What do the BGP peer states including Active, No Neg, and Idle(Admin) mean on S series switches

In addition to Idle and Established, BGP Peer can be in other states including:

Active: indicates that the TCP connection is not set up for the BGP session.
No Neg: indicates that the ability to establish a BGP connection is not negotiated. Assume that one device is configured with IPv4 unicast, and the other device is configured with IPv4 unicast and IPv4 multicast. After the peer relationship is set up between the two devices, the device configured with IPv4 unicast only enters in Established state, whereas the other device configured with IPv4 unicast and IPv4 multicast enters in No Neg state. This is because one device is not configured with IPv4 multicast.
Idle (Admin): indicates that a peer is shut down and does not attempt to set up a connection. If the peer ignore command is executed on the peer or the status of the peer is set to Down through the related MIB, the peer is in Idle (Admin) state.

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