AAISP have been providing bonded ADSL services for many years... There are various things to consider and understand...

Overview

AAISP support per-packet bonding - this is at the IP level, and simply means that packets entering or leaving your site use the ADSL lines on a roundrobin basis (or based on the speed of the lines). That way, a single TCP/IP session is transmitted over multiple lines. There is also details on the AAISP KB page: [1]

Advantages

More bandwidth, as well as resilience (having more that one line increases the probability of staying online in the event of a fault)

Limitations

We do recommend the FireBrick 105 product for bonding, fallback, and firewalling - as of Oct 2010, this is nearing the end of it's life, and the throughput peaks at around 10-10Mb/s - so with today's faster lines, it's limit may be easily reached. -New products are due very soon to replace the 105.

Download Bonding

From the Internet to you. AAISP use FireBrick FB6000 routers to manage ADSL connections. This manages the bonding of traffic from AAISP to your location. IP blocks (configured on Clueless) can be routed to multiple lines on your login. for fallback, the FB6000 will stop routing IPs down a line that is off line, and from the Control Pages you can control which lines are used. Speed wise, the FB6000 will route based on the speed of the line - so if you have a 10M line and a 5M line, then the traffic will be weighted correctly (ie 1/3 on the 5M line, and 2/3 on the 10M line.)

Upload Bonding

Examples

Simple Download Bonding

As AAISP manage download bonding, the simplest set up is as follows:

• You have 2 or more ADSL lines with AAISP (either BT, or BE, or a mix)
• You have a block of IPs, big enough for your LAN
  • The first usable IP will be Router 1, the second Router 2, and the rest will be for your devices.
• You have 2 standard ADSL routers (eg supplied by AAISP)
  • The ZyXELS can be configured to use the other router as a fallback gateway (giving some level of fallback if the ADSL goes down, this isn't configured automatically by AAISP router programming)
• You plug the routers, and computers etc all in to the same network switch
• You pick on of the routers IP addresses to use as the gateway on your devices (or you can set up DHCP server on one of the routers)
  • You could use one router as the gateway for half of your devices, and the other router as the gateway for the other half - thus giving some level of upload bonding

Mixing BT and BE lines

AAISP BT lines and BE lines can be used for bonding, and gives even great resilience in the case of a fault in BT or a fault in BE. - as of October 2010, BE lines need to run on a reduced MTU of 1492 - and bonding will need all lines to use this reduced MTU. This is an tickbox option on the control pages though