[j-nsp] load balancing in Route reflector scenario

[OBrien, Will]

I'd consider preceding certain route ranges across the links. Prefer a range of routes on each link. Depending how you write your filters, you'll be able to tune things a bit as well as keep redundancy. The return path can be more difficult, but I find that as prepends or more specific route advertisements work well.

Will O'Brien

On Aug 10, 2011, at 4:53 PM, "Robert Raszuk" <robert at raszuk.net> wrote:

> Hi Keegan,
> 
>>    By default Junos and IOS-XR advertise only those best path in BGP
>>    which actually are installed into forwarding. Advertising inactive
>>    knob will overwrite it.
>> 
>> Wouldn't this lead to traffic being blackholed?  If all the routes for a
>> given destination are inactive would this still cause BGP to advertise a
>> route for them?
> 
> Nope ... there can be other "producers" of the same route (OSPF, ISIS, 
> STATIC) which will be in the RIB. If not there is always next step - 
> less specific route to be used.
> 
> So there are some valid cases where you may want to attract by BGP all 
> traffic, but switch it according by your own policy and not by BGP 
> decision.
> 
> Cheers,
> R.
> 
> 
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