[44045] in North American Network Operators' Group

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RE: redistribute IGP routes to BGP

daemon@ATHENA.MIT.EDU (Zhao, Xingguo)
Thu Nov 1 12:56:27 2001

Message-ID: <6F2719D5300C624BBC5F69424EC0C206CECE15@celox-stl-ems2.celoxnetworks.com>
From: "Zhao, Xingguo" <xzhao@celoxnetworks.com>
To: 'Brian' <bri@sonicboom.org>,
	"Zhao, Xingguo" <xzhao@celoxnetworks.com>, nanog@merit.edu
Date: Thu, 1 Nov 2001 11:54:25 -0600 
MIME-Version: 1.0
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Errors-To: owner-nanog-outgoing@merit.edu


I didn't get how this helps to make this redistribution useful.
Could you give me more hints?

> -----Original Message-----
> From: Brian [mailto:bri@sonicboom.org]
> Sent: Thursday, November 01, 2001 11:45 AM
> To: Zhao, Xingguo; nanog@merit.edu
> Subject: Re: 
> 
> 
> I would much rather define my neighbors individually and 
> control them that
> way, and use either no sync or a hi metric null route to 
> satisfy bgp's must
> be in igp requirement.
> 
>         Brian
> 
> ----- Original Message -----
> From: "Zhao, Xingguo" <xzhao@celoxnetworks.com>
> To: <nanog@merit.edu>
> Sent: Thursday, November 01, 2001 9:33 AM
> 
> 
> >
> > Hi, all
> >
> > I have a question regarding to redistribute IGR routes into 
> BGP. Currently
> > both Cisco
> > and Juniper support it.
> >
> > Here I don't understand what is the advantage of this 
> redistribution?
> > Because BGP is
> > potentially injecting information into the IGP and then sending such
> > information back into BGP.
> >
> > Could anybody provide more description regarding the 
> advantage and the
> > disadvantage
> > of redistribuing IGP routes into BGP?
> >
> > Do people use this in real life?
> >
> > Thanks a lot,
> > Xingguo
> >
> 

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