[nsp] network statements in two eBGP peers

Brian Wallingford brian at meganet.net
Wed Feb 18 23:22:02 EST 2004

On Wed, 18 Feb 2004, joshua sahala wrote:

:On (18/02/04 21:03), Brian Wallingford wrote:
:> On Wed, 18 Feb 2004 isaac at ravengate.net wrote:
:> :is it a problem to announce the same networks from two different eBGP
:> :peers to two different upstreams?
:> There are no technical barriers to this scenario, only political (and only
:> if the prefixes are not your own).
:if you do not consider inconsistant-as a technical problem - your
:prefixes will appear to be originated by different asn's...typically not
:a good thing

Agreed.  However (a liability of my snipping), Isaac mentioned his
intention of merging into a single AS, presumably inferring a temporary
workaround.  As an interim solution, though not a "good thing", it works
fine when judiciously tuned.

Not all *that* long ago, use of inconsistent AS was a very
effective/creative method for smaller entities that did not qualify for
thier own CIDR space to multihome using upstream space. ;)


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