Chuck,
Wouldn't it be safer to say that if a BGP speaking router learns a
prefix from a peer that doesn't have an AS-path attribute (what you
referenced as being originated from) then it is IBGP because bgp
won't tag it's own as-path onto a prefix until it tries to go over a
ebgp connectiong.
I checked RFC 1771 just to be sure. You are correct that I should not have
discussed this in terms of the AS-PATH
Within the BGP update message there is a field defined as path attributes
One of the sub fields of path attributes is the origin . bit settings
within this sub field are the
How does a router assign an iBGP AD vs. an eBGP AD? The iBGP AD is less
preferred than EIGRP and the other interior RPs, is that correct? (one week
until RS qual. exam)
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7i=36596t=36596
how does the router know? I would imagine the router OS checks the BGP
origin. If I am AS 559 and I receive a BGP route that originates in AS 559,
it is either iBGP, or I have a loop. If AS 559 is the only AS in the AS
path, it follows that it is an iBGP route, and therefore is assigned an AD
of
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