Martin, Do you have specific platform in mind? Hardware BFD offload implementation may be different on platforms.
Best Regards, [http://www.cisco.com/web/europe/images/email/signature/horizontal06.jpg] Waris Sagheer Technical Marketing Manager Service Provider Access Group (SPAG) [email protected]<mailto:[email protected]> Phone: +1 408 853 6682 Mobile: +1 408 835 1389 CCIE - 19901 <http://www.cisco.com/> This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message. For corporate legal information go to:http://www.cisco.com/web/about/doing_business/legal/cri/index.html From: Dimitris Befas <[email protected]<mailto:[email protected]>> Date: Friday, February 7, 2014 at 7:03 AM To: 'Martin T' <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [c-nsp] understanding BFD "echo mode" Hi Martin, Exactly. Both modes (control & echo) are used when using the echo mode. The hardware handled echo packets are not eligible to remote cpu fluctuations because of the fact that we use the actual remote forwarding router mechanism. So you have more reliable and fast failure detection with echo mode. Farther, because with echo mode you actually use control (or asycnhronous) mode also, you may configure the slow timer to slow down the probable reaction of the control bfd packets and the cpu load that these packets intoduce. http://www.cisco.com/en/US/docs/switches/datacenter/sw/6_x/nx-os/interfaces/ configuration/guide/if_bfd.pdf page 3 Dimitris -----Original Message----- From: cisco-nsp [mailto:[email protected]] On Behalf Of Martin T Sent: Thursday, February 6, 2014 8:46 PM To: [email protected]<mailto:[email protected]> Subject: [c-nsp] understanding BFD "echo mode" Hi, some Cisco routers support BFD in "echo mode". Am I correct that BFD "echo packets" are send besides BFD "control messages" once "echo mode" is enabled and Cisco routers are able to handle former in hardware while BFD "control messages" are punted? regards, Martin _______________________________________________ cisco-nsp mailing list [email protected]<mailto:[email protected]> https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected]<mailto:[email protected]> https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
