DHCP Server

I know this is similar to a few other posts, but I think I have a different
problem. My DHCP server has started shutting down. When I check the event log
the error says "Encountered another DHCP server with IP xxx.xxx.xxx.xxx".
xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
addresses, the only thing is I have a static address from them, and am fully
configured for static only. There are no other devices on the network that
could even hand out an IP. The cable company says everything looks fine. this
had been working fine until last week and then started acting up. Any help?

Thanks.

Henry
Wed Nov 03 16:18:57 CST 2004

Are you running one NIC or two ?
Two is the recommended, and then even if SBS sees a DHCP Server on the
external NIC it won't complain.

--
Henry Craven {SBS-MVP}
Melbourne Australia

"Tim" <Tim@discussions.microsoft.com> wrote in message
news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> I know this is similar to a few other posts, but I think I have a
different
> problem. My DHCP server has started shutting down. When I check the
event log
> the error says "Encountered another DHCP server with IP
xxx.xxx.xxx.xxx".
> xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
> addresses, the only thing is I have a static address from them, and am
fully
> configured for static only. There are no other devices on the network
that
> could even hand out an IP. The cable company says everything looks
fine. this
> had been working fine until last week and then started acting up. Any
help?
>
> Thanks.

Tim
Wed Nov 03 16:36:02 CST 2004

I am running 2 NIC's, one external with a static IP and one internal with a
staic, private IP. Any ideas?

"Henry Craven" wrote:

> Are you running one NIC or two ?
> Two is the recommended, and then even if SBS sees a DHCP Server on the
> external NIC it won't complain.
>
> --
> Henry Craven {SBS-MVP}
> Melbourne Australia
>
> "Tim" <Tim@discussions.microsoft.com> wrote in message
> news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> > I know this is similar to a few other posts, but I think I have a
> different
> > problem. My DHCP server has started shutting down. When I check the
> event log
> > the error says "Encountered another DHCP server with IP
> xxx.xxx.xxx.xxx".
> > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
> > addresses, the only thing is I have a static address from them, and am
> fully
> > configured for static only. There are no other devices on the network
> that
> > could even hand out an IP. The cable company says everything looks
> fine. this
> > had been working fine until last week and then started acting up. Any
> help?
> >
> > Thanks.
>
>
>

Marina
Wed Nov 03 17:37:11 CST 2004

Hi Tim,

Please post the ipconfig/all from the server.

--
Regards,

Marina
Microsoft SBS-MVP

"Tim" <Tim@discussions.microsoft.com> schreef in bericht
news:5F58C098-752E-4478-BAD0-281106D090C5@microsoft.com...
> I am running 2 NIC's, one external with a static IP and one internal with
a
> staic, private IP. Any ideas?
>
> "Henry Craven" wrote:
>
> > Are you running one NIC or two ?
> > Two is the recommended, and then even if SBS sees a DHCP Server on the
> > external NIC it won't complain.
> >
> > --
> > Henry Craven {SBS-MVP}
> > Melbourne Australia
> >
> > "Tim" <Tim@discussions.microsoft.com> wrote in message
> > news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> > > I know this is similar to a few other posts, but I think I have a
> > different
> > > problem. My DHCP server has started shutting down. When I check the
> > event log
> > > the error says "Encountered another DHCP server with IP
> > xxx.xxx.xxx.xxx".
> > > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
> > > addresses, the only thing is I have a static address from them, and am
> > fully
> > > configured for static only. There are no other devices on the network
> > that
> > > could even hand out an IP. The cable company says everything looks
> > fine. this
> > > had been working fine until last week and then started acting up. Any
> > help?
> > >
> > > Thanks.
> >
> >
> >

Jim
Wed Nov 03 18:04:19 CST 2004

Is the cable company network device plugged directly into the second
nic, not into your internal network switch?

