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- Mahantesh_BisurNimbostratus
Hi Vandit,
You need to open TCP port 4353 for the communication to happen between LTM and GTM.
Please refer below link for more details https://support.f5.com/kb/en-us/products/big-ip_gtm/manuals/product/gtm-implementations-11-4-0/2.html
- Stanislas_Piro2Cumulonimbus
Hi,
As Mahantesh replied, the TCP 4353 must be opened to allow config and status synchronization.
But, bigip_add command requires SSH/SCP port opened to exchange SSL keys.
After this command is done, SSH port can be blocked.
- DomaiAltostratus
For the initial setup all 3 ports must be opened. 22, 443 and 4353. Once you finish adding other GTM and LTM's you can close 22 and 443. But you need port 4353 to be open all the time for iQuery communication between GTM's and LTM's.