AD subnets have nothing to do with how the WAN is actually routed. All they do is link an IP address to a site. If you don't have a blanket subnet as a last resort your DCs start filling their event logs with events about how clients are connecting from unknown subnets.
So what you do is you take your hub datacenter(s) and associate large supernets with the site objects (as big as 10.0.0.0/8 if appropriate). Then you associate the actual subnets with the sites where they're physically located. Thanks, Brian Desmond [EMAIL PROTECTED] c - 312.731.3132 > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:ActiveDir- > [EMAIL PROTECTED] On Behalf Of Mathieu CHATEAU > Sent: Saturday, January 27, 2007 1:34 PM > To: ActiveDir@mail.activedir.org > Subject: Re: [ActiveDir] Overlapping AD Subnet Boundaries > > i don't agree. > the /24 is included in the /16. > You won't have layer 3 routing between the two site, at least from the > primary to the secondary. Even if it will work from a routing point of > view > from the secondary to the primary. > > what's the point ? > > Regards, > Mathieu CHATEAU > http://lordoftheping.blogspot.com > > > ----- Original Message ----- > From: "Brian Desmond" <[EMAIL PROTECTED]> > To: <ActiveDir@mail.activedir.org> > Sent: Saturday, January 27, 2007 6:58 PM > Subject: RE: [ActiveDir] Overlapping AD Subnet Boundaries > > > OK well you don't need a layer 2 link to do what the OP wants... > > Thanks, > Brian Desmond > [EMAIL PROTECTED] > > c - 312.731.3132 > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:ActiveDir- > > [EMAIL PROTECTED] On Behalf Of Mathieu CHATEAU > > Sent: Saturday, January 27, 2007 12:53 PM > > To: ActiveDir@mail.activedir.org > > Subject: Re: [ActiveDir] Overlapping AD Subnet Boundaries > > > > hi, > > > > i am coming from network job, so i am used to sub/super netting > somehow > > :) > > thanks anyway ! > > > > Regards, > > Mathieu CHATEAU > > http://lordoftheping.blogspot.com > > > > > > ----- Original Message ----- > > From: "Brian Desmond" <[EMAIL PROTECTED]> > > To: <ActiveDir@mail.activedir.org> > > Sent: Saturday, January 27, 2007 6:47 PM > > Subject: RE: [ActiveDir] Overlapping AD Subnet Boundaries > > > > > > While your math is right you should look up supernetting and > subnetting > > somewhere. > > > > Thanks, > > Brian Desmond > > [EMAIL PROTECTED] > > > > c - 312.731.3132 > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:ActiveDir- > > > [EMAIL PROTECTED] On Behalf Of Mathieu CHATEAU > > > Sent: Saturday, January 27, 2007 4:17 AM > > > To: ActiveDir@mail.activedir.org > > > Subject: Re: [ActiveDir] Overlapping AD Subnet Boundaries > > > > > > In my opinion, there is a pure TCP/IP network issue... > > > > > > A sample example: > > > The DC is 10.10.0.1 with a netmask of 255.255.0.0 (/16 as > indicated). > > > if you try to ping 10.10.41.104, it will try to communicate on the > > LAN, > > > seeking its arp. > > > It won't send packet to the gateway since 10.10.41.0 must be on the > > > LAN. > > > > > > The only way to get it work is to use a Layer 2 link between both > > site. > > > > > > > > > Regards, > > > Mathieu CHATEAU > > > http://lordoftheping.blogspot.com > > > > > > > > > ----- Original Message ----- > > > From: "Almeida Pinto, Jorge de" > > <[EMAIL PROTECTED]> > > > To: <ActiveDir@mail.activedir.org> > > > Sent: Friday, January 26, 2007 11:37 PM > > > Subject: RE: [ActiveDir] Overlapping AD Subnet Boundaries > > > > > > > > > it will go for the second site 10.10.41.0/24 (= best matching) > > > > > > Met vriendelijke groeten / Kind regards, > > > Ing. Jorge de Almeida Pinto > > > Senior Infrastructure Consultant > > > MVP Windows Server - Directory Services > > > > > > LogicaCMG Nederland B.V. (BU RTINC Eindhoven) > > > ( Tel : +31-(0)40-29.57.777 > > > ( Mobile : +31-(0)6-26.26.62.80 > > > * E-mail : <see sender address> > > > > > > ________________________________ > > > > > > From: [EMAIL PROTECTED] on behalf of Brian Cline > > > Sent: Fri 2007-01-26 22:19 > > > To: ActiveDir@mail.activedir.org > > > Subject: [ActiveDir] Overlapping AD Subnet Boundaries > > > > > > > > > > > > Say I create an AD subnet of 10.10.0.0/16 and assign it to our > > primary > > > site, > > > and another subnet as 10.10.41.0/24 and assign it to a secondary > > site. > > > Will > > > AD treat a client address of, say, 10.10.41.104 as a client on the > > > secondary > > > site, or will it default to the more general primary subnet? The > > reason > > > I > > > ask is we now have a need for a second AD site (I can see all the > > > enterprise > > > folks grinning now) and we have quite a number of other subnets > that > > > I'd > > > have to manually enter if this is not the case. I don't mind doing > > it, > > > but I > > > was curious either way. > > > > > > Brian Cline, Applications Developer > > > Department of Information Technology > > > G&P Trucking Company, Inc. > > > 803.936.8595 Direct Line > > > 800.922.1147 Toll-Free (x8595) > > > 803.739.1176 Fax > > > > > > > > > > > > This e-mail and any attachment is for authorised use by the > intended > > > recipient(s) only. It may contain proprietary material, > confidential > > > information and/or be subject to legal privilege. It should not be > > > copied, > > > disclosed to, retained or used by, any other party. If you are not > an > > > intended recipient then please promptly delete this e-mail and any > > > attachment and all copies and inform the sender. Thank you. > > > > > > List info : http://www.activedir.org/List.aspx > > > List FAQ : http://www.activedir.org/ListFAQ.aspx > > > List archive: http://www.activedir.org/ma/default.aspx > > List info : http://www.activedir.org/List.aspx > > List FAQ : http://www.activedir.org/ListFAQ.aspx > > List archive: http://www.activedir.org/ma/default.aspx > > > > List info : http://www.activedir.org/List.aspx > > List FAQ : http://www.activedir.org/ListFAQ.aspx > > List archive: http://www.activedir.org/ma/default.aspx > List info : http://www.activedir.org/List.aspx > List FAQ : http://www.activedir.org/ListFAQ.aspx > List archive: http://www.activedir.org/ma/default.aspx > > List info : http://www.activedir.org/List.aspx > List FAQ : http://www.activedir.org/ListFAQ.aspx > List archive: http://www.activedir.org/ma/default.aspx List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.activedir.org/ma/default.aspx
