juniper EX交换机密码丢失
首先请重启设备后重新尝试：请注意是输入boot -s When prompted to enter Loader mode hit the bar and you will besitting at the "loader>" prompt.Enter the following command:
loader> boot -s
Enter full pathname of shell or 'recovery' for root password recovery or
RETURN for /bin/sh:
然后输入recovery看能否正常恢复。
如果以上操作不成功，则需要通过TFTP重新传输JUNOS回退到之前可正常运行的版本：
1、Prepare a TFTP server and put the corresponding image in the TFTP root
directory
Example: The TFTP server has an IP address of 192.168.100.1/24 and the
image is jinstall-ex-9.1R2.7-domestic-signed.tgz
2、Connect the EX-Series Switch management port to the TFTP server directly
or make sure they are in same broadcast domain.
3、Connect a terminal to the EX-Series Switch console port and power on the
switch (for next steps see log below for example)
When you see the "loading /boot/defaults/loader.conf" display hit ENTER
Hit to boot immediately, or space bar for command prompt.
Hit the space bar to enter the manual loader. The loader > prompt
displays.
(NOTE: There is a 1 second delay for hitting the space bar)
(TIPS: you can hit space bar after you see "Loading
/boot/defaults/loader.conf" message)
4、Set the EX Switch management IP address and netmask.
loader> set ipaddr=192.168.100.2
loader> set netmask=255.255.255.0
loader> set serverip=192.168.100.1
5、Issue install command to install JUNOS image by TFTP.
loader> install tftp://192.168.100.1/jinstall-ex-9.1R2.7-domestic-signed.tgz 111 222
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