To allow operators better control over which ports get larger portion of queue buffers, the operator is provided with an option to use per-port MBS pool and decommission ports. The decommissioning of ports is only allowed when the node is booted with the option to use per-port MBS pool.
With the decommissioning feature, the user is provided with an option to make efficient use of the available port egress queue buffer pool by allocating queue buffers of the unused ports to in-use ports. It allows the user to specify the unused front-panel ports which cannot be used to deploy any services. The software does not allocate any queue buffers to these unused ports and assigns it to a specific port or a group of ports. The user is provided with a CLI command to decommission a port and make it unavailable to deploy services. This mechanism allows operators who use limited number of ports to deploy services, to increase the amount of queue buffers allocated to them by decommissioning ports that will not be used to deploy any services.