Multiple static IP's?

Hey everyone,

I've been struggling with BT's (2700HGV) hardware for a while now and it's driven me to go and find my own.

The 2700HGV had some sort of QOS setup that stopped anyone from using the WHOLE network whilst someone else was downloading/uploading.

As soon as we replaced it with a stand alone ADSL modem, the problem disappeared. But so did our ability to have multiple static IP's.

The hardware purchased (although very cheap) supports multiple IP's over one VC. The problem is, it doesn't provide any documentation on how to implement it.

BT are being their usual useless selves and won't help me without me calling their chargable team, despite them admitting their hardware has failed and offering us £80 to find a suitable replacement.

The ADSL modem is a generic one (http://www.maplin.co.uk/Module.aspx?ModuleNo=222202) and is used widely across other devices such as TP Link. Yes, i know, really cheap. But it apparently supports multiple WAN IP addresses.

Could any one provide any advice on how to set this up?

I've setup the ADSL modem to use DHCP to get the gateway IP from BT and then I enabled the multiple IP address NAT setup, which asks me to map the internal LAN IP to the external WAN IP.

The only one that actually works, is when I map my Netgear router to the gateway IP. When I try mapping the devices that require a public static IP, it simply does not connect to the internet.

Is this a NAT related issue?

I'd really appreciate anyone's help.

Regards

Gavin

Hi, I have my BT 2Wire 2700HGV setup for, static IP addresses 1 to 20, DHCP server 21 to 250, static IP addresses 251 to 254, everything works fine, I do not use QoS.

http://www.homenethelp.com/web/howto/static-ip-addre...

http://www.comptechdoc.org/independent/networking/gu...

http://en.wikipedia.org/wiki/Quality_of_service

Edited by deleted (Mon 26-Apr-10 17:21:08)

speaking generally, the WAN side of the router will get a public IP address via CHAP from the ISP. Out of the box it will give out local non-public IPs to the connected device.

To have static IPs on connected devices the first thing to do is to configure those devices to have the relevant IP.

The next thing is to tell them the IP of their default gateway ie the LAN side of the router. This will need to be given an external (public) IP address which conventionally is not the same as the WAN side, although some routers do run with the same LAN and WAN IP. IN some cases you can set an external IP on the LAN side as well as the internal, using an option provided for this scenario. I have a Netgear 834 working like that.

The thing you linked to is a router, BTW.

Hmmm... I've replied to both of your replies but none are showing on here?

Can you confirm you received my responses?

Cheers

Gavin

In reply to a post by gRoberts:

Hmmm... I've replied to both of your replies but none are showing on here?

Can you confirm you received my responses?

Cheers

Gavin

Hi Gavin, no reply to messages showing, try again.
You open the message you wish to make the reply to, then click Reply or Quote. Make your message, then click [Continue] and [Continue] job done.

no reply evident

In reply to a post by yarwell:

....The thing you linked to is a router, BTW.

To avoid any confusion, it's an ADSL router so the ADSL modem is integrated.

Strange, when I replied to a single post that one of you have written, it wouldn't work but if I click reply to my own original post, it works. Heh.

Anyway.

Yes, just to confirm, I have an ASDL Router and a standard Wireless Router (separate.)

BT have given me a block of 5 IP's. x.x.x.217/29 with a "management ip" of x.x.x.222

Am I right to assume that when assigning static IP to my devices the gateway IP is the x.x.x.222?

If that is so, would BT translate x.x.x.222 to my actual gateway that was assigned via DHCP?

Unfortunately, I only get about 30 mins every morning to play with it until someone turns up and needs the internet.

So... Suggestions? The device supports multiple public IP via NAT? It the allows you to map internal IP's to public IP's, like the 2700HGV. Although, I have a feeling that static routes are required and when I try to implement them, only the internal network (provided by the wireless router) to gateway (the DHCP IP supplied by BT) works.

