Configuring a BT Home Hub to Reduce Disconnections

Hi, I have had disconnections over the last 2 days while I was playing poker. This has caused me a great deal of inconvenience.
I've been in touch with Pokerstars and have sent them log files, and they seem to believe that they have found the issue, and have given me instructions on how to solve it.
Firstly, is it possible for me to implement these instructions into a BT Home Hub 3? Are there instructions anywhere for how to go about doing this?
And also, I have had ongoing internet problems over the last year, which involved dropping connection when the phone rang but even sometimes just randomly, however, these problems have finally been solved, temporarily at least.
I am led to believe that implementing these instructions will not affect the work that BT has done to solve our dropping connection. Is this true? When these Pokerstars cutouts are happening I can still open my browser and the Hub still shows the internet as being on.
Cheers in advance, Tom.
Hello Tom,
Thank you for contacting PokerStars.
The Network Status Report (NSR) you provided verifies this issue stems from a local problem and not from our site. This report runs a ping trace to various websites around the world to test your connection in general.
Please allow us a moment to break down that report and demonstrate. The set of traces listed below are ran to Australia, Cambridge (UK), US West and East coasts, (US) Manx Telecom (IOM), and the Pokerstars.com Website (IOM). With the exception of the PokerStars website, none of the other servers belong to PokerStars nor are they related to your connection to our servers. We use these sites to test your overall connection and path of data communication. We have only included small snippets of each trace and you may review the file you sent to review the entire path.
[2012/09/05 21:39:40]
Host 210.247.216.161
1 --- [ 192.168.1.254], Pings=7 , Quality=55 , Lost=2
Host 67.195.160.76
1 --- [ 192.168.1.254], Pings=5 , Quality=25 , Lost=3
Host 128.112.132.86
1 --- [ 192.168.1.254], Pings=7 , Quality=55 , Lost=2
Host 164.67.183.186
1 --- [ 192.168.1.254], Pings=5 , Quality=25 , Lost=3
Host 80.65.254.253
1 --- [ 192.168.1.254], Pings=9 , Quality=80 , Lost=1
Host 77.87.181.63
1 --- [ 192.168.1.254], Pings=3 , Quality=0 , Lost=5
As you can see the traces fail starting at hop # 1 for all sites traced.
Hop #1 belongs to your router, which means that it may be blocking our software from connecting properly, as sometimes the default firewall that routers have can interfere with our client’s connection. Most routers are fine pieces of equipment, but sometimes they need to be updated and configured for online gaming software.
Please set the trigger (automatic port forwarding) for the following ports: 26002, 443 and 22.
Using a Web browser, bring up your router's configuration page. By default, the URL is 192.168.0.1 (or similar), the user name is "admin", and the password is blank. Once you have accessed the router configuration page follow these instructions as a guideline (exact instructions may vary depending on router model).
1. Click the Advanced tab
2. Click the Applications button
3. Click the Enable button
4. After Name, enter "PokerStars" or anything you wish to label this setting
5. After Trigger Port, enter 26002
6. After Trigger Type, choose TCP
7. After Public Port, enter 26002
8. After Public Type, choose TCP
9. Click "Apply"
10. Repeat these instructions for ports 443 and 22
Some players have also reduced the Maximum Transmission Unit (MTU) setting from 1,500 to 1,200 with excellent results. We recommend you to use the value of 1,312 as theoretically speaking it will be compatible with most equipment running on 53 byte packet sizes.
Updating the firmware on the router may also stabilize the connection, but if it does not then you may need to acquire a different model or a different brand of router, or work without a router (running your cable/DSL modem directly to your computer). As a router provides some minimal natural firewall capabilities, we do recommend using a router.
To upgrade your firmware, please contact the router vendor or manufacturer.
We suggest using a wired connection from your computer to your router as wireless connections (WiFi) are generally speaking less stable. If you use a wireless connection, please check to see if your router has a Turbo or G option and turn it off. For example, in the wireless option of your router's configuration page, you may find a field with 'B/M/G Mixed' which can be changed to 'B/M Mixed'. This will disable the G option. Some "Super-G" or "Super-G Turbo" routers have a problem running in Turbo mode. Apparently they use "channel hopping" to bond multiple channels in support of this feature, but it is highly susceptible to interference from other 2.4GHz wireless networks and devices. Turning off the channel hopping feature (or the Super-G/Super-G Turbo mode) of such devices will turn them into a standard 802.11g wireless device and may make them more stable. Please contact your router vendor or router documentation for more assistance with turning off these features of your router.
We hope this information is useful to you, please let us know if you need anything else.
Regards,
Ricardo A.
PokerStars Technical Specialist"

