Re: Page Cannot Be Displayed
From: Les Connor [SBS MVP] (les.connor_at_DEL.cfive.ca)
Date: 08/10/04
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Date: Tue, 10 Aug 2004 18:26:19 -0500
159211 Diagnoses and Treatment of Black Hole Routers
http://support.microsoft.com/?id=159211
What is the MTU set to on the router ?
-- Les Connor [SBS MVP] ------------------------------------- SBS Rocks ! "Les Connor [SBS MVP]" <les.connor@DEL.cfive.ca> wrote in message news:O8FEv7yfEHA.2848@TK2MSFTNGP10.phx.gbl... > Did you fix something? > > I can connect to both these servers and the link to the RWW works, and > they provide certificates that look ok. (I really don't know why you'd > publish your default web site, though ;-/) > > It appears that the problem isn't on the servers, and doesn't exist > between where I sit and the servers. Hope that helps. > > Have you tested for a black-hole router (MTU size). > > -- > Les Connor [SBS MVP] > ------------------------------------- > SBS Rocks ! > > > > "Les Connor [SBS MVP]" <les.connor@DEL.cfive.ca> wrote in message > news:OWdBkwyfEHA.4092@TK2MSFTNGP10.phx.gbl... >> It all looks very confusing to an outsider ;-/. >> >> Are these two sbs installations related to each other in any way? If >> they're in separate physical locations and can and do exist >> independently, I'd suggest reducing the description down to one network >> and working on it. >> >> I do have a question or two, though. These Netopia routers, do they have >> lan and wan interfaces, with IP's assigned to them. I'm not sure I >> understand the reason for the IP addressing on the external nic - sorry >> if you explained it somewhere. >> >> Another approach may be to test your connectivity within the lan, >> completely - ensuring all resources are accessible. Once that is proven, >> then if external access is not right at least we have an idea of where to >> look. >> >> -- >> Les Connor [SBS MVP] >> ------------------------------------- >> SBS Rocks ! >> >> >> >> "Ken" <Ken@discussions.microsoft.com> wrote in message >> news:F7A79D08-4ABC-469D-BE65-4AA7201FC9E9@microsoft.com... >>> OH and BTW, I've been reading post about this issue on more than a few >>> sites >>> (just plain ole due dillegence)...while misery loves company, I'm >>> starting to >>> wonder if something else is amiss, that DNS packet size issue may not be >>> the >>> culprit... >>> has anyone actually resolved this issue? If so I could'nt find any >>> followup >>> (or thank you's <smile>)...Again any help appreciated >>> >>> "Ken" wrote: >>> >>>> Just for clarity (xcuse the long post), here is a clearer picture of >>>> what is >>>> going on: >>>> 1) A XP Home machine serviced by SBC (Ameritech) can connect to: >>>> http://400sc.mergerx.net AND https://400sc.mergerx.net/remote, and >>>> log-on w/o >>>> issue. It cannot connect to http://thg-server.tophatgolf.com (page >>>> cannot be >>>> displayed) >>>> >>>> 2) A NT Workstation (at Cleveland Clinic) can connect to: >>>> http://400sc.mergerx.net , https://400sc.mergerx.net/remote AND to >>>> http://thg-server.tophatgolf.com, it can also log on w/o issue... >>>> >>>> 3) A XP pro machine serviced by SBC (Ameritech) cannot connect to: >>>> http://400sc.mergerx.net, https//400sc.mergerx.net/remote, or >>>> http://thg-server.tophatgolf.com. HOWEVER, it can connect to all >>>> websites via >>>> AOL (using SBC's DSL broadband), although log-on to RWW fails (page >>>> cannot be >>>> displayed) >>>> >>>> 