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authorJosh Bailey <joshb@google.com>2011-07-20 20:48:20 -0700
committerJosh Bailey <joshb@google.com>2011-07-20 20:48:20 -0700
commit6918e74b97fd40f947ebd2eded9ab24b8569d3b8 (patch)
treee7d5e43b25eaf963065016d3998a78e5e5568111 /lib/privs.h
parent8196f13d2ab7f3b09150c00328228f90391acb7c (diff)
bgpd: For deterministic MED build a multipath set for each peer AS as the
first stage of the best path calculation. The second stage then selects a winner from each peer AS's best path. In the second stage we clear multipath set of the non-selected best paths via bgp_mp_dmed_deselect(). Since the multipath set is already marked up for the winning path, we don't call bgp_info_mpath_update() after the second stage calculation. * bgpd/bgp_mpath.c * bgp_mp_dmed_deselect(): New function to cleanup the multipath markup if a DMED selected path loses in stage 2 of the best path calculation * bgpd/bgp_mpath.h * Add external declaration of bgp_mp_dmed_deselect() * bgpd/bgp_route.c * bgp_best_selection(): If multipath is enabled, build up the mp_list for the current peer AS, and do the RIB markup the best path from that AS. In the second stage, clear the RIB markup for the DMED selected path if it is not selected as best. Only call bgp_info_mpath_update() in the second stage when not doing deterministic MED.
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