That's strange, Are you paying for a CIR of 80Mb/s? Normally they only leave the limiting up to you if its more of a burstable connection, Like you pay for 80Mb/s but its a full line rate interface and its billed per Mb/s over 80 on a 95th percentile scheme. If that is the case you can safely go over 80Mb/s for a certian amount of time per month, Assuming its billed monthly. Nick Olsen Network Operations (321) 205-1100 x106 ---------------------------------------- From: "Alan Bryant" <alan@gtekcommunications.com> Sent: Thursday, July 08, 2010 6:07 PM To: nanog@nanog.org Subject: Rate Limiting on Cisco Router Thanks again for all the responses to my previous post. We have a Cisco 7206VXR router with IOS of 12.4(12) and a PA-POS-1OC3 card ofr our OC3. The problem we have now is that we are only paying for 80 MB/s of the OC-3, and the ISP is leaving the capping of it up to us. I have googled and the only things I can find is that you can not do a real cap on this type of interface. We have tried the rate-limit command with various parameters and we are unable to keep it at 80. I have read that this is not the correct way to do it, but I'm not sure what is. Any advice? Pointers appreciated. -- Alan Bryant | Systems Administrator Gtek Computers & Wireless, LLC. alan@gtekcommunications.com | www.gtek.biz O 361-777-1400 | F 361-777-1405