Summary
This issue is caused by how the cluster pairs communicate with one another and is resolved by a firmware upgradeOverview
This issue occurs when the SYN and SYN-ACK packets follow asymmetric paths through the Exindas in a cluster. With the SYN passing through one Exinda and the SYN-ACK passing through the other.
Cause
This issue is caused by the cluster partners not communicating details regarding the accelerated flow correctly.
When attempting to establish an accelerated conversation the sequence numbers are changed after the Exinda. The issue occured when the clustered appliances were not sharing information about these communications between each other until the connection was established.