Win2k RRAS DHCP not working

[Tom Turck]

I have a Windows 2000 Server Sp4 running RRAS with a
modem serving as a dial up server. I am always able to
dial up to the Win 2k RRAS server. The RRAS server has
one network adapter and one modem. TCP/IP is the only
protocol on the Win 2K RRAS server.

When the Win 2K RRAS server is configured to give IP
addresses to dial up clients using a Static Pool
everything is fine and the dial up clients are able to
access other hosts on the RRAS server's LAN.

When I try to use DHCP to give addresses to the Dial up
clients, the clients get a valid DHCP address from the
RRAS connection, but they cannot access any hosts on the
RRAS server's LAN. The dial up clients cannot even ping
the network adapter of the RRAS server.

I have checked the routing tables on the RRAS server and
the dial up clients. Everything seems to be fine looking
at the routing tables.

Currently, on the same network, is a NT 4.0 Sp6a RRAS
server using DHCP to distribute ip addreses to dial up
clients and it is working just fine...

Is there some known issue why Windows 2000 RRAS using
DHCP to distribute IP addresses to dial-up clients
behaves this way?

I have followed Microsft's instructions on setting up
RRAS to the letter.

 

[Steven L Umbach]

Try running ipconfig /all on the dial up connections for both scenarios to see if
anything looks different which depending on if you have dhcp relay configured in rras
the computers could get different settings for dns, wins, etc. Otherwise there may be
some packet filtering somewhere in the chain [network adapter, Remote Access Policy,
ipsec filtering] that allows access to the ip addresses in the static pool
ly. --- Steve

http://support.microsoft.com/default.aspx?scid=kb;en-us;160699
http://support.microsoft.com/default.aspx?scid=kb;en-us;232703

 

[Guest]

There is no packet filtering anywhere
and I am testing ip connectivity using ip address so WINS
or DNS is irrelevant...

-----Original Message-----
Try running ipconfig /all on the dial up connections for both scenarios to see if
anything looks different which depending on if you have dhcp relay configured in rras
the computers could get different settings for dns,

wins, etc. Otherwise there may be

some packet filtering somewhere in the chain [network adapter, Remote Access Policy,
ipsec filtering] that allows access to the ip addresses in the static pool
ly. --- Steve

http://support.microsoft.com/default.aspx?scid=kb;en- us;160699

http://support.microsoft.com/default.aspx?scid=kb;en-

us;232703

I have a Windows 2000 Server Sp4 running RRAS with a
modem serving as a dial up server. I am always able to
dial up to the Win 2k RRAS server. The RRAS server has
one network adapter and one modem. TCP/IP is the only
protocol on the Win 2K RRAS server.

When the Win 2K RRAS server is configured to give IP
addresses to dial up clients using a Static Pool
everything is fine and the dial up clients are able to
access other hosts on the RRAS server's LAN.

When I try to use DHCP to give addresses to the Dial up
clients, the clients get a valid DHCP address from the
RRAS connection, but they cannot access any hosts on the
RRAS server's LAN. The dial up clients cannot even ping
the network adapter of the RRAS server.

I have checked the routing tables on the RRAS server and
the dial up clients. Everything seems to be fine looking
at the routing tables.

Currently, on the same network, is a NT 4.0 Sp6a RRAS
server using DHCP to distribute ip addreses to dial up
clients and it is working just fine...

Is there some known issue why Windows 2000 RRAS using
DHCP to distribute IP addresses to dial-up clients
behaves this way?

I have followed Microsft's instructions on setting up
RRAS to the letter.

.