Interfering with next doors broadband connection?

Hi,

I know this sounds daft and probably is, but can two adjoining neighbours
broadband connections interfere with each other?

The reason I ask is because I had a phonecall today from a mate who is
convinced his next door neighbours constant downloading is causing his speed
to fall on his connection.... even though each of them use a different ISP.
They both share the the same telegraph pole and exchange, but they both have
different ISPs.

Could the fact that his neighbour is constantly downloading from P2P (flat
out) have much effect on the independant connection next door?

Thanks
I look forward to any comments.
John

John wrote:
> Hi,
>
> I know this sounds daft and probably is, but can two adjoining
> neighbours broadband connections interfere with each other?
>
> The reason I ask is because I had a phonecall today from a mate who
> is convinced his next door neighbours constant downloading is
> causing his speed to fall on his connection.... even though each of
> them use a different ISP. They both share the the same telegraph
> pole and exchange, but they both have different ISPs.
>
> Could the fact that his neighbour is constantly downloading from
> P2P (flat out) have much effect on the independant connection next
> door?
>
> Thanks
> I look forward to any comments.
> John

Very little.....unless they're both using wifi & on the same
channel/frequencies which could cause problems for both of them..

John wrote:

> Hi,
>
> I know this sounds daft and probably is, but can two adjoining neighbours
> broadband connections interfere with each other?

Hi John,

No, not a daft question at all.

> The reason I ask is because I had a phonecall today from a mate who is
> convinced his next door neighbours constant downloading is causing his speed
> to fall on his connection.... even though each of them use a different ISP.
> They both share the the same telegraph pole and exchange, but they both have
> different ISPs.

> Could the fact that his neighbour is constantly downloading from P2P (flat
> out) have much effect on the independant connection next door?

Yes, anybody else on the exchange has the potential to have an small
effect on your friends speed. First their is the small amounts of
cross-talk; this will be higher in the evening when more connections are
active.
The DSLAM and switching will have more to do in the evening. Lastly the
BT link from the DSLAM to the backbone will be more saturated.

It's very unlikely your friends neighbour is causing the problem unless
it's a crosstalk issue, it's more likely the cumulative effect of many
people using the available switching and bandwidth.
However we are talking small amounts here so the most likely issue is
that it's your friends ISP that is busy.

In an earlier contribution to this discussion,
John <(E-Mail Removed)> wrote:

> Hi,
>
> I know this sounds daft and probably is, but can two adjoining
> neighbours broadband connections interfere with each other?
>
> The reason I ask is because I had a phonecall today from a mate who is
> convinced his next door neighbours constant downloading is causing
> his speed to fall on his connection.... even though each of them use
> a different ISP. They both share the the same telegraph pole and
> exchange, but they both have different ISPs.
>
> Could the fact that his neighbour is constantly downloading from P2P
> (flat out) have much effect on the independant connection next door?
>
> Thanks
> I look forward to any comments.
> John

It could if he has an unsecured wireless network, and the neighbour also
uses wireless. The neighbour may be (possibily inadvertently) connecting to
your mate's router rather than his own, and sapping the bandwidth. For
downloading purposes, the neighbour's PC won't care what ISP it's connected
to - although it might for sending emails.

If this *is* the problem, your mate has only himself to blame for not
securing his network.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

"Roger Mills" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> It could if he has an unsecured wireless network, and the neighbour also
> uses wireless. The neighbour may be (possibily inadvertently) connecting
to
> your mate's router rather than his own, and sapping the bandwidth. For
> downloading purposes, the neighbour's PC won't care what ISP it's
connected
> to - although it might for sending emails.
>
> If this *is* the problem, your mate has only himself to blame for not
> securing his network.
> --
> Cheers,
> Roger


Thanks for all the replies. No there is no wireless networks involved.
Both parties use a wired LAN.

Thanks again
John

"John" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi,
>
> I know this sounds daft and probably is, but can two adjoining neighbours
> broadband connections interfere with each other?
>
> The reason I ask is because I had a phonecall today from a mate who is
> convinced his next door neighbours constant downloading is causing his speed
> to fall on his connection.... even though each of them use a different ISP.
> They both share the the same telegraph pole and exchange, but they both have
> different ISPs.
>
> Could the fact that his neighbour is constantly downloading from P2P (flat
> out) have much effect on the independant connection next door?
>
> Thanks
> I look forward to any comments.
> John

It would help if we knew the mates ISP


T-L

"John" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
> "Roger Mills" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> It could if he has an unsecured wireless network, and the neighbour also
>> uses wireless. The neighbour may be (possibily inadvertently) connecting
> to
>> your mate's router rather than his own, and sapping the bandwidth. For
>> downloading purposes, the neighbour's PC won't care what ISP it's
> connected
>> to - although it might for sending emails.
>>
>> If this *is* the problem, your mate has only himself to blame for not
>> securing his network.
>> --
>> Cheers,
>> Roger
>
>
> Thanks for all the replies. No there is no wireless networks involved.
> Both parties use a wired LAN.
>
> Thanks again
> John
>
>
>
Show him to this newsgroup so we can ask him a few questions.

"John" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi,
>
> I know this sounds daft and probably is, but can two adjoining neighbours
> broadband connections interfere with each other?
>
> The reason I ask is because I had a phonecall today from a mate who is
> convinced his next door neighbours constant downloading is causing his
> speed
> to fall on his connection.... even though each of them use a different
> ISP.
> They both share the the same telegraph pole and exchange, but they both
> have
> different ISPs.
>
> Could the fact that his neighbour is constantly downloading from P2P (flat
> out) have much effect on the independant connection next door?

If he is the only one using P2P then there is little chance that he is
interfering unless the line is near the limits.
What are the noise levels for the line?

However if the neighbours P2P pushes the link between the exchange and BTs
central distribution network into 100+% used it will slow everyone down
(unless they are on LLU).
All users will start to lose packets and that will cause retransmits which
increases the load and increases the retransmits.. a nice vicious circle.
At this point TCP should start to back off in an attempt to help congestion.
P2P doesn't (greedy these P2P users) so TCP connections suffer at the
expense of P2P traffic.
You need to find who his ISP is and get him traffic managed along with all
the other P2P users. Just stopping one P2P user is hardly fair and is a stop
gap measure at best.
HTH.

"dennis@home" <(E-Mail Removed)> wrote in message
news:45addf3d$0$14956$(E-Mail Removed)...
>
> At this point TCP should start to back off in an attempt to help
> congestion.
> P2P doesn't (greedy these P2P users) so TCP connections suffer at the
> expense of P2P traffic.

Just out of interest - isn't P2P traffic carried over TCP then?

dennis@home wrote:

> You need to find who his ISP is and get him traffic managed along with all
> the other P2P users.

Talk about a nosey bloody neighbour!