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

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danielo303_1961's avatar
danielo303_1961
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Dec 11, 2012

Runaway Connection Counts on Virtual Server

  We have a BigIP 1500 running 9.4.3 which handles about 100 VIP's. The LTM does SSL offload for the backend servers, which are mostly tomcat/http. Throughput is around 60Mbps and average SSL TP...
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danielo303_1961's avatar
danielo303_1961
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Jan 08, 2013
Rebooted both members of the failover pair about a week abo and the connections are still climbing. Currently the LTM has ~105k connections, for which this one VIP is using 103k. Not sure how it's possible to even go above 65,000 but we are. We are considering creating a second VIP pointing to the same pool, and do DNS round-robin on the front end to distribute these high connections.

 

 

Other than the scary connection counts everything seems to be working okay now.