Hi- I had 2 Win2k3 DC's (one with Exchange 2003 - inherited this way) and I installed Exchange 2010 not too long ago, and I did not Suppress the Link State. Is this something that I need to do? In EMC, on my Win2k3, this is what I see: -Administrative Groups -Exchange Administrative Group (FYDIBOHF....) +Servers -Routing Groups -Exchange Routing Group (DWBGZM....) -Connectors -OUROGRANIZATION_SEND_CONNECTOR (smtp connector) -Members (our Exchange 2010 server) -Organizationname -(Routing grup1) +Servers +System Policies -Routing Groups -Organizationname -Connectors -Internet Mail SMTP Connector ((name of my Exchange 2003 server here)) -Members (our Exchange 2003 server) Note: The upper section was what was created when Exchange 2010 was installed. So will it be ok to leave this way, or do I need to Suppress the Link State? And would I need to do anything with the Suppression of the Link State, if i don't need to do anything right now, once I am ready to decommission the Exchange 2003 server? I am learning more about this so I hope I can answer any questions you guys have, if any. Thanks in advanced.

If you have only one Exchange 2003 and one 2010 you can uninstall Exchange 2003 server without modifying Link State Protocol. It should be done if you have more Exchange 2003 servers, but if you are ready to remove it, you needn'tRegards, Konrad Sagala, MCT, MCSE+M, MCITP: Exchange 2007/2010

If you have only one Exchange 2003 and one 2010 you can uninstall Exchange 2003 server without modifying Link State Protocol. It should be done if you have more Exchange 2003 servers, but if you are ready to remove it, you needn'tRegards, Konrad Sagala, MCT, MCSE+M, MCITP: Exchange 2007/2010

Hi, thanks for the quick reply. So this Suppression of the Link State only applies if you have more than one 2003 Exchange servers? What If I install another Exchange 2010 server? while the Exchange 2003 server is still running (but Mailboxes on Exchange 2010 server). Will I need to do anything with this Suppression of the Link State? I didn't quite get the last sentence by saying that, " but if you are ready to remove it, you needn't". Can you clarify this for me? Are you saying I don't need it or I need it? Thanks

Hope this will help The purpose of this procedure is to make sure that routing loops can't occur. Exchange 2010 doesn't use a link state routing table and doesn't support relay of link state information. If you don't suppress minor link state updates, routing loops may occur. For more information about how routing occurs in an Exchange organization that includes Exchange 2010 servers and Exchange 2003 servers, see Upgrade from Exchange 2003 Transport. http://technet.microsoft.com/en-us/library/aa996728.aspx Where Technology Meets Talent

Okay, I've seen the website and it does say to suppress minor link state updates, though not sure why some people are posting to leave it if only one 2003 Exchange server. Maybe I'm misunderstanding something here... Anyway, if I do the suppression (edit the registry) it won't affect anything as to the emails coming in or going out since most of the Mailboxes are on the Exchange 2010 server (except SMTP (My Exchange server name--{D62A70...}), System Attendant, and System Mailbox {D62A70...}) mailboxes left on Exchange 2003 server)? By the way, the three mailboxes left in my Exchange 2003, mentioned above (which don't appear on my Exchange 2010 server Mailbox section) are still there. Should I do anything to these for now, or just leave them while the Exchange 2003 is still up and running? Will I need to do anything to these before decommissioning my Exchange 2003 server? I'm still learning more about this, so I might sound like I don't know what i'm talking about, but I appreciate this help.

Then you may need to follow the steps to decommission an Exchange 2003. Hope this article will help you. http://www.msexchange.org/tutorials/removing-first-exchange-2003-server-part1.html The people have suggested to remove because when you are done moving all the mailboxes to Exchange 2010 then there is no routing involved between Exchange 2003 and Exchange 2010. Usually you need setup a connector if you want to co-exist. To get the best result you should always follow the best practices to avoid any issue to get full support from Microsoft. Those three account could be the system accounts, i guess. Hope that helps Cheers Where Technology Meets Talent

Hi- Question: will changing this registry setting harm the email flow between Exchange 2003 or Exchange 2010? I know it helps it if I have the Exchange 2010 or more than one routing connectors in Exchange 2003 so there's no routing loop problems, but just wondering about this registry settings and if it harms anything else because I might not need it, but it seems like a good idea to just suppress the Link State just in case I add more connectors later on Exchange 2003 later on.

Hi- Question: will changing this registry setting harm the email flow between Exchange 2003 or Exchange 2010? I know it helps it if I have the Exchange 2010 or more than one routing connectors in Exchange 2003 so there's no routing loop problems, but just wondering about this registry settings and if it harms anything else because I might not need it, but it seems like a good idea to just suppress the Link State just in case I add more connectors later on Exchange 2003 later on.

Hi- Question: will changing this registry setting harm the email flow between Exchange 2003 or Exchange 2010? I know it helps it if I have the Exchange 2010 or more than one routing connectors in Exchange 2003 so there's no routing loop problems, but just wondering about this registry settings and if it harms anything else because I might not need it, but it seems like a good idea to just suppress the Link State just in case I add more connectors later on Exchange 2003 later on. You only need to suppress it if you have more than one 2003 routing group, not more than one connector. It doesnt "hurt" anything if its set, just changes the routing behavior to be more "2010 like"

I'll probably just do this change in case I add more routing groups later down the road since it won't affect anything. Thanks.

I'll probably just do this change in case I add more routing groups later down the road since it won't affect anything. Thanks.