Ben, My first question would be how big is your prefix list per BGP session? What is really going to task this router with 25 sessions is the BGP Scanner and BGP Router processes. To my knowledge MD5 is just for authenticating the session. I could be wrong. Tony Newell Technical Lead RTSG-BB IP Networking -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Ben Buxton Sent: Friday, June 11, 2004 5:49 AM To: nanog@merit.edu Subject: MD5 BGP performance on a VXR? Has anyone done any concrete testing on how well a 7206VXR with an NPE-300 can handle BGP MD5? The box in question has about 25 sessions and is pushing 150Mbps, with a 75% cpu load. I'm curious to know if it's the MD5 taking all the CPU. Thanks, Ben ***** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential, proprietary, and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from all computers. 113