"[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




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