Bug ID 746460: SCTP profiles have been modified to advertise one stream unless configured otherwise

Last Modified: Aug 08, 2019

Bug Tracker

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4, 14.1.0.5, 14.1.0.6

Fixed In:
15.0.0

Opened: Oct 10, 2018
Severity: 3-Major

Symptoms

SCTP profiles used to default to two streams. When a client connects, the profile negotiates assuming that the server can accept two streams. When a server connection is established later, if the server advertises only one stream, the connection resets. This scenario results in a difficult-to-diagnose condition.

Impact

Unless otherwise explicitly configured, SCTP profiles advertises one stream only.

Conditions

If not configured, the default for SCTP profiles is now to advertise and accept only one stream in each direction.

Workaround

If more than one stream is required, configure the SCTP profile for a greater number.

Fix Information

The SCTP profile has been modified to default to a more-reliable and easier-to-understand configuration.

Behavior Change

The BIG-IP SCTP profile has been modified so that the default configuration for SCTP profiles supports 1 (one) stream.