You just need to forward the port.
Please see Port forwarding problems
Look at the example for VPN, and simply call it something else, and alter the port number to 26002.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Similar Messages

Home hub 3 keeps disconnecting ethernet device

I have a home hub 3 and a iomega home media network hard drive which is connected via one of the ethernet ports on the home hub. On my old Home hub the device connected fine however on my new home hub 3 it connected at first for a day and then disconnected and will not connect again. I menetioned this to the infinity engineer who surgetested I could have one of the older Hubs or it had faulty ethernet ports. I have tryed chaning the ethernet port, but when I look at the advanced settings of the hub and look at connected devices it reports not connected for the Iomega drive. How do I log a fault call to get a replacement hub, or can I force a firmware update. mine has version V100R001C01B031SP09_L_B.
Please tell me how I can log this online so I do not have to ring India again!
Yours
Andrew

No problem about the delay in replying, as you put my name in the text of you message, I got an automatic alert
Yes, the problem with the Ethernet ports is in this thread.
http://community.bt.com/t5/BB-Speed-Connection-Issues/HomeHub-3-LAN-speeds-only-10Mb/m-p/238589/high...
The long term answer would be to connect your own Ethernet switch to the GigE port, and not to use the other ports.
I am not sure if the HH3 issue will be solved, as I suspect its a hardware design issue.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

BT Infinity Home Hub 5 keeps disconnecting

We have the Home Hub 5 broadband for few months. We have been experiencing the regular (10-20) disconnections per day, without the internet connecting back automatically. We need to go back to networks and select connect (or sometimes disconnect, as the message is that the connection is limited) and then try to connect again. Despite having selected connect automatically on many occassions, that is never implemented. Sometimes, when the connection drops the router light changes to orange colour (for few seconds) and then get blue again, sometimes it seems to stay blue throughout.

Distance Selling regulations alone won't be of much use unless it has been less than 7 days since you received the HH5. If it is less than 7 days, contact them and inform that you wish to return the item - you do not need to give a reason.
If there is a fault then your contract is with whoever you purchased the items from. If BT directly then it is them you'll need to speak to, however I "believe" you have to give them "reasonable" time/chance to sovle the issue before a refund can be demanded.

Configure Home Hub 5 as modem only?

Yesterday I received my BT Home Hub 5, plugged it in and it worked on my existing 4mb ADSL broadband connection. On Monday I will be switched to 76mb Infinity 2, so what's the problem?
I have a lot of IT kit as I run an IT business and often work from home. Before Chistmas I purchased a Netgear DGN4000-100UKS N750 Dual Band Wireless ADSL2+ Modem Router to accompany my existing Netgear R7000 Nighthawk. The Nighthawk is setup downstairs and acts as a wireless router only, with the new DGN4000 being my modem + wireless router upstairs. Both share the same SSID's so that when wandering around the house, there is full wifi coverage with devices seemlessly switching between them. There are lots of useful features on both routers, many of which I use to control access, including IP address reservation as I need to ensure some of my kit ALWAYS gets the same IP address.
Needless to say I've invested a lot of time and effort getting my home network setup and it works very well.
Enter the BT Home Hub 5. This is clearly aimed at the general public and is a simple "plug and play" device, with barely any additional features. It was my hope to continue using the Netgear DGN4000 as my modem router when I got BT Infinity, but I only realised yesterday (after finally performing some research) that BT Infinity uses VDSL and the DGN4000 is ADSL2+ compatible, so the modem will not work from Monday!
Never mind, I thought, I will simply configure the BT Home Hub 5 to be a modem only and continue to use the powerful routing features of the DGN4000, however, this doesn't seem to be possible.
Has anyone any experience of using the BT Home Hub 5 as a "modem only" despite not being able to switch off the router functionality? I can obviously switch off the wifi, but what about the cabled connections? I'm aware I can connect my DGN4000 to the Home Hub and my suspicion is that I could setup the IP addresses such that the DGN4000 is the gateway for all devices (as it is at the moment) and so will continue to issue IP addresses using DHCP.
If anyone has already done this or tried to do this I would appreciate a heads up. Is it possible? Does it work well? Am I wasting my time even trying and I should just purchase a decent VDSL compatible modem router that provides more than basic settings?