BT refuse to supply any other device and also refuse to suggest any other device that would be suitable. My boss isn't happy with paying for hardware that really, he shouldn't have to because he's paying out of his backside for the hardware/service that doesn't work correctly.

Cheers everyone! I appreciate your input.

Gavin

Well i've had a play this morning...

I've setup the ADSL modem's DHCP to assign my static range. So my wireless router now has a static IP of x.x.x.218. The ADSL modem's IP is x.x.x.222.

With this, I was able to access one of the machines (smtp server) on x.x.x.217 external to the building but now that's stopped working.

As soon as I enable multiple IP mode, none of my network works. I assume this requires routing setup and I have no idea.

Any idea's on how I can progress?

Cheers

Have a look at PortForward for the general idea and then come back with any specific questions.

I can't port forward in this instance. We sound out newsletters from an internal mail server that must not use the ISP's assigned IP address (spam black lists etc)

Thanks though

Any idea's on how I can progress?

find a manual for the router. As it's not a common item some screenshots posted somewhere might help.

Note that the WAN side of a BT ADSL connection does not use DHCP (referring to it as such is confusing)

Also you didn't address my point of setting the external IPs on the client devices.

In reply to a post by gRoberts:

I can't port forward in this instance. We sound out newsletters from an internal mail server that must not use the ISP's assigned IP address (spam black lists etc)

Thanks though

In that case, you'll need independent hosting. A friend of mine is at the moment looking for a host for the same purpose. I'll let you know how he gets on.

Phill,

I have setup my devices that require the public IP to use the public IP they require. They how ever, do not report to the outside work that they are on that IP, instead they appear as if they are on the gateway IP (adsl modem.)

BT's multiple static IP setup requires the modem to connect via DHCP. This then leaves you with the whole block of static IP's to use. Other services require you to use one of your block to assign to the modem.

Some screenshots. I have tried to keep as much info in there as possible without exposing everuything:

http://img80.imageshack.us/i/65559390.png/
http://img171.imageshack.us/i/85011873.png/
http://img710.imageshack.us/i/41252338.png/
http://img59.imageshack.us/i/66523267.png/
http://img411.imageshack.us/i/95671573.png/
http://img718.imageshack.us/i/20194842.png/

Cheers

Gav

the modem does not use DHCP to connect to BT. It gets a dynamic IP via PPP negotiaiton, but that'a an aside.

They how ever, do not report to the outside work that they are on that IP, instead they appear as if they are on the gateway IP (adsl modem.)

should the setting at http://img718.imageshack.us/i/20194842.png/ not be "multiple IPs" ?

Hi, all I can find for the BT 2Wire 2700HGV to setup multiple static IP addresses from ISP.

http://support.2wire.com/?page=view&article=126&text...

If you cannot get the 2Wire to work purchase the 3Com 3CRWDR101A-75 or 3Com 3CRWDR100A-72 router on eBay, bid up to £30/£20 these routers are a cinch to setup multiple static IP addresses supplied by your ISP.

http://cgi.ebay.co.uk/3COM-OfficeConnect-ADSL-Wirele...

http://cgi.ebay.co.uk/ADSL-3Com-wireless-router-/150...

http://shop.ebay.co.uk/?_from=R40&_trksid=m570&_nkw=...

The 2700HGV did work with multiple IP's. That wasn't the issue.

The 2700HGV caused the internal network to favour one LAN IP when it came to traffic shaping. So if I were downloading or uploading a file, it would stop ANYONE (including me) from accessing the network.

This meant that I could not access the 2700HGV's setup, internal servers or the internet. If I were to stop the download/upload, everything would work again.

We have been sent out three seperate devices all with the same issue and BT refuse to acknowledge or support the issue.

I'll take a look at those ebay links, there are some at a small price, so it may be worth a try.

cheers

When I enable that setting, I have to assign the wireless router to the gateway IP (0.0.0.0) for the internet to work on my normal internal network.

But then... I lose all internet connectivity on the devices connected that require an external static IP? (Can't ping google.com or it's IP)

Maybes this is where I am going wrong?

