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| author | ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp> | 2015-07-03 15:16:11 +0900 |
|---|---|---|
| committer | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2015-07-13 08:56:08 +0900 |
| commit | 1bf1652c08dde3368e098c2f28260cb24f4aa0f8 (patch) | |
| tree | ae57764ac55db79bdd7cee417ae88ad156129eb9 /table/path.go | |
| parent | b759f2b1ca7176ea134b3a86d8bfea44509712dd (diff) | |
server/table: support iBGP behavior
also added scenario_test
Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
Diffstat (limited to 'table/path.go')
| -rw-r--r-- | table/path.go | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/table/path.go b/table/path.go index f1f92573..8734c513 100644 --- a/table/path.go +++ b/table/path.go @@ -87,11 +87,28 @@ func (path *Path) UpdatePathAttrs(global *config.Global, peer *config.Neighbor) path.pathAttrs = append(path.pathAttrs[:idx], path.pathAttrs[idx+1:]...) } } else if peer.PeerType == config.PEER_TYPE_INTERNAL { + // NEXTHOP handling for iBGP + // if the path generated locally set local address as nexthop. + // if not, don't modify it. + // TODO: NEXT-HOP-SELF support + selfGenerated := path.GetSource().ID == nil + if selfGenerated { + path.SetNexthop(peer.LocalAddress) + } + + // AS_PATH handling for iBGP + // if the path has AS_PATH path attribute, don't modify it. + // if not, attach *empty* AS_PATH path attribute. + idx, _ := path.getPathAttr(bgp.BGP_ATTR_TYPE_AS_PATH) + if idx < 0 { + path.PrependAsn(0, 0) + } + // For iBGP peers we are required to send local-pref attribute // for connected or local prefixes. // We set default local-pref 100. p := bgp.NewPathAttributeLocalPref(100) - idx, _ := path.getPathAttr(bgp.BGP_ATTR_TYPE_LOCAL_PREF) + idx, _ = path.getPathAttr(bgp.BGP_ATTR_TYPE_LOCAL_PREF) if idx < 0 { path.pathAttrs = append(path.pathAttrs, p) } else { |