I work for an ISP and we are currently bonding 5x 6Mb ADSL connections for use as a wireless backhaul. We are currently using a Cisco 3725 and bonding the links via MLPPP. This set up is working fine except that we are not getting the full 30Mb on the download side. We are seeing more like 18 to 20. I am wondering if we can acheive the full speed with our current set up or will we need something different to get the job done.