Last Modified: Oct 16, 2023
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Opened: Jan 18, 2017 Severity: 3-Major
When a virtual address is using selective ICMP-echo and the virtual address is disabled, it will sometimes respond to ICMP echo requests, and sometimes not.
The ICMP echo behavior is different depending on where the virtual address is disabled.
The difference appears to depend on where the virtual address is disabled. 1) If the virtual address is disabled in the virtual address settings page in the GUI: [Local Traffic :: Virtual Servers : Virtual Address List :: <address>] it stops responding to pings. 2) If the virtual address is disabled on the virtual address list page in the GUI: [Local Traffic :: Virtual Servers : Virtual Address List] it responds to pings. 3) If the virtual address is disabled with TMSH: 'modify ltm virtual-address <address> enabled no' it responds to pings. In addition, on a BIG-IP Virtual Edition (VE), case #1 also responds to pings.
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