Having spent most of today researching and "playing", I've now managed to get the HH5 to work alongside all my existing kit. Hopefully this should continue to be the case tomorrow when BT Infinity 2 is switched on at the cabinet.
To summerise, my existing setup includes two Netgear modem routers configured as follows:
- DGND4000 - This is used as the modem and a wireless router (dual band). It is also the DHCP server and has the IP address reservation table setup.
- Nighthawk R7000 - Configured as a dual band wireless access point, so NO modem or DHCP functionality. As part of the AP config, the Gateway IP address is set to that of the DGND4000, so any devices connecting to this router will be routed through to the DGND4000. The purpose of this second modem router is simply to give a greater range as a single wireless router will not cover the whole house.
For information, the IP range on the DGN4000 DHCP is set to use the 192.168.0.* subnet.
I tried various configurations, but any time both the DGND4000 and HH5 were included on the network none of the clients could get internet access. Even when the HH5 showed a blue light, indicating a successful internet connection, it appeared that the DGND4000 was still trying to get its own internet connection, probably because none of the config told the DGND4000 not to do this! Even connecting the HH5 into the WAN port of the DGND4000 didn't prevent the DHGND4000 from trying to get an internet connection, which surprised me (not sure why it should!). Whenever the DGND4000 couldn't get an internet connection, none of the clients connected to it could reach the internet - to be expected really! Of course, I also had to ensure the HH5 was on the same subnet (this was my thinking at the time). This wasn't too onerous, but required a direct connection to a laptop that wasn't on the network and that had a static IP address set to the default subnet provided on the HH5 (192.168.1.*). This was also required due to DHCP being turned off on the HH5.
Anyway, enough about the problems I encountered, what was the solution?
It's simple really and is thanks to the following article:
Setup a Second Wireles Router on Your Home Network
The title is a little misleading as in my network setup I already have two wireless routers and this is achieved by configuring one of them as an Access Point.
The trick to getting the HH5 to act as a modem is to put it in its own subnet and to then bridge between the two subnets identifying the HH5 as the WAN!
Here's some detail behind the configuration I performed:
HH5
Turn off both wifi bands
Turn off DHCP (probably not necessary, but I feel it is a cleaner solution)
Leave the IP range at the default (192.168.1.1 to 192.168.1.256). This is the first of the three options.
Leave the IP address as 192.168.1.254
Plug the HH5 into the mains and into the telephone point. The blue light should eventually be shown indicating it has an internet connection.
DGND4000
This Netgear modem router has "everything" switched on i.e. DHCP, modem, wifi.
Set the IP address to 192.168.0.1 Note: this is a differnet subnet to the HH5 i.e. it is 192.168.0 rather than 192.168.1
The IP range for DHCP is set to 192.168.0.3 to 192.168.0.256. This is how it has always been set for my network. Note: the start IP address of 192.168.0.3 allows for 192.168.0.1 and 192.168.0.2 to be used for my two Netgear modem routers.
Now the clever bit:
Within the Internet settings, change the "Does your internet connection require a login?" to No. This had always been set to Yes on the DGND4000 along with the required account name and password. Setting it to No, removes the password field and provides additional fields to allow LAN details to be entered:
Set the Internet IP Addres as follows:
Use Static IP address
IP Address: 192.168.1.253 (this can be any IP address in the 192.168.1.* subnet as long as it isn't the same as the HH5! I chose a high address, not that it matters as none of my clients are on this subnet anyway). This essentially assigns a local IP address to your Internet connection, which will be used by the LAN to access the internet. Usually, the Internet IP address would be assigned by your ISP (either static or dynamic).
Gateway IP Address: 192.168.1.254 (this MUST be the IP address of the HH5)
Domain Name Server (DNS) Address
Use These DNS Servers
Primary DNS: 192.168.1.254 (again, this MUST be the IP address of the HH5)
Now use a network cable to connect the HH5 to the DGND4000. On the DGND4000 plug the cable into the WAN socket (NOT one of the 4 LAN sockets). Plug the other end of the cable into the LAN socket on the HH5 (NOT the WAN socket!).
Turn on the DGND4000 and hey presto internet access without a telephone cable being connected to it! In terms of lights on the front panel of the DGND4000 the only difference is that the DSL light is no longer on. The internet light should be green (it is getting internet access through the HH5 via the WAN socket) and all other lights are unafected by the config.
I hope this information proves to be useful to someone trying to incorporate the HH5 into an existing network and using it as a "modem only".

