[j-nsp] Conditional Advertisemet?

[Jared Gull]

This will work if the route actually acts as a
contributor to the /28 but this would require the
prefix to be more specific.

--- Chuck Anderson <cra at wpi.edu> wrote:

> On Thu, Oct 05, 2006 at 01:59:17PM -0400, Mellott,
> Eric wrote:
> > Have a BGP configuration where I learn a /16
> network from one eBGP
> > neighbor and want to advertise a subset of that
> network, i.e. a /28, to
> > a different eBGP neighbor.  Currently, I am able
> to advertise the subnet
> > by configuring a static route which puts the /28
> in table, however; this
> > kills anything dynamic.  Is there a way with
> conditional advertisements
> > or a generate route to dynamically advertise the
> /28 upon receipt of the
> > /16?  Also, I don't want to rely on the BGP
> neighbor (who is advertising
> > the /16) to give me the /28 instead.  
> 
> This might work:
> 
> [edit routing-options]
> # show generate
> route w.x.y.z/28 policy MATCH-16;
> 
> 
> [edit policy-options]
> # show policy-statement MATCH-16
> term 1 {
>     from {
>         route-filter w.x.0.0/16 exact;
>     }
>     then accept;
> }
> term 2 {
>     then reject;
> }
> _______________________________________________
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> 


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