Internet/LAN Connectivity Issues
Jason Piercey
Cable Modem > Watchguard Firebox > Switch > Server / Clients
Not sure what is going on exactly but we lost our internet
connection today but LAN connections were fine. I power
cycled our modem, rebooted the server, power cycled the
watchguard, called the ISP (working fine from their point
of view).
The SBS box says (via the system tray) a network cable
(internet) is unplugged so I unplugged/replugged all ends
of cables from the modem, watchguard, and SBS box.
No dice. Before I left the office the previous unplugged
cable report (big red "x") cleared up for the internet but
is now being displayed on the LAN connection. Still no
internet connection, and now no LAN connection.
Any ideas/advice on how to trouble shoot this problem?
Unless I get this solved it'll be difficult for me to check on
this thread during the day tomorrow (posting from home).
Thanks for your time.
![Larry Struckmeyer[SBS-MVP]'s profile photo](http://lh3.googleusercontent.com/a-/ALV-UjUCYhSEOmVe0D3bzIRvXlQ2gsWwSGRz1DSifzN1MxoZDjGR0Q=s40-c)
Larry Struckmeyer[SBS-MVP]
a setting that allows them to sleep.
Also, run the SBS BPA and fix *everything* it finds.
-
Larry
Please post the resolution to your
issue so others may benefit
-
Get Your SBS Health Check at
www.sbsbpa.com
Merv Porter
Wizard) on the SBS server?
--
Merv Porter [SBS-MVP]
============================
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:u3ZIfJGe...@TK2MSFTNGP04.phx.gbl...
Jason Piercey
think it's a sleep issue but will check into it.
SBS BPA ?
"Larry Struckmeyer[SBS-MVP]" <lstruc...@mis-wizards.com> wrote in message
news:4e6835156ca18...@news.microsoft.com...
Jason Piercey
issue (internet to LAN) may have taken place directly
after running the CEICW but I can't swear to that.
No error messages after running it that I recall. Should
I be looking for something specific?
I verified the preferred and alternate DNS entires and
they match what I have on record from our ISP. I did
notice (going from memory) the IP of the router/firewall
device (displayed at the bottom of the same page as the
DNS info) was listed as 192.168.16.1. To access the
control page for the watchguard I use 192.168.1.1
"Merv Porter" <mwport@no_spam_hotmail.com> wrote in message
news:%23%23blvWGe...@TK2MSFTNGP06.phx.gbl...
Jason Piercey
did not fix the issue. I changed it back (via CEICW)
to 16.1
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:%23fdf7hG...@TK2MSFTNGP04.phx.gbl...
Merv Porter
Has the cabling (to the the NICs or to the Watchguard) been changed?
--
Merv Porter [SBS-MVP]
============================
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:#wmoLmGe...@TK2MSFTNGP02.phx.gbl...
Jason Piercey
> How many NICs in your SBS (1 or 2)?
2 NICs (only one is in use)
> Has the cabling (to the the NICs or to the Watchguard) been changed?
No cabling changed, just unplugged and replugged.
Merv Porter
--
Merv Porter [SBS-MVP]
============================
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:#Komn6Ge...@TK2MSFTNGP05.phx.gbl...
Merv Porter
SBS 2003 Best Practices Analyzer
http://www.microsoft.com/downloads/details.aspx?familyid=3874527A-DE19-49BB-800F-352F3B6F2922&displaylang=en
I would then reboot the server and then carefully run through CEICW.
--
Merv Porter [SBS-MVP]
============================
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:#Komn6Ge...@TK2MSFTNGP05.phx.gbl...
Jason Piercey
"Merv Porter" <mwport@no_spam_hotmail.com> wrote in message
news:O0QmUBHe...@TK2MSFTNGP02.phx.gbl...
Frankster
JFYI....
I have seen cases where a NIC would become inop for Internet until the the
machine was shutdown, UNPLUGGED FROM POWER for a full minute or so and then
re-plugged in and restarted. Might be worth a try. Two machines I've found
this on so far. Both were hp desktops using built-in MB NICs...