Home Hub Username and password

Hi,
I was trying to access the basic configuration of my home hub in the Hub Manager and I was asked to enter my username and password. I have no idea what my user name is and have tried using the SN on the back of my hub but alas it does not work. Can you help please.

Hello headers2,
Don't worry - the factory reset really won't make things worse. The Homehub is configured to connect to broadband out of the box. So long as you've never fiddled with Wifi settings, then you could factory reset it. You would have to re-register your Hub phones afterwards.
Here is how to do it:
http://bt.custhelp.com/app/answers/detail/a_id/11386/~/how-do-i-reset-my-bt-home-hub-to-its-factory-...
Hub phone register:
http://bt.custhelp.com/app/answers/detail/a_id/10281/kw/register%20hub%20phone/c/345,354,380
Hope this helps,

Problem using static IPs on PCs with BT Home Hub 2

Hi
Have today just been upgraded to BT Infinity using the new VDSL modem and BT Home Hub.
I have a server running Ubuntu and several PCs and laptops, mostly connected via ethernet.
Prior to the upgrade I was using the 10.x.x.x range for the network with most of the devices using static IPs. However, it seems that the 10.* range is not acceptable when configuring the IP address and Subnet mask on the Home Hub. Great! .... Not.
Anyway, so decided to switch to using the 192.168.x.x range (subnet 255.255.0.0). Have configured the router as .1.1 and my server as .3.1. However, the server is unable to ping virtually all sites on the Internet (I say all as some times www.google.com works ok.)
Also all PCs will not work with static IP configurations (using IPs like .4.1, .5.1, etc.). The only way I can get the PCs and laptops to work is to use the DHCP setting (Obtain IP from server). This is configured on the home hub as .100.1 - .100.254
I really need the PCs and laptops to work with static IPs.
Am I missing something or is this a known problem with the Home Hub? It seems that the Home Hub will only connect to the Internet if it is configured to grab an IP from DHCP on the Home Hub.
Thanks for any help in advance.
Sarah

