I just recently moved from a cisco 1720 router and a pix 515 to a cisco 2851 ISR and ASA 5520. We also have a DS3 coming in from our provider. We use to have 2 bonded T1's on the 1720 since the upgrade we have added 2 more T1's. So now we have 4 bonded T1's in the 2851 from what I have read I can bond and additional 2 T1's on the 2851 giving me 6 bonded T1's. After upgrading we have been adding clients so the upload and download has pretty much stayed the same for the most part. My question is after adding 2 more T1's to get 6 bonded whats next? Do I have to purchase more firewalls and some kind of load balancing? What are my choices? Thanks in advance.