"Howard C. Berkowitz" wrote:
> 
> HDLC really doesn't offer any advantages over PPP, so it really
> reflects someone who doesn't want to do minimum reconfiguration of
> their Ciscos to worry about using PPP for multivendor compatibility.
> 
Well, one small advantage is that Cisco's proprietary HDLC keepalive
will report a loop condition on the layer 1.  And it will also, by
default, treat a looped interface as "line protocol up", which is
great for testing, using just the router.

  Marty Adkins                     Email: [EMAIL PROTECTED]
  Mentor Technologies              Phone: 240-568-6526
  133 National Business Pkwy       WWW: http://www.mentortech.com
  Annapolis Junction, MD  20701    Cisco CCIE #1289

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