4) Workstations connected locally to EITHER domain (Tophatgolf.local OR >>>> Mergerx.local) on either network cannot connect to either remote >>>> servers >>>> website: (http://THG-Server.tophatgolf.com OR >>>> http://400sc.mergerx.net). >>>> however they can get the servers homepage and logon to the respective >>>> servers >>>> (when physically on the same network)..note: local workstations >>>> belonging to >>>> each domain all have XP Pro >>>> >>>> 5) We have physically moved thg-server.tophatgolf.com to the /29 >>>> network >>>> 68.21.227.161 (gw x.x.x.166), once there, SOME pages could be resolved >>>> (for >>>> workstation in example #1). Obviously we ran the ICW again for this >>>> particular sub-net >>>> >>>> Noteworthy. both /29 networks use SBCglobal as the ISP; same service >>>> level, >>>> same Netopia routers. NAT, DHCP is disabled, basically, all firewall >>>> functions of the router are disabled, and we have compared each routers >>>> settings page by page. We have likewise compared DHCP, DNS, & Remote >>>> Access >>>> page by page. I am a experience netAdmin (15yrs)..I'm stumped. Named >>>> servers >>>> are 206.141.193.55 & 66.73.20.40 (both networks) >>>> >>>> -I've checked certificates, trusted sites, you name it..I'm baffled. >>>> topology is simple, DSL router (netopia) > NIC #1 Switch> NIC #2 and >>>> workstations >>>> >>>> here are the IP config's: >>>> >>>> Windows IP Configuration >>>> >>>> Host Name . . . . . . . . . . . . : 400SC >>>> Primary Dns Suffix . . . . . . . : MergeRX.local >>>> Node Type . . . . . . . . . . . . : Unknown >>>> IP Routing Enabled. . . . . . . . : Yes >>>> WINS Proxy Enabled. . . . . . . . : Yes >>>> DNS Suffix Search List. . . . . . : MergeRX.local >>>> >>>> Ethernet adapter Network Connection: >>>> >>>> Connection-specific DNS Suffix . : >>>> Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network >>>> Connection >>>> Physical Address. . . . . . . . . : 00-11-11-1F-78-F9 >>>> DHCP Enabled. . . . . . . . . . . : No >>>> IP Address. . . . . . . . . . . . : 68.21.227.165 >>>> Subnet Mask . . . . . . . . . . . : 255.0.0.0 >>>> Default Gateway . . . . . . . . . : 68.21.227.166 >>>> DNS Servers . . . . . . . . . . . : 192.168.1.3 >>>> Primary WINS Server . . . . . . . : 192.168.1.3 >>>> NetBIOS over Tcpip. . . . . . . . : Disabled >>>> >>>> Ethernet adapter Server Local Area Connection: >>>> >>>> Connection-specific DNS Suffix . : >>>> Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast >>>> Ethernet >>>> NIC >>>> Physical Address. . . . . . . . . : 00-30-BD-2E-C1-BE >>>> DHCP Enabled. . . . . . . . . . . : No >>>> IP Address. . . . . . . . . . . . : 192.168.1.3 >>>> Subnet Mask . . . . . . . . . . . : 255.255.255.0 >>>> Default Gateway . . . . . . . . . : >>>> DNS Servers . . . . . . . . . . . : 192.168.1.3 >>>> Primary WINS Server . . . . . . . : 192.168.1.3 >>>> >>>> AND for the 2nd Server: >>>> >>>> Windows IP Configuration >>>> >>>> Host Name . . . . . . . . . . . . : thg-server >>>> Primary Dns Suffix . . . . . . . : TopHatGolf.local >>>> Node Type . . . . . . . . . . . . : Unknown >>>> IP Routing Enabled. . . . . . . . : Yes >>>> WINS Proxy Enabled. . . . . . . . : Yes >>>> DNS Suffix Search List. . . . . . : TopHatGolf.local >>>> >>>> Ethernet adapter Network Connection: >>>> >>>> Connection-specific DNS Suffix . : >>>> Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast >>>> Ethernet >>>> NIC >>>> Physical Address. . . . . . . . . : 