备份juniper 的sceeenOS

首先在tftp服务器上启动tftp server（本例中使用的是Cisco TFTP Server）：

检查从Juniper防火墙到TFTP Server网络连通性：netscreen_isg1000-> ping 10.245.33.11
Type escape sequence to abortSending 5, 100-byte ICMP Echos to 10.245.33.11, timeout is 1 seconds
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Success Rate is 100 percent (5/5), round-trip time min/avg/max=0/0/1 ms然后在CLI方式下输入save software from flash to tftp 10.245.33.11 CurrentOS.bin命令，如下所示： your name netscreen_isg1000-> save software from flash to tftp 10.245.33.11 CurrentOS.bin
Load image from flash.
Save software to TFTP 10.245.33.11 (file: CurrentOS.bin). It may take a few minutes ...
Type escape sequence to abort
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!!!!!!!!!!!!!!!!!!!!!完成后在C:\Program Files\Cisco Systems\Cisco TFTP Server目录会有一个文件名为CurrentOS.bin的文件，备份好这个文件即可。