The replication password is an eight alphanumeric character string used for encrypting communications between Subnet Managers nodes. All Subnet Managers must be configured with the same string, and you set the replication password using the smsubnetprotection command on the management controller of each Subnet Manager node. Because of the password's secure nature, is not readable. Therefore, you must remember the password for when adding Subnet Manager nodes in the future. Should you forget the replication password, you must reconfigure all Subnet Manager nodes with a new replication password.