00-40-F4-99-FC-AF >>>> DHCP Enabled. . . . . . . . . . . : No >>>> IP Address. . . . . . . . . . . . : 68.76.93.146 >>>> Subnet Mask . . . . . . . . . . . : 255.0.0.0 >>>> Default Gateway . . . . . . . . . : 68.76.93.150 >>>> DNS Servers . . . . . . . . . . . : 192.168.1.2 >>>> Primary WINS Server . . . . . . . : 192.168.1.2 >>>> NetBIOS over Tcpip. . . . . . . . : Disabled >>>> >>>> Ethernet adapter Server Local Area Connection: >>>> >>>> Connection-specific DNS Suffix . : >>>> Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network >>>> Connection >>>> Physical Address. . . . . . . . . : 00-C0-9F-3D-27-DA >>>> DHCP Enabled. . . . . . . . . . . : No >>>> IP Address. . . . . . . . . . . . : 192.168.1.2 >>>> Subnet Mask . . . . . . . . . . . : 255.255.255.0 >>>> Default Gateway . . . . . . . . . : >>>> DNS Servers . . . . . . . . . . . : 192.168.1.2 >>>> Primary WINS Server . . . . . . . : 192.168.1.2 >>>> >>>> We are not trying to do any trust or other complexities, it's just >>>> users in >>>> both domains need access to each domains sharepoint site. As mentioned, >>>> as >>>> far as I can tell, the assorted browsers are configured properly. We >>>> can >>>> figure out if this a browser specific issue, a OS issue, a local DNS >>>> issue, a >>>> WAN issue or what the heck..These are BRAND NEW Dell SC servers, again >>>> the >>>> OS's are darn near shrink wrapped, plain vanillia (wizard configs >>>> only). >>>> These are scheduled for production now. We can't by CAL's or anything >>>> w/o >>>> resolution...I appreciate ANY guesses..Thanks folks >>>> >>>> >>>> "Marina Roos [SBS-MVP]" wrote: >>>> >>>> > Hi Ken, >>>> > >>>> > Can you post the ipconfig/all from the servers? You know that XP Home >>>> > can't >>>> > join a domain, right? >>>> > >>>> > -- >>>> > Regards, >>>> > >>>> > Marina >>>> > Microsoft SBS-MVP >>>> > >>>> > "Ken" <Ken@discussions.microsoft.com> schreef in bericht >>>> > news:078344A7-D4BC-44DF-AC9B-C9163314B0C8@microsoft.com... >>>> > > Urgent Mystery of Mysteries...we got 2 NEW Dell servers running SBS >>>> > > 2003 >>>> > (no >>>> > > ISA), both have correct A records with EasyDNS, both have same DSL >>>> > > service >>>> > > with SBC, both have fixed IP's, both have same service level, both >>>> > > have >>>> > been >>>> > > configured "plain jane" using ICW, ect (each is regestered with a >>>> > different >>>> > > TLD with Easy DNS however). We have spent WEEKS combing through the >>>> > routers, >>>> > > IIS, ect to find ANY differences. We have re-installed SBS 2003 on >>>> > > both >>>> > > several times; yet for whatever reason we get a "page cannot be >>>> > > displayed" >>>> > > sort of "willy nilly". Some clients can connect to both (a NT >>>> > > workstation >>>> > a a >>>> > > hospital), some cannot connect to either using SBC, some XP Home >>>> > > pc's can >>>> > > connect to one and not the other, stranger still, the server home >>>> > > page >>>> > will >>>> > > work using AOL, but not SBC (same PC). Worse, we can change >>>> > > locations, and >>>> > > the issue seems to "partially" resolve (2 seperate locations using >>>> > different >>>> > > /29 networks). At this juncture, we cannot "go-live" and it is >>>> > > holding up >>>> > > business, any help APPRECIATED (I can forgoe security concerns and >>>> > > reveal >>>> > > domain, IP's, ect..whats the difference at this point?) >>>> > >>>> > >>>> > >> >> > >
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