exchange set-adsite and set-adsitelink
http://technet.microsoft.com/en-us/library/bb123696.aspx
Use the Set-AdSiteLink cmdlet to assign an Exchange-specific cost to an Active Directory IP site link. You can also use this cmdlet to configure the maximum message size that can pass across an Active Directory IP site link.
http://www.fantasktek.com/System-Administration/Exchange-2010-Administration-Set-ADSite-Cmdlet.html
Use the Set-AdSite cmdlet to configure an Active Directory site as a hub site to override the default message routing behavior of a computer that has the Hub Transport server role installed.
http://technet.microsoft.com/en-us/library/bb123696.aspx
Use the Set-AdSiteLink cmdlet to assign an Exchange-specific cost to an Active Directory IP site link. You can also use this cmdlet to configure the maximum message size that can pass across an Active Directory IP site link.
http://www.fantasktek.com/System-Administration/Exchange-2010-Administration-Set-ADSite-Cmdlet.html
Use the Set-AdSite cmdlet to configure an Active Directory site as a hub site to override the default message routing behavior of a computer that has the Hub Transport server role installed.
