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Extend usable IP address range (external IP)
Hi
I am asking this question on behalf of our client
They have 2 offices (HO and a branch office) and are currently using Class 'C' external IP range for all their PCs and servers (They dont seem to know the reason why they are using external IP range) (220.110.0.1 to 220.110.0.100 SNM : 255.255.255.0) for HO and 220.110.0.101 to 220.110.0.200, SNM: 255.255.255.0) for their branch office. (the two sites are connected using fibre connection)
The DC is Windows 2000 advanced server. All servers are assigned Static IP and based in HO. DHCP scope is used to automate the IP Addressing in client side. DHCP and DNS services are running.on DC. A exchange server is running for email purpose. HO servers includes domain controllers, PC, Teklogix,Hand Punch Machine,cameras & printers.As their network is expanding, they want to get more IP address (atleast another 254 addresses)
AS they are 24 x 7 hrs operational, they would like to accomplish a solution with minimum down time and that gives them Atleast another 254 IP address. Could some one explain in details what needs to be done to complete this project smoothly.? At the moment they have a layer3 switch and would like to do them selves rather than doing config changes from ISP side
regards
EXG
I am asking this question on behalf of our client
They have 2 offices (HO and a branch office) and are currently using Class 'C' external IP range for all their PCs and servers (They dont seem to know the reason why they are using external IP range) (220.110.0.1 to 220.110.0.100 SNM : 255.255.255.0) for HO and 220.110.0.101 to 220.110.0.200, SNM: 255.255.255.0) for their branch office. (the two sites are connected using fibre connection)
The DC is Windows 2000 advanced server. All servers are assigned Static IP and based in HO. DHCP scope is used to automate the IP Addressing in client side. DHCP and DNS services are running.on DC. A exchange server is running for email purpose. HO servers includes domain controllers, PC, Teklogix,Hand Punch Machine,cameras & printers.As their network is expanding, they want to get more IP address (atleast another 254 addresses)
AS they are 24 x 7 hrs operational, they would like to accomplish a solution with minimum down time and that gives them Atleast another 254 IP address. Could some one explain in details what needs to be done to complete this project smoothly.? At the moment they have a layer3 switch and would like to do them selves rather than doing config changes from ISP side
regards
EXG
Oh god. You have nightmare on your hands. Without changing anything, they are going to need to put in a router and create a new internal class C segregated from their current network and then route that back to the current network. Now, that said, smack your client upside the head and propose that they Rebuild the entire network using internal address space and then get rid of the Full Class C for the External range.
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He mentioned that they do have Exchange, so there is an Internet connection which is the scary part. This means that the Defualt gateways and any static routes would need to be changed as well as the firewall/possible NAT configurations (please tell me there is a firewall). You plan is sound, but as far as the static addresses go for PCs and Servers (exception Active Directory Domain controllers -- if any) would be to Register the MAC Addresses in DHCP as reservations that never Expire and change all the servers to DHCP. This keeps the addresses centralized in a nice database for management and allows for easy moving/re-IP of the systems. I know a lot of people frown on using DHCP for servers but it works great, just not your AD boxes or clusters.... Just set them manually and still put the addresses in DHCP.
ASKER
I haven't had the full information so nothing to blame the expert. I handed over the suggestions to my client and they will decide what needs to be done.