Hola amigo!
... combine or joint two diferents adsl lines as one two duplicate the bandwidth.
You
can combine them to provide
more available bandwidth
in total but it will
not become one bigger,
faster "pipe". It's still two separate pipes, and it really becomes visible when you have
incoming traffic, as that traffic will only enter through
one of your WAN ports.
There is one exception to this, I will mention it last in my reply. For now, no, its not
faster, it is just
more.
... three physical interfaces: eth0 is connecte to the swicht LAN, and eth1 is connected to an ADSL router, the eth2 is not connected but I had other adsl router with its own internet line connection.
We run four ADSL lines, connected via radio to the zentyal box from four different sites in town. We have different speeds at each downlink which in turn creates its own little magic in allocating bandwidth to the network. It's tuned carefully in the bandwidth limiter to avoid lost traffic (works great for this!).
Use the real measured speed and allow for a decrease of the reported / tested speeds with some 5-10% - recommendation from experience.Now, the interesting part - using firefox on a box via the admin port (our Zentyal box hosts 7 physical NIC, 2 LAN, 4 WAN + 1 management) and the Downthemall download manager I managed to download a Linux ISO at a total speed of nearly 35Mbit. Our downlinks have got about 10Mbit each. It was done as a test, using four different mirrors at Ubuntu and downloading a 4 Gb file does provide enough sustained download to test the theory.
The answer is : Yes, it will most definitely be a good idea, if your network is heavy on multiple connections to the Internet. And, no, it will not help you double your speed except in a rare case like I described here.
The most useful result we have got from this, partly because of our geographically spread out downlinks, is the on-line time, it's near 100% (the
near is due to human error. My errors. I am human...
) Just activate WAN fail-over for the two gateways you now have, set a rule for checking the internet access on each (http requests seems most reliable) and off you go. Voila - no more hanged routers crashing business.
Ok, so what about the
There is one exception to this ?
If your ISP provide bonding on there side and you use true identical network equipment on both lines, they could help you "merge" the traffic on their side and in that way your face to the world would be one. Not two.
... I don't expect them to provide this, though, since they could just as well hand you a more powerful link ...
And is there anything negative to say about the balancing act? Yes, some sites are "over-sensitive" to where your traffic come from, such as on-line banking, web mail servers and other "log-in" places. If you in the middle of the session suddenly have another IP address as origin, you will be forced to log in again and data entered will have been lost. The load-balancing's rules configuration is the answer to this issue. Handle with care.
Good luck, Zentyal is a good friend when piecing servers together!
Topic: Combine two adsl connection (Read 4809 times)