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

Forum Discussion

Fernando_Carran's avatar
Fernando_Carran
Icon for Nimbostratus rankNimbostratus
7 years ago

Link Controller sync issues

Hi Folks. We tried to configure LC from standalone to HA (Active-Standby). When we run gtm_add the objects of LC was synced. After, when we try to sync from Device Management only LTM objects are s...
application delivery
big-ip
link controller
RaghavendraSY_7's avatar
RaghavendraSY_7
Icon for Cumulonimbus rankCumulonimbus
7 years ago

Please verify whether device certificates are in sync and are upto dat. if device certificate is not in sync between active and standby, wideip's will go down.

 

Fernando_Carran's avatar
Fernando_Carran
Icon for Nimbostratus rankNimbostratus
7 years ago

Hi RaghavendraSY.

 

Thank you for you advice. We resolved the issue with the next steps (with help of F5 ticket):

 

  • Rebuild the cluster. Ensure that ISP4 only using for outbound traffic. As we can see, the LC objects synced through selfi-ip, the ports we configured in port lockdown "default". The LTM objects synced through HA VLAN.

     

  • Add snat pool for outbound traffic (using self-ip for ISP4 and floating for the others ISPs). Automap create route issues when you use floating and selfips for outbound traffic. Reference: K7336