DHCP and 255.0.0.0 subnet mask
Hi we run a couple of server 2008 servers geographically separated on a managed wan
The IP configuration we use is 10.xx.yy.zz where x denotes location and y denotes equipment type.
We use static addressing with a subnet mask of 255.0.0.0 which gives good access across the network, however obviously there is a problem when it comes to DHCP for either VPN devices or wireless devices as DHCP will only provide 255.255.255 etc, any ideas on a way to overcome this problem would be greatly appreciated.
The IP configuration we use is 10.xx.yy.zz where x denotes location and y denotes equipment type.
We use static addressing with a subnet mask of 255.0.0.0 which gives good access across the network, however obviously there is a problem when it comes to DHCP for either VPN devices or wireless devices as DHCP will only provide 255.255.255 etc, any ideas on a way to overcome this problem would be greatly appreciated.
ASKER
Thanks Chris, yes I realize it is over the top, however that was not my decision unfortunately.
We are in the process of changing networks over at the moment, and I am using the RRAS server to give out address's but it gives out 255.255.255.255 as the mask, which means the VPN client cannot see anything on the network. how would I set up the DHCP or RRAS server to give out a mask of 255.0.0.0, is it possible?
We are in the process of changing networks over at the moment, and I am using the RRAS server to give out address's but it gives out 255.255.255.255 as the mask, which means the VPN client cannot see anything on the network. how would I set up the DHCP or RRAS server to give out a mask of 255.0.0.0, is it possible?
It's quite rare for something like RRAS to give out addresses within the same range as an active internal network. Normally you'd have it give out separate addressing because without that it won't route.
Do you know where the addresses RRAS gives out is defined?
Chris
ASKER
You can set an IP address pool in RRAS rather than use the DHCP server, however It always sets the subnet mask to 255.255.255.255 and I don't know how to change that, possibly it is because a DHCP server is also active serving the old network, do you know if the DHCP server can provide a subnet mask of 255.0.0.0 if required?
It's trying to create a point to point connection, it shouldn't really matter very much if the RRAS address range and the internal network range are separate.
Chris
ASKER
The situation is, the client PC's need access to two terminal servers on our network 10.2.2.1 and 10.1.2.1 second octet is different due to our addressing system being by location, our static IP machines on our network can use both servers due to their subnet mask being manually set to 255.0.0.0 whereas if I connect via VPN and then try to access both servers through terminal services due to the VPN machines being issued 255.255.255 masks, dependent on the IP pool address's they can see only 1 x terminal server.
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ASKER
Thanks adaroc,
Sounds like a solution, unfortunately I won't be able to test for 24 hours, but I will post back then.
Sounds like a solution, unfortunately I won't be able to test for 24 hours, but I will post back then.
great !!!!
im interested to know as well !!! good luck .....
ASKER
Thanks adaroc,
The solution to this particular problem was to clear the Use default gateway on remote network check box, now I have access to both TS Servers as required.
The solution to this particular problem was to clear the Use default gateway on remote network check box, now I have access to both TS Servers as required.
When you get an address with a 255.255.255.0 mask run "ipconfig /all" and check the DHCP Server it lists. DHCP won't be changing the mask, it's more likely you have more than one DHCP server handing out addresses.
You know, of course, that using 255.0.0.0 is pretty over the top? 16,777,214 addresses available in that range ;)
Chris