understanding port numbers in "show bgp neighbor" output

m4rtin

In case I execute show bgp neighbor 10.10.10.1, I see following output:

"Peer: 10.10.10.1+8132 AS 64001 Local: 10.11.11.1+179 AS 64002"

As I understand, 8132 and 179 are TCP port numbers. Shouldn't the port numbers be opposite? I mean shouldn't the peer TCP port be 179 and my local IP(10.11.11.1) should use port number from ephemeral port range?

mkomon

Depends on who starts the TCP communication. In this case it was the neighbor who initiated the TCP session.