With show chassis cluster status I see that the cluster seems to work in the basic operation:
And the follow pic show the ssh-access of both nodes:
And now, i want to explain my problem: There is a kind of "IP-flapping". During the ssh-session to a node, i suddently become a ssh-fatal error - the connection is closed.
If i want to reconnect to this node, i'm logged to the another node with the same IP-address! This happens of both nodes every few minutes. It may also be, both IP-Adresses 192.168.6.9 & 192.168.6.10 logged to node0. Another time, both IP-Addresse logged to node1. Shown on the pics below: