Can anybody remember what the limitations on site-site vpn connections were with old 515-r and 506 models. From before Cisco added the "E" to them. I have an 515 at one of my sites and it seems to be maxing out with 5 site-site connections. I thought the 506 was the limited device and 515-Rs were not. Or was it the 515-UR? I have a 3000 concentrator at my main site so I can hub-spoke from that buy I'd rather send the traffic direct between the sites.