diff options
Diffstat (limited to 'table/destination_test.go')
| -rw-r--r-- | table/destination_test.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/table/destination_test.go b/table/destination_test.go index 32316f5f..c0666e21 100644 --- a/table/destination_test.go +++ b/table/destination_test.go @@ -217,6 +217,42 @@ func TestImplicitWithdrawCalculate(t *testing.T) { assert.Equal(t, len(d.knownPathList), 1) } +func TestTimeTieBreaker(t *testing.T) { + origin := bgp.NewPathAttributeOrigin(0) + aspathParam := []bgp.AsPathParamInterface{bgp.NewAs4PathParam(2, []uint32{65001})} + aspath := bgp.NewPathAttributeAsPath(aspathParam) + nexthop := bgp.NewPathAttributeNextHop("10.0.0.1") + med := bgp.NewPathAttributeMultiExitDisc(0) + pathAttributes := []bgp.PathAttributeInterface{origin, aspath, nexthop, med} + nlri := bgp.NewIPAddrPrefix(24, "10.10.0.0") + updateMsg := bgp.NewBGPUpdateMessage(nil, pathAttributes, []*bgp.IPAddrPrefix{nlri}) + peer1 := &PeerInfo{AS: 2, LocalAS: 1, Address: net.IP{1, 1, 1, 1}, ID: net.IP{1, 1, 1, 1}} + path1 := ProcessMessage(updateMsg, peer1, time.Now())[0] + + peer2 := &PeerInfo{AS: 2, LocalAS: 1, Address: net.IP{2, 2, 2, 2}, ID: net.IP{2, 2, 2, 2}} // weaker router-id + path2 := ProcessMessage(updateMsg, peer2, time.Now().Add(-1*time.Hour))[0] // older than path1 + + d := NewDestination(nlri) + d.addNewPath(path1) + d.addNewPath(path2) + + d.Calculate(nil) + + assert.Equal(t, len(d.knownPathList), 2) + assert.Equal(t, true, d.GetBestPath("").GetSource().ID.Equal(net.IP{2, 2, 2, 2})) // path from peer2 win + + // this option disables tie breaking by age + SelectionOptions.ExternalCompareRouterId = true + d = NewDestination(nlri) + d.addNewPath(path1) + d.addNewPath(path2) + + d.Calculate(nil) + + assert.Equal(t, len(d.knownPathList), 2) + assert.Equal(t, true, d.GetBestPath("").GetSource().ID.Equal(net.IP{1, 1, 1, 1})) // path from peer1 win +} + func DestCreatePeer() []*PeerInfo { peerD1 := &PeerInfo{AS: 65000} peerD2 := &PeerInfo{AS: 65001} |