Related Documentation
Configuring Packet Distribution Settings
Flow affinity distribution is based on a hash distribution. Flow affinity is already the default behavior for the control CPUs, but the default behavior for distributing data packets over data cores is in a round-robin fashion.
You can change the default behavior for the data cores from round-robin to flow affinity by adding the data-flow-affinity statement at the [edit chassis fpc slot-number pic pic-number adaptive-services service-package extension-provider] hierarchy level.
Some applications may need you to set the hash-key statement (consult application-specific documentation). The options for the hash-key statement are 3-tuple hashing (source IP, destination IP address, and IP protocol) or 5-tuple hashing (3-tuple plus source and destination TCP or UDP ports). If the hash-key statement is not configured, the default value is 5-tuple. There is no need to differentiate the hashing between control and data traffic.
 | Note: When the extension-provider statement is first configured, the PIC reboots. Either adding or removing the data-flow-affinity statement causes the PIC to reboot. |
