When the controller wants to delete a group table entry, then it sends a group table modification message (OFPT_GROUP_MOD
) to the switch. This group table modification message contains the necessary information required to delete the group entry which includes the flow group identifier, bucket list and so on.
The message format used by the controller to send the OFPT_GROUP_MOD
is defined in the Adding a new group entry in a group table recipe in Chapter 4, Group Table and Meter Table modification Messages (Part 1). Here, to delete a group table entry, the command field is set as OFPGC_DELETE
.
While processing the group delete message by the switch, if there are no matching entries with a specified identifier present, then the switch should ignore...