sathish_126179
May 21, 2014Nimbostratus
F5 LTM - Unable to download 5MB file
We are having an issue while trying to download a CSV file (size 5MB) via F5 LTM (version: 11.3.0). The file gets downloaded successfully when tried from backend application server. The Application server takes around 8mins to retrieve the data and downloading the file. While trying with BIG-IP LTM tries for quite some time and eventually throws "page cannot be displayed error". I guess LTM session gets timed out. Interestingly this works for smaller CSV files which are in few KBs.
Following are the settings related to LB:
- Standard virtual server with LB virtual IP listening on port 443 (HTTPS)
- tcp-wan-optimzed & tcp-lan-optimized applied for client & server profiles
- No persistence profiles used
- Automap used for Source Address Translation
- Backend servers runs in port: 443 with "https" health monitor
Can someone throw some light on which TCP parameter needs to be fine-tuned for resolving this issues? Any help on this will be highly appreciated.