[isp-bgp] Re: AW: Re: BGP Advertisement question..

[James <haesu@...>]

> >If I remember correctly, the network command always generates routes 
> >with the "I" attribute.   To get an incomplete attribute one would 
> >need to do a "redistribute igp" in the router bgp ASN config.   (that 
> >would be a really bad idea)...
> 

well... my question was more or less.. does igp->incomp change also apply on statcon
routes or just on igp's... but i just tested it now on a box, and it appears to
also set incomplete origin on any type of redistribution from external proto. :)

-J


> 
> It can be ok if you know what you're doing... But if you want to change 
> the origin attribute (for instance, to do some traffic engineering 
> without having to do AS path prepending) you may want to use a route 
> map for this:
> 
> !
> router bgp 12345
>  network 192.0.2.64 mask 255.255.255.192 route-map setorigin
> !
> route-map setorigin permit 10
>  set origin incomplete
> !
> 
> BTW, I don't think anyone warned the original poster yet about the 
> evilness of unnecessary deaggregation. There was a whole bunch of /24s 
> there that were also covered by an aggregate and thus unnecessary 
> pollution to the global routing table.
> 
> 
> 




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-- 
James Jun                                            TowardEX Technologies, Inc.
Technical Lead                        Network Design, Consulting, IT Outsourcing
james@...                  Boston-based Colocation & Bandwidth Services
cell: 1(978)-394-2867           web: http://www.towardex.com , noc: www.twdx.net






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