Cheers

Gavin

Are you saying the IP address of your router is 0.0.0.0? I believe you should not be using that address. Try changing the router to a more standard address such as 192.168.0.1.

Sorry I should have explained. In the multiple IP settings 0.0.0.0 refers to the WAN Modem's ip, beign the one that BT assigned me.

Cheers

In reply to a post by gRoberts:

The 2700HGV did work with multiple IP's. That wasn't the issue.

The 2700HGV caused the internal network to favour one LAN IP when it came to traffic shaping. So if I were downloading or uploading a file, it would stop ANYONE (including me) from accessing the network.

This meant that I could not access the 2700HGV's setup, internal servers or the internet. If I were to stop the download/upload, everything would work again.

We have been sent out three seperate devices all with the same issue and BT refuse to acknowledge or support the issue.

I'll take a look at those ebay links, there are some at a small price, so it may be worth a try.

cheers

Hi Gavin, you do not need that Maplin TP Link thingy router. Get the 3Com OfficeConnect 3CRWDR100A-72 ADSL 2/2+ wireless router, a bargain for £15 with P&P. You will be amazed the GUI looks expensive and is well thought out for ease of use to configure up to eight static IP addresses supplied by your ISP.

http://cgi.ebay.co.uk/ADSL-3Com-wireless-router-/150...

http://www.3com.com/products/en_US/result.jsp?select...

I'm watching a few on ebay now.

Thanks

In reply to a post by gRoberts:

I'm watching a few on ebay now.

Thanks

Hi Gavin, the spec for the current 3Com OfficeConnect 3CRWDR101A-75 ADSL 2/2+ wireless router.

http://www.3com.com/prod/en_UK_EMEA/detail.jsp?tab=f...

The main difference between the earlier 3CRWDR100A-72 it only has WPA wireless security and the current 3CRWDR101A-75 has WPA2.

Heck, I bought the 3CRWDR101A-75 for WPA2 wireless security and found WPA2 incompatible on my network, have gone back to WPA.

Edited by deleted (Tue 27-Apr-10 15:50:53)

put the wireless router into access point mode (if possible) and life will be simpler. That way you only have one router in the system, not two.

Well I got a -72 as suggested... Would you be in the position to provide a little help on setting it up?

I'm hoping it will be straight forward although these things never are.

Cheers

In reply to a post by gRoberts:

Well I got a -72 as suggested... Would you be in the position to provide a little help on setting it up?

I'm hoping it will be straight forward although these things never are.

Cheers

Hi Gavin, will help you with configuring the 3Com 3CRWDR100A-72 router, the firmware is the best I have seen for being easy to understand and configure.

It has 8 ATM PVCs already made out at Internet Settings screen used to configure the parameters for your Static IP addresses supplied by your ISP for the DSL connection. Click on Edit to set the detailed settings.

QoS Class: ATM QoS classes including CBR (Constant Bit Rate), UBR (Unspecified Bit Rate) and VBR (Variable Bit Rate).

QoS Parameters: PCR (Peak Cell Rate), SCR (Sustainable Cell Rate) and MBS (Maximum Burst Size) are configurable.

Useful info on how to configure the Virtual Servers for Port Forwarding.

http://www.thinkbroadband.com/hardware/reviews/39-3c...

Port forwarding is the same as the 3Com 3CRWDR101A-75 router.
Real Easy Port Forwarding instructions. (here)

Wireless Antenna
The wireless antenna should be placed in a �V� position when initially installed for maximum effect.

When you setup the router make sure you select the correct region it should give you 13 wireless channels. Select wireless mode (11g only) and one of the non-overlapping channels.

Non � Overlapping channels, 4 in European nations: 1. 5. 9. 13 and I use the faster 802.11g standard only.

http://en.wikipedia.org/wiki/IEEE_802.11g-2003

Edited by deleted (Thu 06-May-10 17:54:32)