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authorJosh Bailey <joshb@google.com>2011-07-20 20:49:11 -0700
committerJosh Bailey <joshb@google.com>2011-07-20 20:49:11 -0700
commit0b597ef00ec7c7eebd836e2b1d5a266efcd60005 (patch)
tree818852fc775358cadb0178c15226af63cfb06759 /isisd/.cvsignore
parent6918e74b97fd40f947ebd2eded9ab24b8569d3b8 (diff)
bgpd: When advertising a multipath route, the attribute set to be
advertised is based on the bestpath attribute set, but the following attributes are aggregated from the attribute sets of the multipath constituents: - AS_PATH - ORIGIN - COMMUNITIES - EXTENDED COMMUNITIES In addition the route is advertised with the NEXT_HOP set to the router's interface IP address, instead of the NEXT_HOP of the best path. This is to ensure that traffic will go to this router so it can be fanned out via the multipath route. * bgpd/ecommunity.c * ecommunity_uniq_sort(): Make this function externally accessible * bgpd/ecommunity.h * Add external declaration for ecommunity_uniq_sort() * bgpd/bgp_mpath.c * bgp_info_nexthop_cmp(): Replace calls to bgp_attr_extra_get() to avoid unwanted memory allocation * bgp_info_mpath_free(): Free aggregate attribute for multipath * bgp_info_mpath_attr(): Lookup aggregate attribute of a multipath route * bgp_info_mpath_attr_set(): Set aggregate attribute of a multipath route * bgp_info_mpath_aggregate_update(): Update the aggregate attribute of a multipath route * bgpd/bgp_mpath.h * bgp_info_mpath: Add pointer to hold aggregate attribute of a multipath * Add external declarations for new functions * bgpd/bgp_route.c * bgp_announce_check(): Use aggregate attribute when announcing multipath route * bgp_announce_check_rsclient(): Use aggregate attribute when announcing multipath route * bgp_best_selection(): After updating multipath set, update the multipath aggregate attribute
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