我信任哪一个？:-) RFC：空闲状态：
Initially, the BGP peer FSM is in the Idle state. Hereafter, the
BGP peer FSM will be shortened to BGP FSM.
In this state, BGP FSM refuses all incoming BGP connections for
this peer. No resources are allocated to the peer. In response
to a ManualStart event (Event 1) or an AutomaticStart event (Event
3), the local system:
- initializes all BGP resources for the peer connection,
- sets ConnectRetryCounter to zero,
- starts the ConnectRetryTimer with the initial value,
- initiates a TCP connection to the other BGP peer,
- listens for a connection that may be initiated by the remote
BGP peer, and
- changes its state to Connect.
The ManualStop event (Event 2) and AutomaticStop (Event 8) event
are ignored in the Idle state.
Rekhter, et al. Standards Track [Page 53]
RFC 4271 BGP-4 January 2006
In response to a ManualStart_with_PassiveTcpEstablishment event
(Event 4) or AutomaticStart_with_PassiveTcpEstablishment event
(Event 5), the local system:
- initializes all BGP resources,
- sets the ConnectRetryCounter to zero,
- starts the ConnectRetryTimer with the initial value,
- listens for a connection that may be initiated by the remote
peer, and
**- changes its state to Active.**
