Re: MX-104 bgp neighbor go down -strange behavior-

Hi,

On a quick replication i did not see any flaps for default family

[edit]
labroot:r1# set protocols bgp group ebgp neighbor 9.9.121.2 peer-as 200 

[edit]
labroot:r1# commit 
commit complete

[edit]
labroot:r1# run show bgp summary 
Groups: 2 Peers: 3 Down peers: 1
Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending
inet.0               
                       0          0          0          0          0          0
Peer                     AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
9.9.101.2               100          7          6       0       0        1:49 0/0/0/0              0/0/0/0
9.9.111.2               100          6          5       0       0        1:45 0/0/0/0              0/0/0/0
9.9.121.2               200          0          0       0       0           2 Active

I see from your output that a new vpn table is being advertised , were you trying to add a new address family support something similar like below, then you would definitely see a bump

labroot:r1# set protocols bgp family inet-vpn unicast        

[edit]
labroot:r1# set protocols bgp group ebgp neighbor 9.9.121.2 peer-as 200 

[edit]
labroot:r1# commit 
commit complete

[edit]
labroot:r1# run show bgp summary 
Groups: 2 Peers: 3 Down peers: 3
Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending
inet.0               
                       0          0          0          0          0          0
bgp.l3vpn.0          
                       0          0          0          0          0          0
Peer                     AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
9.9.101.2               100          0          0       0       0           2 Active
9.9.111.2               100          0          0       0       0           2 Active
9.9.121.2               200          0          0       0       0           2 Active