GroupStudy.com GroupStudy.com - A virtual community of network engineers
 Home  BookStore  StudyNotes  Links  Archives  StudyRooms  HelpWanted  Discounts  Login
Re: EIGRP Manual Neighbor Configuration/Unicast posted 09/15/2002
[Chronological Index] [Thread Index] [Top] [Date Prev][Date Next] [Thread Prev][Thread Next]


I believe you just need to set the neighbor and make the interface the
neighbor is on passive.


----- Original Message -----
From: "Joseph Rinehart" <jjrinehart@xxxxxxxxxxx>
To: <ccielab@xxxxxxxxxxxxxx>
Sent: Friday, September 13, 2002 7:48 PM
Subject: Re: EIGRP Manual Neighbor Configuration/Unicast


> The net of this is that I am trying to see if there is a way to force
EIGRP
> to use unicast rather than multicast for the hello messages.  Any ideas?
> ----- Original Message -----
> From: "Edward Monk" <edmonk@xxxxxxxxx>
> To: "'Joseph Rinehart'" <jjrinehart@xxxxxxxxxxx>; <ccielab@xxxxxxxxxxxxxx>
> Sent: Friday, September 13, 2002 3:56 PM
> Subject: RE: EIGRP Manual Neighbor Configuration/Unicast
>
>
> > Joseph,
> >
> > It supposedly should work but Cisco reports there is a bug and
> > recommends not using it. I tried to search on the bug but it gives me a
> > message about it not being able to be displayed. Not sure why. Maybe a
> > there is Cisco employee who could pull it for us to see what it is?
> >
> > Look under "EIGRP frequently asked questions" on the Cisco site and you
> > will see a document called. "What does the neighbor statement in the
> > EIGRP configuration section do?"
> >
> > http://www.cisco.com/warp/public/103/eigrpfaq.shtml#Q9
> >
> > Basically it says don't use it because it does very bad things. Hmmmm...
> >
> > -----Original Message-----
> > From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
> > Joseph Rinehart
> > Sent: Friday, September 13, 2002 4:08 PM
> > To: ccielab@xxxxxxxxxxxxxx
> > Subject: EIGRP Manual Neighbor Configuration/Unicast
> >
> > Weird question, but I can't find any trace of this on CCO.
> >
> > EIGRP uses multicasts to send out hellos for neighbor discovery as does
> > other routing protocols.  In certain environments where you cannot
> > broadcast
> > or multicast that can be a problem.  I tried programming in neighbors
> > manually and the hellos seems to be sent out in non broadcast mode.
> >
> > The thing is that there is NO neighbor command documented for EIGRP,
> > though
> > I looked.  I tried this on 11.2 as well as 12.0 code so I know it works.
> >
> > First, does anyone know the details about the function of the
> > undocumented
> > neighbor command in EIGRP?  Does it indeed use unicast rather than
> > multicast
> > for hellos?
> >
> > Second, if this is not the case is there a way to force unicast in EIGRP
> > for
> > hellos?
> >
> > Looking forward to the responses.
> >
> > Joe