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DHCP Relay and RRAS Router

 
 
Bob Montgomery
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      02-12-2004, 11:35 PM
I've configured RRAS to route between two subnets, but I
can't get DHCP relay to work.

The network consists of subnet A and subnet B with network
addresses 192.168.168.0/24 and 192.10.10.0/24.

A W2K Small Business Server on subnet A (192.168.168.9)is
running DHCP with scopes for the two subnets.

A W2K Server with NICS on the two subnets (192.168.168.58
and 192.10.10.1) is running RRAS and is configured as a
lan router. In addition, I've installed DHCP relay with
the address of the DHCP server located on subnet A and an
interface on subnet B.

I have a single Win98 computer attached to subnet B and
I've configured tcp/ip to obtain an address automatically,
however, it fails to obtain an IP address.

Using W2K Network Monitor to capture the DHCP packets on
the DHCP server and the RRAS server show me the following:

The DHCP Discover broadcast by the Win98 machine is being
received by the DHCP relay; the DHCP Discover sent by the
DHCP relay is being received by the DHCP server; and the
DHCP Offer sent by the DHCP server is being received by
the RRAS server on the interface connected to subnet A.

In addition, I checked the DHCP relay agent interface on
subnet B shows the following:
Relay Mode: Enabled
Requests Received: 44
Replies Received: 0
Requests Discarded: 11
Replies Discarded: 0

I also see that I'm getting Event ID: 30022 "IPBOOTP was
unable to receive an incoming message on the local
interface with IP address 192.10.10.1. The data is the
error code." and Data 0000: 38 27 00 00. Unfortunately,
a google search doesn't yield anything helpful.

Apart from the DHCP problem TCP/IP appears to be
functioning normally on the Win98 computer. In fact, if I
manually configure the Win98 computer everything works
just great.

TIA for your help.

--Bob Montgomery
 
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Marc Reynolds [MSFT]
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Posts: n/a

 
      02-13-2004, 01:42 AM
Does the RRAS box happen to have any of these services installed?

DHCP Server
ICS
NAT (with automatic addressing enabled)

If so disable the service(s).






--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.


"Bob Montgomery" <(E-Mail Removed)> wrote in message
news:f08201c3f1c9$592a49d0$(E-Mail Removed)...
> I've configured RRAS to route between two subnets, but I
> can't get DHCP relay to work.
>
> The network consists of subnet A and subnet B with network
> addresses 192.168.168.0/24 and 192.10.10.0/24.
>
> A W2K Small Business Server on subnet A (192.168.168.9)is
> running DHCP with scopes for the two subnets.
>
> A W2K Server with NICS on the two subnets (192.168.168.58
> and 192.10.10.1) is running RRAS and is configured as a
> lan router. In addition, I've installed DHCP relay with
> the address of the DHCP server located on subnet A and an
> interface on subnet B.
>
> I have a single Win98 computer attached to subnet B and
> I've configured tcp/ip to obtain an address automatically,
> however, it fails to obtain an IP address.
>
> Using W2K Network Monitor to capture the DHCP packets on
> the DHCP server and the RRAS server show me the following:
>
> The DHCP Discover broadcast by the Win98 machine is being
> received by the DHCP relay; the DHCP Discover sent by the
> DHCP relay is being received by the DHCP server; and the
> DHCP Offer sent by the DHCP server is being received by
> the RRAS server on the interface connected to subnet A.
>
> In addition, I checked the DHCP relay agent interface on
> subnet B shows the following:
> Relay Mode: Enabled
> Requests Received: 44
> Replies Received: 0
> Requests Discarded: 11
> Replies Discarded: 0
>
> I also see that I'm getting Event ID: 30022 "IPBOOTP was
> unable to receive an incoming message on the local
> interface with IP address 192.10.10.1. The data is the
> error code." and Data 0000: 38 27 00 00. Unfortunately,
> a google search doesn't yield anything helpful.
>
> Apart from the DHCP problem TCP/IP appears to be
> functioning normally on the Win98 computer. In fact, if I
> manually configure the Win98 computer everything works
> just great.
>
> TIA for your help.
>
> --Bob Montgomery



 
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Bob Montgomery
Guest
Posts: n/a

 
      02-13-2004, 02:48 AM
Marc,

Nope.

It's an Active Directory Domain controller running DNS,
but DHCP is running on my W2K Small Business Server.

--Bob Montgomery


>-----Original Message-----
>Does the RRAS box happen to have any of these services

installed?
>
>DHCP Server
>ICS
>NAT (with automatic addressing enabled)
>
>If so disable the service(s).
>
>
>
>
>
>
>--
>
>Thanks,
>Marc Reynolds
>Microsoft Technical Support
>
>This posting is provided "AS IS" with no warranties, and

confers no rights.
>
>
>"Bob Montgomery" <(E-Mail Removed)>

wrote in message
>news:f08201c3f1c9$592a49d0$(E-Mail Removed)...
>> I've configured RRAS to route between two subnets, but I
>> can't get DHCP relay to work.
>>
>> The network consists of subnet A and subnet B with

network
>> addresses 192.168.168.0/24 and 192.10.10.0/24.
>>
>> A W2K Small Business Server on subnet A (192.168.168.9)

is
>> running DHCP with scopes for the two subnets.
>>
>> A W2K Server with NICS on the two subnets

(192.168.168.58
>> and 192.10.10.1) is running RRAS and is configured as a
>> lan router. In addition, I've installed DHCP relay with
>> the address of the DHCP server located on subnet A and

an
>> interface on subnet B.
>>
>> I have a single Win98 computer attached to subnet B and
>> I've configured tcp/ip to obtain an address

automatically,
>> however, it fails to obtain an IP address.
>>
>> Using W2K Network Monitor to capture the DHCP packets on
>> the DHCP server and the RRAS server show me the

following:
>>
>> The DHCP Discover broadcast by the Win98 machine is

being
>> received by the DHCP relay; the DHCP Discover sent by

the
>> DHCP relay is being received by the DHCP server; and the
>> DHCP Offer sent by the DHCP server is being received by
>> the RRAS server on the interface connected to subnet A.
>>
>> In addition, I checked the DHCP relay agent interface on
>> subnet B shows the following:
>> Relay Mode: Enabled
>> Requests Received: 44
>> Replies Received: 0
>> Requests Discarded: 11
>> Replies Discarded: 0
>>
>> I also see that I'm getting Event ID: 30022 "IPBOOTP was
>> unable to receive an incoming message on the local
>> interface with IP address 192.10.10.1. The data is the
>> error code." and Data 0000: 38 27 00 00.

Unfortunately,
>> a google search doesn't yield anything helpful.
>>
>> Apart from the DHCP problem TCP/IP appears to be
>> functioning normally on the Win98 computer. In fact,

if I
>> manually configure the Win98 computer everything works
>> just great.
>>
>> TIA for your help.
>>
>> --Bob Montgomery

>
>
>.
>

 
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