RyuBGP doesn't work properly becase of handling wrong nexthop address.
Therefore, in spite of receiving BGP UPDATE Message in the peering router,
the router fails to learn a new route entry from RyuBGP in BGP table.
(Memo: this issue has not occurred in Vpnv4/mpBGP environment.)
(1) register route entry as prefix_add(prefix='x,x,x,x', next_hop='y.y.y.y')
static eBGP
------- R1 ------------ RyuBGP ---------> Router
x.x.x.x y.y.y.y z.z.z.z => Drop UPDATE(Nexthop: y.y.y.y)
(2) receiving BGP UPDATE Message from iBGP session
iBGP eBGP
------- R1 -----------> RyuBGP ---------> Router
x.x.x.x y.y.y.y z.z.z.z => Drop UPDATE(Nexthop: y.y.y.y)
Signed-off-by: Toshiki Tsuboi <[email protected]>
---
ryu/services/protocols/bgp/peer.py | 6 ------
1 file changed, 6 deletions(-)
diff --git a/ryu/services/protocols/bgp/peer.py
b/ryu/services/protocols/bgp/peer.py
index 48806bc..d293774 100644
--- a/ryu/services/protocols/bgp/peer.py
+++ b/ryu/services/protocols/bgp/peer.py
@@ -802,11 +802,6 @@ class Peer(Source, Sink, NeighborConfListener, Activity):
"""
route_family = path.route_family
- if route_family == RF_IPv4_UC and path.nexthop != '0.0.0.0':
- return path.nexthop
- if route_family == RF_IPv6_UC and path.nexthop != '::':
- return path.nexthop
-
# By default we use BGPS's interface IP with this peer as next_hop.
if self._neigh_conf.next_hop:
next_hop = self._neigh_conf.next_hop
@@ -857,7 +852,6 @@ class Peer(Source, Sink, NeighborConfListener, Activity):
unkown_opttrans_attrs = None
nlri_list = [path.nlri]
- # MP_REACH_NLRI Attribute.
# By default we use BGPS's interface IP with this peer as next_hop.
# TODO(PH): change to use protocol's local address.
# next_hop = self.host_bind_ip
--
1.9.1
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