-Frank
Jason Piercey
"Jason Piercey" <Ja...@atreng.com> wrote in message
news:u2fGldGe...@TK2MSFTNGP06.phx.gbl...
> SBS BPA ?
>
>
> "Larry Struckmeyer[SBS-MVP]" <lstruc...@mis-wizards.com> wrote in
> message news:4e6835156ca18...@news.microsoft.com...
>> Get Your SBS Health Check at
>> www.sbsbpa.com
>
>
Jason Piercey
"Merv Porter" <mwport@no_spam_hotmail.com> wrote in message
news:Oe3e5CHe...@TK2MSFTNGP04.phx.gbl...
Jason Piercey
modem plugged in just so I can post here.
Here is a summary of what I've done this morning.
Shutdown sbs box
Unplugged firewall, modem, sbs box.
replugged firewall, modem, sbs box
booted sbs box
Network connections applet state internet connection is functional
but local LAN connection is nonfunctional (big red x)
Via Internet Explorer www.google.com and www.microsoft.com did not load
TCP/IP settings for the internet connection via properties
IP 192.168.1.5
Subnet 255.255.255.0
gateway 192.168.1.1
preferred dns 192.168.1.3
alternate dns blank
TCP/IP settings for the local lan connection via properties
IP 192.168.1.3
Subnet 255.255.255.0
gateway blank
preferred dns 192.168.1.3
alternate dns blank
ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : FILESERVER
Primary Dns Suffix . . . . . . . : atreng.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : atreng.local
Ethernet adapter Local Lan Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 EB Network
Connection w
ith I/O Acceleration #2
Physical Address. . . . . . . . . : 00-15-17-0F-09-7B
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
Ethernet adapter Internet Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 EB Network
Connection w
ith I/O Acceleration
Physical Address. . . . . . . . . : 00-15-17-0F-09-7A
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.5
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.1.3
Primary WINS Server . . . . . . . : 192.168.1.5
NetBIOS over Tcpip. . . . . . . . : Disabled
Installed/ran sbsbpa 2003
Did not check for updates (since I do not have a net connection)
Critical issues
Task Offloading is enabled and should be disabled on Windows Small Business
Server 2003. Change the value of the DisableTaskOffload registry key to 1.
For detailed instructions, see the Knowledge Base article "You experience
intermittent communication failure between computers that are running
Windows XP or Windows Server 2003" at
http://go.microsoft.com/fwlink/?LinkId=95149. If the DisableTaskOffload
registry key does not exist, then manually create this registry key and set
its value to 1
I was unable to do the above since I do not know where this key belongs
and I do not have a net connection to follow the kb article.
EDNS is enabled on this server. Some of the routers or firewalls may not
support EDNS. You should disable EDNS on this server. To do so, click
Start, and then click Command Prompt. In the Command Prompt window, type
dnscmd /Config /EnableEdnsProbes 0 and then restart the DNS Server service.
Completed the above
There were some other issues listed but nothing critical.
All of which required a KB article and since I did not
have a connection it was impossible for me to refer to
said articles. I did save the report if anyone wishes to
see it. Although I'm unsure if I can post an xml file here.
Rebooted
Ran the CEICW and selected the following options
+ Broadband
+ A Local router with an IP address
+ Left preferred and alternate DNS as is
+ Local IP of router is 192.168.16.1 (left as is)
+ My server uses an single network connection for both net and lan is
UNchecked
+ ISP connection is set to Internet Connection (192.168.1.5)
+ Local Network connection is set to Local Lan Connection (192.168.1.3)
+ Subnet mask on both of the above are 255.255.255.0
+ Disable firewall
+ Enable internet email
+ Use DNS to route email
+ Use the Microsoft connector for POP3 Mailboxes is UNchecked
+ Use Exchange is checked
+ Email is delivered directly to my server
+ email domain name is atreng.com
+ Enable exchange to remove email attachements that have the following
extentions
Jason Piercey
I've also replaced all cables from modem, firewall, server and switch
Merv Porter
connection and an Internet connection. If you really have a two NIC setup,
the physical setup should match the following diagram...
