[j-nsp] Only announce BGP learned networks

[Mark Tinka]

On Monday, February 20, 2012 10:30:39 PM Julien Goodwin 
wrote:

> 2. IGP (OSPF, IS-IS) routes are preferred over BGP in
> JunOS, unlike IOS

IOS (and IOS XR) runs BGP in two ways:

	o iBGP routes have an administrative distance (Cisco
	  speak for Juniper's "preference") of 200.

	o eBGP routes have an administrative distance of 20.


Recommendations in the industry have been to equalize these 
values to avoid issues.

We run our IOS and IOS XR devices with their defaults (20 
for eBGP and 200 for iBGP) because there is no overlap 
between different routing protocols or within BGP.

Mark.
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