在升級前先要檢查所要升級的版本需要的RAM 和 Flash 大小.

以下是升級到7.0所需要的內(nèi)存和flash.
PIX Model RAM Requirements Flash Requirements
Restricted (R) UnRestricted (UR) / Failover Only (FO)
PIX-515 64 MB* 128 MB* 16 MB(flash)
PIX-515 E 64 MB* 128 MB* 16 MB(flash)

PIX-525 128 MB 256 MB 16 MB
PIX-535 512 MB 1 GB 16 MB

以下是在PIX-525上進行的升級

根據(jù)提示鍵入enable命令,然后使用 copy tFTP flash命令.
pixfirewall> enable
PassWord:
<密碼>
pixfirewall# copy tftp flash
Address or name of remote host [0.0.0.0]? <tftp服務器ip地址>
Source file name [cdisk]?
<輸入在TFTP服務器上的新軟件的文件名>
copying tftp://172.18.173.123/pix701.bin to flash:image
[yesnoagain]? yes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Received 5124096 bytes
Erasing current image
Writing 5066808 bytes of image
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Image installed
pixfirewall#
pixfirewall# reload
PRoceed with reload? [confirm]
<enter>
Rebooting....

完成升級工作.現(xiàn)在PIX使用的是7.0版本的軟件.