Tim <Tim@discussions.microsoft.com> wrote:

>I am running 2 NIC's, one external with a static IP and one internal with a
>staic, private IP. Any ideas?
>
>"Henry Craven" wrote:
>
>> Are you running one NIC or two ?
>> Two is the recommended, and then even if SBS sees a DHCP Server on the
>> external NIC it won't complain.
>>
>> --
>> Henry Craven {SBS-MVP}
>> Melbourne Australia
>>
>> "Tim" <Tim@discussions.microsoft.com> wrote in message
>> news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
>> > I know this is similar to a few other posts, but I think I have a
>> different
>> > problem. My DHCP server has started shutting down. When I check the
>> event log
>> > the error says "Encountered another DHCP server with IP
>> xxx.xxx.xxx.xxx".
>> > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
>> > addresses, the only thing is I have a static address from them, and am
>> fully
>> > configured for static only. There are no other devices on the network
>> that
>> > could even hand out an IP. The cable company says everything looks
>> fine. this
>> > had been working fine until last week and then started acting up. Any
>> help?
>> >
>> > Thanks.
>>
>>
>>

Jim B. SBS Community Member
remove the mvp to send email

Tim
Wed Nov 03 19:12:02 CST 2004

Here you go - thank you!

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : server1
Primary Dns Suffix . . . . . . . : CommercialMasonry.local
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes
DNS Suffix Search List. . . . . . : CommercialMasonry.local

Ethernet adapter Server Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
Physical Address. . . . . . . . . : 00-C0-9F-2B-51-EA
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter WAN Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Linksys LNE100TX Fast Ethernet
Adapter(LN
E100TX v4)
Physical Address. . . . . . . . . : 00-0C-41-25-13-7B
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 69.161.35.110
Subnet Mask . . . . . . . . . . . : 255.255.255.252
Default Gateway . . . . . . . . . : 69.161.35.109
DNS Servers . . . . . . . . . . . : 68.168.96.2
68.168.96.5
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>



"Marina Roos [SBS-MVP]" wrote:

> Hi Tim,
>
> Please post the ipconfig/all from the server.
>
> --
> Regards,
>
> Marina
> Microsoft SBS-MVP
>
> "Tim" <Tim@discussions.microsoft.com> schreef in bericht
> news:5F58C098-752E-4478-BAD0-281106D090C5@microsoft.com...
> > I am running 2 NIC's, one external with a static IP and one internal with
> a
> > staic, private IP. Any ideas?
> >
> > "Henry Craven" wrote:
> >
> > > Are you running one NIC or two ?
> > > Two is the recommended, and then even if SBS sees a DHCP Server on the
> > > external NIC it won't complain.
> > >
> > > --
> > > Henry Craven {SBS-MVP}
> > > Melbourne Australia
> > >
> > > "Tim" <Tim@discussions.microsoft.com> wrote in message
> > > news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> > > > I know this is similar to a few other posts, but I think I have a
> > > different
> > > > problem. My DHCP server has started shutting down. When I check the
> > > event log
> > > > the error says "Encountered another DHCP server with IP
> > > xxx.xxx.xxx.xxx".
> > > > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
> > > > addresses, the only thing is I have a static address from them, and am
> > > fully
> > > > configured for static only. There are no other devices on the network
> > > that
> > > > could even hand out an IP. The cable company says everything looks
> > > fine. this
> > > > had been working fine until last week and then started acting up. Any
> > > help?
> > > >
> > > > Thanks.
> > >
> > >
> > >
>
>
>

Marina
Wed Nov 03 19:52:07 CST 2004

Hi Tim,

DNS on your external nic should ***only*** point to your server-IP.
Which IP is showing up in your log as being DHCP server as well?
Check the Scope options in DHCP server. 003, 006 and 044 should point to
your server-IP, 015 to you local domain name and 046 should have 0x8.
Is the DHCP scope 192.168.16.0?

