Currently we're using a Cisco 2611 with 2 T1-WIC cards. This router is running bonded T1s using HDLC and load balancing per-packet across these interfaces. We've added a 3rd T1 to the mix and since the Cisco cannot physically handle the 3rd T1 we purchased an HP Secure Router 7102dl with 2 dual port T1 cards.
What I am not able to figure out is how to setup the HP to bond the 3 T1s to get the full 4.5Mb speeds. I've asked Hp and they said this:
"If you plan to use HDLC, please note that multi-links are not supported. The HDLC protocol will be bonded to individual T1 interfaces. These individual interfaces are understood to provide a connection to different routers."
Then, my ISP said this:
"I believe they're just stating they do not support load-balancing with HDLC. You need to inquire as to load balancing per-packet across these interfaces, which should be completely independent of the actual layer2 protocol being used."
Is there anyone out there who can help me get this router setup properly?