21/09/2017
BGP Neighbor states
- idle:
- BGP is down or waiting next retry
- Connect:
- The BGP is waiting for the TCP connection to be completed
- Active:
- The TCP Connection failed, Connect-retry timer running, listening for incoming TCP Connections
- Opensent:
- The TCP connection exists and a BGP Open Message as been send.
- The matching Open Message has not yet been received
- Openconfirm:
- Open Message has been send and received
- Established:
- All neighbor parameters match
- Relationship works
- Peers can exchange update messages
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