modification request for rs client feature

Arnold Nipper arnold at nipper.de
Fri Dec 23 01:39:32 CET 2011


on 23.12.2011 01:08 robert jakub wrote:
> On Dec 22, 2011, at 1:56 PM, Ondrej Zajicek wrote:
> 
>>> The idea of a route server is that it "... reduces modifications
>>> to advertised route attributes to be transparent (for example
>>> does not prepend its AS number to AS PATH attribute and keeps MED
>>> attribute)."
>>> 
>>> However in case that there is a BGP speaker (gateway GW ) which
>>> is in the same ASN as the RS it is at least necessary to add the
>>> own ASN when announcing prefixes originating in the ASN.
>>> 
>>> 
>>> Hence I would like to propose to modify
>>> 
>>> do not prepend own AS number
>>> 
>>> to
>>> 
>>> do not prepend owwn AS number except for prefixes learnt from
>>> iBGP
>>> 
>>> Does that make sense?
>> 
>> Yes, it does make sense to me, because it is consistent with the
>> current behavior on local (i.e. non-BGP) routes exported to BGP RS
>> session.
>> 
>> Note that there is a draft on RS behavior, which does not mention
>> this: 
>> http://tools.ietf.org/html/draft-jasinska-ix-bgp-route-server-03
> 
> but can it be optional, not required (eg: with some command to revert
> to old behavior)
> 

I would propose to do it the other way round if the proposed behaviour
would be implemented. I.e. make the old behaviour an option.


Best regards,
Arnold
-- 
Arnold Nipper / nIPper consulting, Sandhausen, Germany
email: arnold at nipper.de      phone: +49 6224 5593407 2
mobile: +49 152 53717690     fax:   +49 6224 5593407 9

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