Exact configs are sent. Thanks -Esa
On Sat, May 23, 2020 at 11:23 AM Claudio Jeker <[email protected]> wrote: > On Sat, May 23, 2020 at 12:47:58AM +0300, Esa Kuusisto wrote: > > Hi > > > > I upgraded today two openbsd routers with openbgpd from 6.6 -> 6.7. > Upgrade > > was done using sysupgrade. Router1 and Router2 have two ebgp peers, two > > iBGP peers to local switches and one iBGP peer between Router1 > <->Router2. > > Router2 was first upgraded and no problems there. After Router1 upgrade > I > > saw high cpu utilization from bgpd. From logs I saw that both Router1 and > > Router2 saw two networks being updated between each other and withdraw > > multiple times every second: > > > > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor > AAA.BBB.211.252 > > (PeerRouter2_v4) AS43XXX: withdraw 149.63.0.0/17 > > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor > AAA.BBB.211.252 > > (PeerRouter2_v4) AS43XXX: withdraw 149.63.59.0/24 > > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor > AAA.BBB.211.252 > > (PeerRouter2_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.252 > > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor > AAA.BBB.211.252 > > (PeerRouter2_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.252 > > > > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor > AAA.BBB.211.253 > > (PeerRouter1_v4) AS43XXX: withdraw 149.63.0.0/17 > > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor > AAA.BBB.211.253 > > (PeerRouter1_v4) AS43XXX: withdraw 149.63.59.0/24 > > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor > AAA.BBB.211.253 > > (PeerRouter1_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.253 > > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor > AAA.BBB.211.253 > > (PeerRouter1_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.253 > > > > Router1 > > Neighbor AS MsgRcvd MsgSent OutQ Up/Down > > State/PrfRcvd > > PeerRouter2_v4 43XXX 5564646 5639942 0 00:47:19 810647 > > PeerRouter2_v6 43XXX 52294 82663 0 00:47:19 85391 > > > > Router2 > > Neighbor AS MsgRcvd MsgSent OutQ Up/Down > > State/PrfRcvd > > PeerRouter1_v4 43XXX 6039364 6037168 0 00:47:34 810654 > > PeerRouter1_v6 43XXX 421226 417520 0 00:47:34 87247 > > > > I do not have any relation to those 149.63/17 and 149.63.59/24 networks. > > > > For debug purposes I did filter those announcements and problem was > fixed. > > I did remove filter to test if the announcement loop was gone and it was > > for now. > > No configuration changes to bgpd.conf before or after upgrade (except > that > > filter after the high cpu load reason was found). > > > > Br > > -Esa Kuusisto > > > > Please provide the bgpd.conf files for both routers. There are many ways > you can create an update loop and it is impossible to tell you what it is > without knowing the exact config. > > -- > :wq Claudio >
