Forum Discussion
pullb0x
Nimbostratus
NimbostratusBackend Server respond with * LibreSSL SSL_read: Connection reset by peer, errno 54
Hi I am new to F5 and LTM and apologize if this is the wrong forum or if I am not providing the appropriate information etc. I have a custom mobile app I wrote where via custom headers I want to ...
Amine_Kadimi
MVP
MVPTry to log the reset cause (https://my.f5.com/manage/s/article/K13223) and see if F5 provides any cause for the reset packet.
Since the iRule logs goes up to the HTTP request, I suspect either a connection problem with the server or a pool member selection failure, the reset logs will tell you
pullb0xThank you so much for the feedback.
After I enabled it, this is what I am seeing.
-------------------------------------------
TCP/IP Reset Cause
RST Cause: Count
-------------------------------------------
Flow expired (sweeper) 4
No flow found for ACK 1
No local listener 32027
No server selected 1
RST from BIG-IP internal Linux host 187450
TCP RST from remote system 3
TCP retransmit timeout 172
handshake timeout 4- Amine_Kadimi
These are only statistical counters, you need to look at /var/log/ltm or tcpdump to find the message related to the reset cause
- pullb0x
Appreciate all your help. I am a novice in reading pcap files.
Below screenshot of the traffic
ip ending
...209 = F5
...35 = my endpoint
.6 = mobile device
per the screenshot traffic from .6 (mobile device) to .35 (endpoint) is TCP retransmission.
What do I have to look at to see what is causing this?
Apologize again if this is kind of a stupid question but I am a noob in this.
Appreciate pointing me in the right direction.
Thank you