JunOS : logger: transfer-file failed to transfer /var/transfer/config/juniper.conf

使用归档功能是否有以下日志错误条目，以将配置备份到Juniper设备上？

logger: transfer-file failed to transfer /var/transfer/config/re0.HostName_juniper.conf.gz_20161129_034459

在以下情况下，我经历了以下情况(未提供更多详细信息)：

The backup server (ftp, sftp) is reachable and working properly
 The credentials to the backup server are working
 The public key is accepted/entered in known_hosts (in case of scp/sftp)
 The archival parameters are set properly
 The local folder /var/transfer/config exist and writeable by root

我发现在提供密码时，某些JunOS版本之间的语法略有不同。

JunOS 11.4R5.7及更早版本：

set system archival configuration archive-sites "scp://User@IP_Address/path/to/device/config" password "PASSWORD"

JunOS 11.4R6.7及更高版本：

set system archival configuration archive-sites "scp://User:PASSWORD@IP_Address/path/to/device/config"