BGP - Neighbor Events Error/Receive Unexpected Message in OpenSent State

[swiss]

I have BGP setup through VPN . It establish for 30 seconds and then disconnects and again connects after 30 seconds . It keeps on flapping with this mesage Neighbor Events Error/Receive Unexpected Message in OpenSent State . Other side is Junos

[Derelict]

@swiss If the log entries do not provide sufficient detail, one thing you can do is run a packet canpture on the VPN interface vor TCP port 179 and use wireshark to show you exactly what is being sent that your side does not like. Then you have something to either accommodate in your configuration or ask the other side to stop doing.