Re: 2 phone lines each with adsl (ADSL performance degrades?)

On 12 May, 14:51, "Graham J" <gra...@xxxxxxxxxxxxxxxx> wrote:
"Ato_Zee" <ato_...@xxxxxxxxxxx> wrote in message

news:CMcOl.3239$Gj1.917@xxxxxxxxxxxxxxxx



On 12-May-2009, ianh <i...@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

here in deepest wales I have two adsl lines both 9.2km from the
exchange.. speed isnt great but we have some redundance and eventually
i will get to install a load shareing switch.

we use Idnet for one and BT Broadband for the second.

Will two different suppliers be optimal for load sharing?
Different routes/routers, different latency, two different
IP domains, etc.
Main advantage of two lines is redundency if one ISP
fails, an infrequent event. If there is a failur it is more
likely to be exchange localised, when all suffer the outage.

I have two separate lines into the premises, sharing the same dropwire to a
junction on the pole at the corner of the garden.  Am 5.5km from exchange,
and about 1km of that is overhead.

I use two dirt cheap Edimax routers in bridge mode connecting to a Vigor
2910 router to achieve load balancing.  Primary reason for this is that the
Edimax routers achieve much better speeds than the modern Vigor ADSL routers
(although the oldest V2600 models with the long line firmware are
reasonable).  The ISPs are Demon and Zen.  Note that the load balancing
needs some careful setup if you use websites that lock your IP address as
part of their security.  You need to set the router to always use one
specific ISP to ensure such websites work OK.  A professional ISP may be
able to bond two ADSL channels together so that your router has a single IP
address, but I've never investigated.  However you would lose the
reliability that having two different ISPs offers.

A problem I have seen elsewhere is where one line into the premises had an
ADSL service, which was not actually used and therefore did not have a
router connected to it (this for reasons to do with the ISP's poor
performance) and the other line was in use with a router connected.  The
router on the second line reported fairly regular bursts of errors.  The BT
technician who attended at the insistence of the ISP thought it was
crosstalk from the unused ADSL service which regularly sent large signals in
the vain hope of communicating with a router.  We connected a spare router
to the unused service and the noise bursts went away.

--
Graham J

Sorry to hijack the thread..

I use two adsl nation Xmodems -- on the basis that they
worked....prior to a extended outage with our BT service we used a BT
voyager220 for 2 years.

I am hoping to configure a Lynksis/cisco RV042 as a load balance but
havn't quite got it working yet ---( actually cant get it working on
one WAN let alone two)

The Idnet ---(can Highly recomend service) is a fixed IP and the BT is
not, but seems quite constant....

Regards

Ian

.

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