Combining 2 broadband connections

I'm sure someone mentioned this a while back but I can't recall the details.

Suppose one had a cable modem and an ADSL modem both providing a broadband
connection on ethernet.

Can these be combined. As in if one connection's is really poor, the other can
'take over' seamlessly ?

Graham

Eeyore wrote:

> I'm sure someone mentioned this a while back but I can't recall the
> details.
>
> Suppose one had a cable modem and an ADSL modem both providing a broadband
> connection on ethernet.
>
> Can these be combined. As in if one connection's is really poor, the other
> can 'take over' seamlessly ?

Yes, but it's not ever going to be completely seamless. One failover
detection method is to ping a public address [eg a root nameserver]
periodically [eg every 30s] from each interface, and if one stops working,
stop sending traffic down it. How sufficient that is for you depends on
what applications you're using over it, and what your definition of 'really
poor' is. You'd probably use this in conjunction with load balancing to
make efficient use of both circuits.

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On Mar 15, 12:20 pm, Eeyore <rabbitsfriendsandrelati...@hotmail.com>
wrote:
> I'm sure someone mentioned this a while back but I can't recall the details.
>
> Suppose one had a cable modem and an ADSL modem both providing a broadband
> connection on ethernet.
>
> Can these be combined. As in if one connection's is really poor, the other can
> 'take over' seamlessly ?

load balancing router with failover.

http://www.xrio.com/xrionet/ etc etc

Phil

PhilT wrote:

> Eeyore wrote
>
> > I'm sure someone mentioned this a while back but I can't recall the details.
> >
> > Suppose one had a cable modem and an ADSL modem both providing a broadband
> > connection on ethernet.
> >
> > Can these be combined. As in if one connection's is really poor, the other can
> > 'take over' seamlessly ?
>
> load balancing router with failover.
>
> http://www.xrio.com/xrionet/ etc etc

That may be a bit more upmarket than I require !

When I came across this issue mentioned here before I'm sure someone mentioned some
product like 'red box' or similar but I haven't managed to find anything like that
with that name via google yet and if I did bookmark it I can't see it now. Does that
ring any bells ?

Graham

Eeyore wrote:
>
> When I came across this issue mentioned here before I'm sure someone
> mentioned some product like 'red box' or similar

http://www.firebrick.co.uk ?

Grant wrote:

> Eeyore wrote:
> >
> > When I came across this issue mentioned here before I'm sure someone
> > mentioned some product like 'red box' or similar
>
> http://www.firebrick.co.uk ?

That was the one thanks. Red brick, firebrick etc...

Graham

On 15 Mar 2007, Eeyore wrote:

>Grant wrote:

>> http://www.firebrick.co.uk ?

>That was the one thanks. Red brick, firebrick etc...

There are Edimax units for 2 or 4 WAN connections (under 100 quid)
(but I've not yet seen a UK supplier for this, sorry).