BT Broadband - Static IPs

Ironic Namesake

Ironic Namesake

Ironic Namesake

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Joined
18 Oct 2002
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Kuala Lumpur, Malaysia
I've just got a block of static IP addresses for our office, I've been given a block of 8 :

You've ordered a range of Static IP addresses, which contains 8 addresses from ***.**.**.185 to ***.**.**.189. Three of these are reserved:

* network address: ***.**.**.184
* router/Hub address: ***.**.**.190
* subnet mask address if you have 5 Static IP addresses: 255.255.255.248
* subnet mask address if you have 13 Static IP addresses: 255.255.255.240

I've never used Static IPs , so not sure how I go about setting these up/assigning these to a machine? I spoke to BT and they just told me they don't give any support on static IPs , he was addament that the router would still remain wit a dynamic IP, doesn't that defeat the point?
 
I've tried setting a static IP on the router but it still seems to get assigend a dynamic .

How do I go about assigning these and setting up the router?

I'm not too clued up on networking :p
 
We don't have anyone that can do it unfortunately - I'm the only one who even knows how to access the router setup :p
I'm sure I'll be able to figure this out - the only things I'm really confusd by are these WAN settings in the router (I've never had to change them before, as was always dynamipc IP before) :

1. IP Address (here I used this : router/Hub address: ***.**.**.190)
2. Subnet Mask (here I used this : subnet mask address if you have 5 Static IP addresses: 255.255.255.248)
3. Default Gateway (here I don't know what to use)

I only really need one system with a static IP now , so I used :
1. IP address (used one of the 5 IPs in the range)
2. Subnet mask (same as above 255.255.255.248)
3. Gateway (here I used 192.168.100.2, internal IP of router)

Does that look about right? When I sue those settings the internet on the PC I configured doesn't work :p so I guess I've gone wrong somewhere.
 
Skidilliplop said:
You have to do a lot more than just add the IPs to machines and the router. first of all you need a router tha can support routing without NAT properly or supports 1:1 NAT pools. Something like a Cisco 877.

Have you configured NAT and static routing before?
Click to expand...

We're using a standard Belkn router, so no idea if it supports this.
I thought it was fairly simple to have a static IP :o
 
Last edited:
JonnyT said:
Ah, takes me back to when I was figuring out how subnetting worked!

Basically the network address (x.x.x.184) is the address for your block & is not usable.
The gateway (x.x.x.190) is the router at the ISP & is unusable.
Therefore out of the 8 static IPs provided by your ISP, only 5 are usable.

So:

Use one of x.x.x.185, 186,187,188 or 189 as the IP Address
255.255.255.248 as the Mask
x.x.x.190 as the Gateway

Use the DNS provided by your ISP

& you should be in business!
Click to expand...

Cheers will give that a go ... those settings for the router or PC?
 
We only actually need one static IP, but BT gave us a block of 5! It is to connect to a database server on our network - to update stock records/order details onto an ecommerce website

We have around 8 PCs in the office, but only one need a static IP - so I guess if we just had a static IP on the router we can forward the port to the database server and that's it?
 
bremen1874 said:
It would appear that BT have done their normal up-selling/miss-selling.

I found the same problem at an accountants when I went in to sort out their problems. BT just asked them how many PCs they had and then sold them an expensive block of IPs to match. By the time I got there the damage was done and they had to wait until the contract expired before they could drop back to the single static IP they actually needed.

From memory if the router was left to pick up an IP via DHCP it was assigned an dynamic address rather than picking up one of the assigned static IPs. I think I just configured one of the assigned addresses (not the first) as a static address on the router and then used NAT.

Do you have a server? If you have it could make a difference to how the LAN needs to be configured.
Click to expand...

We were advised to get a Static IP , so just called BT and arranged this - not expensive at all (£5 per month :p )

We have a server which is SBS 2003 taking care of Exchange only, its not doing anything else.

We do have DynDNS set up on the router at the moment which seems to work fine, we were just told to get a static IP instead and not use this - not sure for the reason behind this.

I assumed if I had static IP, the router would just be always assigned the same IP when connected to ADSL, not thati t was this involved.

If I call BT and change down to just 1 static IP, would this make it fairly simple or still a pain to resolve?
 
Skidilliplop said:
Tell BT you want an ADSL line with a single static IP bound to it. They should be able to offer that. IF not, i'd cancel under the premis they tried to sell you something you didn't ask for or need and go with another ISP can can. Be for one can, as can Demon. Depending on where you are Star are also good for business.
Click to expand...

Ok will give that a go - I do have another ADSL line here, we just don't have a socket on that line yet , got it running straight into the phone system :p

That's with fast.co.uk
 
Will get the other ISP working shortly - I get annoyed with BT (we also had 5 days downtime recently with them :eek: )

We have SBS server running 1 NIC only , not 2 ISA is just part of premium I believe.

For SBS we're not needing a static IP at te moment, for RWW we use DynDNS, incoming mail uses POP3 connector and outgoing mail goes through an external SMTP server, this is working perfectly :)

I've actually spoken to the guys that requested static IP in the first place and they have informed it is OK to use DynDNS now :p wish I knew that before, would have saved me a lot of grief today :mad:

I think I really need to learn networking in a bit more detail - I can set simple networks up but things like this have me completely confused :o
 
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