Ok. I think I have found a work-around for this, which shows that the problem is the BT home hub.
Delete all the devices showing on the hub (in the Advnaced Settings).
Configure each PC with a static IP address with the required IP. Reboot the PC. After logging in, go to the router and enter the device showing in the home hub and set the device so that it always uses the IP address (as it will have registered the IP - even though it is outside the DHCP range). Save this. Go back to the PC and reconfigure the network settings to use DHCP and reboot the PC. The PC will then continue to re-use the original IP address, which allows this to be used as a static IP address, thus allowing it to be used for apps that need to have a fixed IP.
Repeat for each PC.
Although this works I have a feeling that the IPs used may only be retained as long as the home hub is not rebooted.
It shows that it is possible to use "static" IPs outside the 192.168.1.* range and outside the DHCP range (I was using 192.168.100.* and it worked ok). Therefore there is no reason why this should not work as static IPs, other than that the firmware on the home hub does not allow it. What rubbish.
I cannot wait until some of the other manufacturers (like Linksys, Netgear, Belkin) jump on the VDSL bandwagon and produce compatiable routers.
Regards
Sarah

Keep having to reboot home hub.

I was wondering if anybody else had encountered this problem.
I've had infinity for a couple of years now and bar some teething issues the service has been flawless.
Last month I "upgraded" to Infinity2 and have been encountering problems where bandwidth drops and downloading large files takes ages. A quick reboot of the home hub and I'm back up to full speed.
E.G. An 800mb iTunes app update was going to take 45minutes to download but 2 minutes after the hub reboot and a HD Apple TV film was going to be ready to view in 2 hours pre hub reboot and was available to view straight away afterwards.
This never happened with infinity1... any ideas?

There are other posts on this where users are reporting their speed dropping on wired connections to as low as 0.5 mbps and either a reboot of the Home Hub or pressing disconnect/connect in the Hub settings (or pulling out the DSL cable and putting it back in) solves the issue for 12 hours and then it slows donw again.
I've written a poweshell script to test the download speeds and can confirm it's EXACTLY 12 hours after a reboot/disconnect-connect when the issue comes back.

Regular disconnection from my Home Hub 2.0 on Infi...

For the last year I've been getting regularly disconnected on the wireless from my Home Hub 2.0 router on Infinity - and have to reset to get the connection back (this happens to all phones and laptops connected) - this is despite the blue lights remaining 'on' on the hub. It's now getting more and more frequent (5 times per day) - making skype calling a challenge. Also the line speed degrades and a reset brings this back up. I contacted the help line a few months ago but failed to fully resolve this. In my mind the home hub is faulty and I need a new one - but seems v difficult to get that to actually happen.
I'm on the verge of cancelling and going to another provider now I'm out of contract - any advice?

From the memory, (which is not very good at the best of times), the Home Hub 2 is not infinity compatible. The router needs to be able to support PPoE on a WAN port. The HH2 does not have a WAN port.
Other than that there are lots of threads on here re: unreliable wireless connections. Too many to list all the definitive suggestions. A search should help.
As to BT replacing the router, BT may replace it if it is deemed faulty within the warranty period. If the router is over a year old it will be out of warranty and as it was purchased by you as part of the contract it will be your problem to sort out.
Many on here have replaced or not even used the supplied router. As long as the replacement supports PPoE and has a WAN port, (i.e. Cable router), you should be OK. There as also a growing number of routers that are VDSL capable so it may be a consideration to replace the modem as well. With regards to router replacement this thread may be of interest.
http://community.bt.com/t5/BT-Infinity/List-of-Routers-to-replace-Home-Hub-3/m-p/298203/highlight/tr...
Dave

Devices Disconnecting From Home Hub 5

Had this problem ever since changeing to the home hub 5 / infinity a couple of weeks ago.
Devices such as my laptop and the sky wireless adapter (for getting on demand etc) keep disconnecting from the home hub and i keep having to reconnect them. Its really annoying, the sky wireless adapter disconnect every couple of days and i have to re enter the wireless key.
Can anyone help?
Thanks

Did you turn of smart setup. http://bt.custhelp.com/app/answers/detail/a_id/44328/~/switching-smart-setup-on-and-off-on-the-bt-ho...
Did you split the networks. http://bt.custhelp.com/app/answers/detail/a_id/44798/related/1
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Home Hub continually disconnecting

