Forum Discussion
You mean what BIG-IP version I am running? If yes 14.1.5.3.
seamlessfirework The syntax in the iRule seems to be correct, supported on this code version, and I don't see any bugs relating to this specific action. You might consider running the following tcpdump and opening it up in wireshark to see what the F5 is doing with it.
tcpdump -nni 0.0:nnp host <first_virtual_server_IP> -w /shared/tmp/VS_Tshoot.pcap
This should show you exactly where the traffic is going if you look at the F5 field that will be added into the capture. It might be worth uploading a QKVIEW to iHealth and see if it can find anything as well.
- seamlessfireworkSep 29, 2023Cirrus
Paulius Thanks for your quick hint. An upload to iHealth is not possible. Sorry. But I did a capture and found something strange to me. The BIG-IP sends a TCP reset because of an iRule execution error. Have a look at the F5 trailer
F5 Ethernet Trailer Protocol F5 Trailer Header - Version: 1 Magic: 0xf5deb0f5 Length: 122 Version: 1 Low Details F5 Trailer Header, Provider: 1, Type: 1 Provider: 1 Type: 1 Trailer length: 44 Version: 2 Ingress: False (OUT) Slot (1-based): 1 TMM (0-based): 2 Virtual Server: /Common/VirtualServer-443 Length: 32 Name: /Common/VirtualServer-443 Medium Details F5 Trailer Header, Provider: 1, Type: 2 Provider: 1 Type: 2 Trailer length: 70 Version: 4 Flow ID: 0x00004001830ea800 Peer ID: 0x0000000000000000 Connflow Flags High Bits: 0x01202080 Connflow Flags: 0x04808024 Flow Type: 0x40 HA Unit: 0x01 Reserved: 0x00010008 Priority: 3 RST cause: [294f5e2:1864] iRule execution error Length: 30 0000 000. = Version: 0 (0x00) .... ...0 = Peer: 0 Value: 0x00000294f5e2 Line: 1864 Cause: iRule execution error
I've never seen that before to be honest.
- PauliusSep 29, 2023MVP
seamlessfirework Are you seeing any errors generated in the F5 ltm logs for the iRule applied to either of the virtual servers?
- seamlessfireworkSep 30, 2023Cirrus
Paulius I had the same thought but there is no error in the log. I opened a support case. I'm curios what they say about this issue.