Bug ID 774261: PVA client-side current connections stat does not decrease properly

Last Modified: Jun 10, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4

Fixed In:
15.1.0

Opened: Apr 18, 2019
Severity: 4-Minor

Symptoms

When FTP is used with bigproto, the PVA client-side current connections stat does not decrease after connections are closed.

Impact

An incorrect stat for client-side current connections will be reported for 'tmsh show sys pva-traffic global' and 'tmctl pva_stat'. Example: config # tmsh show sys pva-traffic global ------------------------------------------------- Sys::PVA ------------------------------------------------- PVA Traffic ClientSide ServerSide Bits In 23.6K 219.7K Bits Out 219.7K 23.6K Packets In 40 335 Packets Out 335 40 Current Connections 295 0 <----- Maximum Connections 296 8 Total Connections 335 40 Miscellaneous Cur PVA Assist Conns 0 Tot PVA Assist Conns 335 HW Syncookies Generated 0 HW Syncookies Detected 0 config # tmsh show sys conn all-properties Really display 1000 connections? (y/n) y Sys::Connections Total records returned: 0 <--------- No connections; this is the correct state.

Conditions

-- Use an FTP virtual server. -- End user clients connect to the virtual server.

Workaround

This issue does not occur when 'inherit parent profile' is enabled on the FTP profile used by the virtual server.

Fix Information

The client-side current connections stat is decreased when connections are closed. 'tmsh show sys pva-traffic global' and 'tmctl pva_stat' now show accurate data.

Behavior Change