Oracle RAC 11g R2. Node pinned or unpinned?

Hi all, I'm working with Oracle Clusterware & RAC 11 g R2.
As is my first time, I really don't understand what is the meanning of pinning or unpinning a node.
Can anyone help me please?
Thanks in advance!!

From 11.2 RAC deployment guide,
Pinning a node means that the association of a node name with a node number is fixed. If a node is not pinned, its node number may change if the lease expires while it is down. The lease of a pinned node never expires.Since your installation is a clean installation ( no previous installation done) , you don't need to pin the nodes, it would be done by oracle clusterware.
HTH
Aman....

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user2033016 wrote:
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not supported ..

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846671 wrote:
Dear all
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