If you run the following command you will see that it is indeed disabled on the physical interface
R2#sh ip int s0/0 | i Split Split horizon is disabled However, even though the physical interface shows it as "disabled" EIGRP will not forward updates it received on this interface. I know it's strange but EIGRP Split Horizon is on by default, even on a physical frame interface. I will lab this one up later to verify Steve -----Original Message----- From: Routt, Rob [mailto:[email protected]] Sent: Monday, April 26, 2010 4:09 PM To: Di Bias, Steve; Joe Astorino; [email protected]; CCIE OSL Subject: RE: [OSL | CCIE_RS] VOD Frame-relay Hmm. So is it safe to EIGRP "enables split-horizon" on physical interfaces then? Knowing that a physical interface by default is considered a multipoint interface, I understand the logic, but I don't see why running EIGRP would re-enable split-horizon unless EIGRP specifically re-enables it. -R -----Original Message----- From: Di Bias, Steve [mailto:[email protected]] Sent: Monday, April 26, 2010 3:47 PM To: Joe Astorino; Routt, Rob; [email protected]; CCIE OSL Subject: RE: [OSL | CCIE_RS] VOD Frame-relay Joe is right; EIGRP will still be on by default under a physical frame relay interface. You can use the "no ip split-horizon eigrp AS#" command on the interface to disable. Sorry about that -Steve -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Joe Astorino Sent: Monday, April 26, 2010 3:44 PM To: Routt, Rob; [email protected]; CCIE OSL Subject: Re: [OSL | CCIE_RS] VOD Frame-relay You will still need to disable it for EIGRP specifically as well Sent from my Verizon Wireless BlackBerry Regards, Joe Astorino - CCIE #24347 Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 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 -----Original Message----- From: "Routt, Rob" <[email protected]> Date: Mon, 26 Apr 2010 15:24:36 To: ccie_rs<[email protected]> Subject: [OSL | CCIE_RS] VOD Frame-relay _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com UHS Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient (s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message. UHS Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient (s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