--
Regards,

Marina
Microsoft SBS-MVP

"Tim" <Tim@discussions.microsoft.com> schreef in bericht
news:48D1A3B3-E396-48C3-9A32-8BDBD205EB33@microsoft.com...
> Here you go - thank you!
>
> Microsoft Windows [Version 5.2.3790]
> (C) Copyright 1985-2003 Microsoft Corp.
>
> C:\Documents and Settings\Administrator>ipconfig /all
>
> Windows IP Configuration
>
> Host Name . . . . . . . . . . . . : server1
> Primary Dns Suffix . . . . . . . : CommercialMasonry.local
> Node Type . . . . . . . . . . . . : Unknown
> IP Routing Enabled. . . . . . . . : Yes
> WINS Proxy Enabled. . . . . . . . : Yes
> DNS Suffix Search List. . . . . . : CommercialMasonry.local
>
> Ethernet adapter Server Local Area Connection:
>
> Connection-specific DNS Suffix . :
> Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network
Connection
> Physical Address. . . . . . . . . : 00-C0-9F-2B-51-EA
> DHCP Enabled. . . . . . . . . . . : No
> IP Address. . . . . . . . . . . . : 192.168.16.2
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . :
> DNS Servers . . . . . . . . . . . : 192.168.16.2
> Primary WINS Server . . . . . . . : 192.168.16.2
>
> Ethernet adapter WAN Connection:
>
> Connection-specific DNS Suffix . :
> Description . . . . . . . . . . . : Linksys LNE100TX Fast Ethernet
> Adapter(LN
> E100TX v4)
> Physical Address. . . . . . . . . : 00-0C-41-25-13-7B
> DHCP Enabled. . . . . . . . . . . : No
> IP Address. . . . . . . . . . . . : 69.161.35.110
> Subnet Mask . . . . . . . . . . . : 255.255.255.252
> Default Gateway . . . . . . . . . : 69.161.35.109
> DNS Servers . . . . . . . . . . . : 68.168.96.2
> 68.168.96.5
> NetBIOS over Tcpip. . . . . . . . : Disabled
>
> C:\Documents and Settings\Administrator>
>
>
>
> "Marina Roos [SBS-MVP]" wrote:
>
> > Hi Tim,
> >
> > Please post the ipconfig/all from the server.
> >
> > --
> > Regards,
> >
> > Marina
> > Microsoft SBS-MVP
> >
> > "Tim" <Tim@discussions.microsoft.com> schreef in bericht
> > news:5F58C098-752E-4478-BAD0-281106D090C5@microsoft.com...
> > > I am running 2 NIC's, one external with a static IP and one internal
with
> > a
> > > staic, private IP. Any ideas?
> > >
> > > "Henry Craven" wrote:
> > >
> > > > Are you running one NIC or two ?
> > > > Two is the recommended, and then even if SBS sees a DHCP Server on
the
> > > > external NIC it won't complain.
> > > >
> > > > --
> > > > Henry Craven {SBS-MVP}
> > > > Melbourne Australia
> > > >
> > > > "Tim" <Tim@discussions.microsoft.com> wrote in message
> > > > news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> > > > > I know this is similar to a few other posts, but I think I have a
> > > > different
> > > > > problem. My DHCP server has started shutting down. When I check
the
> > > > event log
> > > > > the error says "Encountered another DHCP server with IP
> > > > xxx.xxx.xxx.xxx".
> > > > > xxx.xxx.xxx.xxx is the gateway address for the cable company's
DHCP
> > > > > addresses, the only thing is I have a static address from them,
and am
> > > > fully
> > > > > configured for static only. There are no other devices on the
network
> > > > that
> > > > > could even hand out an IP. The cable company says everything looks
> > > > fine. this
> > > > > had been working fine until last week and then started acting up.
Any
> > > > help?
> > > > >
> > > > > Thanks.
> > > >
> > > >
> > > >
> >
> >
> >

Tim
Wed Nov 03 20:19:07 CST 2004

The cable modem goes directly into the second nic.