Two Nics, a static IP address, ISA, router
(with or without ISA)
http://www.smallbizserver.net/Articles/tabid/266/ID/76/Two-Nics-a-static-IP-address-ISA-router.aspx
If you have a single NIC setup, use the following article:
Installing and Configuring SBS 2003
http://www.msexchange.org/tutorials/Installing-and-Configuring-SBS2003.html
--
Merv Porter [SBS-MVP]
============================
"Jason Piercey" <Nomail.com> wrote in message
news:emKc#2OeKH...@TK2MSFTNGP06.phx.gbl...
Jason Piercey
and NIC2 does not, never has.
I remove the cable from NIC1 and placed in NIC2. Now the
"red x" changed to the "Internet connection" from the "Local LAN".
I set the default gateway of the TCP/IP on the "Local LAN" to 1.1
and it all works.
I'm not sure why this was setup the way is was (I didn't set it up)
but I'm happy for now since we are back to functional. I'm not
entirely satisfied since I do not understand why but I'll save that
for another day.
Thanks to all that offered their help, I do appreciate it.
"Merv Porter" <mwport@no_spam_hotmail.com> wrote in message news:Og5ZlUPe...@TK2MSFTNGP02.phx.gbl...
Ace Fekay [MCT]
> There are two NICs in the server. NIC1 has a cable plugged in
> and NIC2 does not, never has.
>
> I remove the cable from NIC1 and placed in NIC2. Now the
> "red x" changed to the "Internet connection" from the "Local LAN".
> I set the default gateway of the TCP/IP on the "Local LAN" to 1.1
> and it all works.
>
> I'm not sure why this was setup the way is was (I didn't set it up)
> but I'm happy for now since we are back to functional. I'm not
> entirely satisfied since I do not understand why but I'll save that
> for another day.
>
> Thanks to all that offered their help, I do appreciate it.
>
>
Make sure you also disable the unused NIC (in Network Connections window),
otherwise it will still register into DNS using the APIPA number, meaning
169.254.x.x, which will cause issues with workstations and possibly the DC
too.
--
Ace
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.
Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE & MCSA
2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.
Jason Piercey
"Ace Fekay [MCT]" <ace...@mvps.RemoveThisPart.org> wrote in message news:uq$YySQeK...@TK2MSFTNGP04.phx.gbl...
Ace Fekay [MCT]
> Done. Thanks.
>
Oh, forgot to mention, after you disable it, check all records so there are
no 169.254.x.x records anywhere, including in the _msdcs zone. Check all
subfolders.
Ace
Ace Fekay [MCT]
> Done. Thanks.
You are welcome.
Ace
Jason Piercey
"Ace Fekay [MCT]" <ace...@mvps.RemoveThisPart.org> wrote in message news:%2382EADR...@TK2MSFTNGP05.phx.gbl...
> Oh, forgot to mention, after you disable it, check all records so there are no 169.254.x.x records anywhere, including in the
> _msdcs zone. Check all subfolders.
Forgive me for being unsure of how to accomplish that but I assume
you mean under the dnsmgmt console. Expanding each node I do not
see any such entries in the right pane.
Ace Fekay [MCT]
Yes, that's the place. Using the DNS console, expand and check each
individual record entry. If you see one, delete it. If you don't, that's a
good thing. Also check the Nameserver tab when you right click on the zone
itself and choose properties.
Ace
Jason Piercey
"Ace Fekay [MCT]" <ace...@mvps.RemoveThisPart.org> wrote in message news:%23QwlZKT...@TK2MSFTNGP04.phx.gbl...
> Yes, that's the place. Using the DNS console, expand and check each individual record entry. If you see one, delete it. If you
> don't, that's a good thing. Also check the Nameserver tab when you right click on the zone itself and choose properties.
Only one entry on the Nameserver tab and it's the IP of the server.
Thanks again.
Ace Fekay [MCT]
You are welcome!
Ace