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Timo Teräs authored and David Lamparter committed ef757700d0f
bgpd: allow using rtt in route-map's set metric

Useful when the BGP neighbors are over tunnels that have large differences in geographic distances and RTTs. Especially useful for DMVPN setups to allow preferring closes hub. The parameter is added as new alias command as otherwise it seems the command parser is not able to match it properly (it seems merging is done for the various 'set metric' route-map objects in different routing engines). For same reason also they are listed as three separate options: optional +/- seems not possibly easily. Related research papers: http://www.pps.univ-paris-diderot.fr/~jch/research/delay-based.pdf http://arxiv.org/pdf/1309.0632.pdf Paper on similar extension to Babel: http://www.pps.univ-paris-diderot.fr/~jch/research/rapport-jonglez-2013.pdf Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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bgpd/bgp_packet.c

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