Hi,
My home hub continually disconnects, something like every hour or so it flashes amber then reconnects after 30 secs or so. However due to the nature of my work I really cannot afford any disconnections. Here are my line stats, anyone got any ideas?
Line state
Connected
Connection time
0 days, 00:03:28
Downstream
4,792 Kbps
Upstream
867 Kbps
ADSL Settings
VPI/VCI
0/38
Type
PPPoA
Modulation
G.992.3 Annex A
Latency type
Interleaved
Noise margin (Down/Up)
9.0 dB / 8.9 dB
Line attenuation (Down/Up)
45.6 dB / 27.9 dB
Output power (Down/Up)
7.2 dBm / 1.3 dBm
Loss of Framing (Local/Remote)
0 / 0
Loss of Signal (Local/Remote)
0 / 0
Loss of Power (Local/Remote)
0 / 0
FEC Errors (Down/Up)
1 / 0
CRC Errors (Down/Up)
0 / 57
HEC Errors (Down/Up)
7 / 0
Error Seconds (Local/Remote)
0 / 0

Hi,
I can't really connect to the master socket, whichever bright spark built the place (it's brand new) put the master socket in the utility cupboard which has 0 floor space because of the washing machine, and I don't think sitting the home hub on top of a washing machine is a great idea?
I'm connected to an extension socket in the living room.
Download speedachieved during the test was - 3618 Kbps
For your connection, the acceptable range of speedsis 1200-4000 Kbps.
Additional Information:
Your DSL Connection Rate :6584 Kbps(DOWN-STREAM), 888 Kbps(UP-STREAM)
IP Profile for your line is - 4000 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 3.73:16.68:79.59 (SBE:NBEBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.
The results of this test will vary depending on the way your ISP has decided to use these traffic classes.
Upload speed achieved during the test was - 722 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 888 Kbps

Configuring BT Home Hub

Can anyone tell me the best way to configure a TC with a BT Home Hub.
Presently I have wireless disabled on the BTHH. The BTHH is set as DHCP server and the TC is set to bridge mode. Currently this prevents me from having a public wireless network.
Is this the best (or only) way to configure the two devices? Is it possible to disable the DHCP server on the BTHH and enable it on the TC? If so, what else must I do to ensure that the TC and BTHH communicate with each other?

Richard, Welcome to the discussion area!
Is it possible to disable the DHCP server on the BTHH and enable it on the TC?
Sure.
If so, what else must I do to ensure that the TC and BTHH communicate with each other?
Nothing. But you wouldn't want any devices to connect directly to the BT home hub.

PC keeps disconnecting from home hub.

Got a very annoying problem, for some reason my computer keeps disconnecting from my home hub. Its got much worse recently and I have no clue what is doing it. Sometimes it can stay disconnected for a couple of hours and when you finally get the connection back it says it cant connect to the Internet. Also my network adaptor cant find my hub but it will find my neighbours even though the hub is just down the stairs from my PC. Signal it good-excellent. There are 2 other computers using the same hub but the are totally unaffected by this.
Would really appreciate some help.

from your comments I assume you are using wifi
you can try downloading inssider3 (istumbler if MAC) and then run it. This will show the broadcasting networks round about you and their channels including your own. If you then enter your router and change your wireless channel to a free or less congested channel.
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If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

Home Hub disconnects when Iomega NAS connected

I have been struggling to set up an Iomega iconnect on my HH.
Originally, I had an old style white V1 hub. The iconnect connected wirelessly to the hub but would disconnect within a few hours. The broadband connection was not affected.
I also set up the dyndns but could not access the drive over the internet.
I thought that a new V2 hub might solve the problem so obtained one of e-bay and installed it.
It is on Software version 8.1.H.J (Type A).
Again I set up port forwarding.
After about an hour, the phone pings and the broadband drops out. It is out for a very short time then reconnects.
If I disconnect the Iomega the problem disappears.
Any help appreciated.

On thing that springs to mind - a faulty Iomega. I've got a WD NAS attached and it doesn't miss a beat - although I don't try and access it over the internet.

