

Vincent Xu
Microsoft Online Partner Support

======================================================
Get Secure! - www.microsoft.com/security
======================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others
may learn and benefit from this issue.
======================================================
This posting is provided "AS IS" with no warranties,and confers no rights.
======================================================



--------------------