Forum Discussion

Alex34_3323's avatar
Alex34_3323
Icon for Nimbostratus rankNimbostratus
Mar 23, 2012

MD5 checksum before upgrade

Hello,

 

 

In order to upgrade Active and Passive BigIP to 11.10.1.1943 version, I downloaded BIGIP-11.1.0.1943.0.iso and BIGIP-11.1.0.1943.0.iso.md5 from F5downloads website.

 

 

Before starting the upgrade, I would like to check the ISO file.

 

 

md5sum BIGIP-11.1.0.1943.0.iso

 

ef58015b152179b95bcce9d4331ba559 BIGIP-11.1.0.1943.0.iso

 

 

cat BIGIP-11.1.0.1943.0.iso.md5

 

1a44eca3d6b0fd9826120b130b9f00fd BIGIP-11.1.0.1943.0.iso

 

 

As you can see results mismatch.

 

 

I checked all size files and It seems correct.

 

 

Do you have any idea why it mismatches ?

 

 

 

Thank you

 

config
design
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Mar 23, 2012
    Hi Alex,

     

     

    The ISO I have downloaded matches the .md5 file's checksum. I would download the file again.

     

     

    Which protocol did you use to download the file from downloads.f5.com? If you chose FTP and used an FTP client, is it possible the transfer was set for ASCII? Else, maybe the download just became corrupt regardless of the protocol used.

     

     

    Aaron
  • Alex34_3323's avatar
    Alex34_3323
    Icon for Nimbostratus rankNimbostratus
    Mar 29, 2012
    Hello Aaron,

     

     

    It was my anti-virus which corrupted the file.

     

     

    Thanks,

     

    Alex
  • IRONMAN_183357's avatar
    IRONMAN_183357
    Icon for Nimbostratus rankNimbostratus
    Aug 07, 2017

    Hi,

     

    Why we using md5sum command base image and cat for md5 file to verify? any reason?

     

  • boneyard's avatar
    boneyard
    Icon for MVP rankMVP
    Aug 07, 2017

    IRONMAN please start a new question, that makes it clearer for others to find it.

     

    md5sum calculates a MD5 value of file the cat on the MD5 file shows the value that F5 calculated on that same file

     

    comparing these two values makes makes sure it is correct.