[c-nsp] IOS XR BGP

[Nick Ryce]

Hi,

I am moving from Juniper to Cisco ( IOS XR ) and am looking to emulate a certain feature ( aggregate addressing for BGP )

In Junos I can set routing-options aggregate route x.x.x.x/19 . If there is a less specific contributing route from IGP then the aggregate is announced through BGP.

In BGP on IOS XR you use the network statement network x.x.x.x/19 now you need to have an exact route for this ( normally setting a static route ).  This will not suit my requirements as if we lose IGP on that router I would like to stop announcing the ranges via BGP but the static route will still be there and I will theoretically blackhole traffic.

Any ideas how to allow BGP to announce an aggregate route when there is less specific in IGP would be a great help.


Thanks

Nick



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