Thx all, it is an interesting one. I remember Don Slice at Cisco saying that they were looking into this but never got much further than that.
Personally, I reckon there would be much impact to them developing this to the DUAL algorithm and this is what the delay in some answers to this discussion is all about. Guys, great to hear your views on this. Really interesting stuff. -----Original Message----- From: Marty Adkins [mailto:[EMAIL PROTECTED]] Sent: 13 December 2002 23:19 To: [EMAIL PROTECTED] Subject: Re: EIGRP Adjacenies are Unidirectional. Why? [7:59186] "[EMAIL PROTECTED]" wrote: > > As EIGRP only looks at incoming hello packets (EIGRP type 5 packets) to keep > a peer neighbor relationship up on a particular side of a routed link., this > can be a prime issue for "black hole" routing issues. > > OSPF adjacencies are bi-directional. Makes more sense. > > Why was EIGRP designed this way? > I don't know why, but I do know Cisco is revisiting that decision. At Networkers 2002 Alvaro described an enhancement "on the drawing board" called reliable three-way handshake. Backward compatible. See session RST-440. Marty Adkins Chesapeake NetCraftsmen, LLC 1290 Bay Dale Drive, Suite 312 http://www.netcraftsmen.NET Arnold, MD 21012-2325 Cisco CCIE #1289 For more information about Barclays Capital, please visit our web site at http://www.barcap.com. Internet communications are not secure and therefore the Barclays Group does not accept legal responsibility for the contents of this message. Although the Barclays Group operates anti-virus programmes, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Barclays Group. Replies to this email may be monitored by the Barclays Group for operational or business reasons. ------------------------------------------------------------------------ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59215&t=59186 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]