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

Forum Discussion

m1978_295079's avatar
m1978_295079
Icon for Nimbostratus rankNimbostratus
Jun 12, 2017

Why I am able to Telnet to VIP when pool members are down ??

Why I am able to telnet to a VIP (port 443) when all pool members actually down, VS showing down as well. Could someone please explain in brief.  
big-ip
devops
irig4u_152672's avatar
irig4u_152672
Icon for Nimbostratus rankNimbostratus
Jun 12, 2017

Because the VIP you have created is listening on the IP address and the port specified