Home hub keeps disconnecting and connecting to BTW...

This only appears to be happeneing on my windows 7 desktop computer. None of my other deviices have a problem. However with the desktop every so often the connection will be dropped from BTHub3 and it will instead try to connect to BTWiFi. I have no idea why. Can anyone please help.

There is a guide to wireless connection issues here.
Wireless problems and things you can try, to resolve them
The other issue about BT wifi is covered here.
My computer connects to BT Wi-fi, Openzone or BT FON instead of my BT Home Hub
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Home hub 3 disconnecting from ADSL

I can't find the solution to this anywhere so here goes:
I have a home hub 3. All devices are wired to it via a simple unmanaged Ethernet switch except for 3 android devices that occasionally connect wirelessly (most of the time they are off, so nothing really to do with this problem). The Ethernet switch connects to one of the home hub RJ45 ports. Nothing else is connected to the hub on its RJ45 ports.
There are 2 connections into the Ethernet switch. One goes off to other Ethernet switches where up to 4 PCs are connected (W7, Vista & 2 XP machines). The other connection goes off to a series of unmanaged Ethernet switches where there are some 30 IP cameras (again, all wired, and would be out of range for wireless connection to the hub anyway). All cameras have fixed LAN IP addresses in the range 192.168.1.200 upwards. The hub's DHCP has been set to an upper limit of 192.168.1.199. The PCs all use DHCP getting given LAN addresses of 192.168.1.64 upwards.
The cameras do not stream video or send pictures outside the LAN. All cameras are capable of syncing with one or more web timeservers, but that functionality is turned off on each camera. The only activity I have seen (using Wireshark) is the occasional ARP request from cameras which is broadcast (to 255.255.255.255). As Wireshark is running on one of the PCs I can't confirm that nothing else is going from a camera to the hub (as I can only see packets that are broadcast or going to/from that PC), but can't imagine what would be.
When all the cameras are connected the broadband crashes (yellow light on). Unplug the ethernet line that goes to the cameras from the Ethernet switch (the final device on the LAN before the hub) and, after a while, broadband is back again. This happens whether or not the cameras are streaming video or sending pictures. I'm also fairly sure (haven't looked at it recently) that if I isolate some of the cameras (e.g. leaving only 15 connected) the broadband stays connected even when I route the cameras through the hub's Ethernet ports and get video from several of them at once.
Has ANYONE got any ideas what could be going on? Or how to fix the problem...a new hub 3 has been reqested from BT but it won't arrive for several weeks - don't bother to ask why as that's complicated too:-)...don't think a new hub 3 will fix things. I would go for another router but until I can understand what the problem really is I could simply be wasting monay as that might not work either!
Solved!
Go to Solution.

After trying lots of ideas, I think I now have a solution and some idea of what may be causing the problem. I hope this explanation may be of help to anyone else facing a similar problem.
As mentioned in my original post the HH3 drops its ADSL conection when about 30 IP cameras (or fewer) are connected - that happens whether or not any of them are streaming video. None of the cameras are sending video over the ADSL connection. All the cameras are connected via daisychained ethernet switches to a single ethernet cable running back to the HH3. The ADSL connection would drop sometime within a few seconds to a few minutes.
What I didn't mention in my original post is that all the cameras and ethernet switches are powered from a completely separate mains supply.
In desparation and doing some lateral thinking I began to wonder if electrial noise was being introduced to the HH3 and if that was causing the problem. All the "home" PCs are connected to the hub via 85mbps HomePlugs. Searching for optoisolaters that would eliminate electrical noise I realised that the HomePlugs probably contained such devices (or some equivalent). So, since I had a spare one, I plugged the "camera" ethernet cable into the spare HomePlug and plugged the HomePlug into the mains.
It has solved the problem as far as I can see - no dropouts on the ADSL now for over an hour and several of the cameras streaming video.
I hope this may help someone in the future!

Configuring a BT Home Hub to Reduce Disconnections

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