rate limit recommended values are
Bc = (CIR/8)*1.5 Be=2*Bc Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com <http://www.ipexpert.com/> From: [email protected] [mailto:[email protected]] On Behalf Of matt reath Sent: Thursday, October 14, 2010 2:13 PM To: ccie_sp Subject: [OSL | CCIE_SP] Calculating burst sizes for CAR I'm reviewing my QoS sections and its still unclear to me how I calculate burst sizes if none are given. For example, if I have a 10Mbps Ethernet link and I want to rate-limit it to 2 Mbps for certain traffic, how would I calculate the burst sizes. access-list 101 permit ip 10.1.1.0 255.255.255.0 10.1.2.0 255.255.255.0 access-list 102 permit ip 10.1.2.0 255.255.255.0 10.1.1.0 255.255.255.0 int fa0/0 rate-limit output access-group 101 2000000 <normal burst> <excess burst> conform-action transmit exceed-action drop rate-limit input access-group 102 2000000 <normal burst> <excess burst> conform-action transmit exceed-action drop -Matt
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