[j-nsp] BGP Communities

[Andrey Zarechansky]

On Wed, May 05, 2010 at 10:05:42AM -0400, Paul Stewart wrote:

Hi, Paul!

[dd]
> 
> In the Cisco world, we had to define network statements of our own subnets
> and route those blocks to Null0 in order to advertise. I'm thinking
> something similar here in JunOS?

You can check what is actually advertised to the neighbor:
show route advertising-protocol bgp <neighbor-ip>

To understand why the prefix isn't advertised :
show route XXX detail

To advertise less-specific route when and only when you have more-specific
route:

[routing-options aggregate]
route xxxx/zz {
	policy <policy-name>;
	community [];
}

[policy-options policy-statement <policy-name>]
term accept {
    from protocol <YourIGP>; 
    then accept;
}
then reject;

> 
> Thanks for any insight.
> 
>  
> 
> Paul
> 
>  
> 
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