Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

lovleen_arora_2's avatar
lovleen_arora_2
Icon for Nimbostratus rankNimbostratus
8 years ago

F5 Migration from 3900 (11.0-HF6) to i2800 (12.1)

Hi, We have 3900 F5s running on 11.6.0.HF6 in production at the moment, and we need to replace them with i2800 series boxes. I see in the compatibility list that i2800 appliance is not compatible wit...
application delivery
LTM
Jad_Tabbara__J1's avatar
Jad_Tabbara__J1
Icon for Cirrostratus rankCirrostratus
8 years ago

Hello,

Follow theses steps :

  • Upgrade your 3900 to 12.1.2 HF1
  • Apply the HF1 on your i2900

  • Generate a UCS backup from 3900* Copy the UCS to i2900 folder /var/local/ucs* Launch the following command with argument "no-platefor-chek no-license"

    tmsh load sys ucs config.ucs no-platform-check no-license

  • Verify if all you config. has been copied correctly

Also you can read this checklist before upgrading

7 Steps Checklist before upgrading your F5 BIG-IP

Hope it helps