"Jim Behning" wrote:

> Is the cable company network device plugged directly into the second
> nic, not into your internal network switch?
>
> Tim <Tim@discussions.microsoft.com> wrote:
>
> >I am running 2 NIC's, one external with a static IP and one internal with a
> >staic, private IP. Any ideas?
> >
> >"Henry Craven" wrote:
> >
> >> Are you running one NIC or two ?
> >> Two is the recommended, and then even if SBS sees a DHCP Server on the
> >> external NIC it won't complain.
> >>
> >> --
> >> Henry Craven {SBS-MVP}
> >> Melbourne Australia
> >>
> >> "Tim" <Tim@discussions.microsoft.com> wrote in message
> >> news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
> >> > I know this is similar to a few other posts, but I think I have a
> >> different
> >> > problem. My DHCP server has started shutting down. When I check the
> >> event log
> >> > the error says "Encountered another DHCP server with IP
> >> xxx.xxx.xxx.xxx".
> >> > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
> >> > addresses, the only thing is I have a static address from them, and am
> >> fully
> >> > configured for static only. There are no other devices on the network
> >> that
> >> > could even hand out an IP. The cable company says everything looks
> >> fine. this
> >> > had been working fine until last week and then started acting up. Any
> >> help?
> >> >
> >> > Thanks.
> >>
> >>
> >>
>
> Jim B. SBS Community Member
> remove the mvp to send email
>

Rob
Thu Nov 04 01:06:38 CST 2004

Yea... Setting the external NIC to use the ISP's DNS server(s) is a
common mistake. See the following for a somewhat graphical
representation of what Marina suggested:

http://www.sbslinks.com/2000norouter.htm

In article <OW7jAEhwEHA.3832@TK2MSFTNGP10.phx.gbl>,
marina@roos.nodontwantspam.nl.com says...
> DNS on your external nic should ***only*** point to your server-IP.
> Which IP is showing up in your log as being DHCP server as well?
> Check the Scope options in DHCP server. 003, 006 and 044 should point to
> your server-IP, 015 to you local domain name and 046 should have 0x8.
> Is the DHCP scope 192.168.16.0?

Jim
Thu Nov 04 07:58:26 CST 2004

You need to fix your dns as per www.smallbizserver.net 2 nic/router
networking article.

Is there any chance that some workstation has internet connection
sharing turned on? I thought that a workstation could act as a dhcp
server when ICS is turned on.

Tim <Tim@discussions.microsoft.com> wrote:

>The cable modem goes directly into the second nic.
>
>
>"Jim Behning" wrote:
>
>> Is the cable company network device plugged directly into the second
>> nic, not into your internal network switch?
>>
>> Tim <Tim@discussions.microsoft.com> wrote:
>>
>> >I am running 2 NIC's, one external with a static IP and one internal with a
>> >staic, private IP. Any ideas?
>> >
>> >"Henry Craven" wrote:
>> >
>> >> Are you running one NIC or two ?
>> >> Two is the recommended, and then even if SBS sees a DHCP Server on the
>> >> external NIC it won't complain.
>> >>
>> >> --
>> >> Henry Craven {SBS-MVP}
>> >> Melbourne Australia
>> >>
>> >> "Tim" <Tim@discussions.microsoft.com> wrote in message
>> >> news:D21102BE-FD43-4CDD-BFDB-780C549A1F3A@microsoft.com...
>> >> > I know this is similar to a few other posts, but I think I have a
>> >> different
>> >> > problem. My DHCP server has started shutting down. When I check the
>> >> event log
>> >> > the error says "Encountered another DHCP server with IP
>> >> xxx.xxx.xxx.xxx".
>> >> > xxx.xxx.xxx.xxx is the gateway address for the cable company's DHCP
>> >> > addresses, the only thing is I have a static address from them, and am
>> >> fully
>> >> > configured for static only. There are no other devices on the network
>> >> that
>> >> > could even hand out an IP. The cable company says everything looks
>> >> fine. this
>> >> > had been working fine until last week and then started acting up. Any
>> >> help?
>> >> >
>> >> > Thanks.
>> >>
>> >>
>> >>
>>
>> Jim B. SBS Community Member
>> remove the mvp to send email
>>

Jim B. SBS Community Member
remove the mvp to send email