The configure system resource-profile decommission entry command allows the user to configure the list of ports to be decommissioned and the list of ports that need more buffers. The system does not allocate any packet buffers to the ports which are decommissioned. For more information, see the CLI command description for details on the functionality provided by the command.
Packet buffers are added to the MBS pool of the port (the MBS pool is shared by the eight queues on the port) and the CBS portions of the queues are not modified.
The user can modify the list of ports or update to the list of ports specified with the decommission command (and also entry command) when the node is up, but the changes are effected by software only after a reboot of the node.
The software maintains two lists of entries, one is the current list of ports and another which has been modified by the user and takes effect only after the next reboot. These lists can be displayed using the show command. The configuration file always stores the list of entries as configured by the user, so that, when rebooted, the modified entries and new entries (if any) take effect.
A port must be in administratively down (shutdown) state before it is added to a decommission entry. An attempt to configure a port which is in an administratively up (no shutdown) state results in an error. The administrative state or the operational state of the port is not affected by configuring the port in a decommission entry.
The decommissioned port cannot be used in any service configuration or as a loopback port. Any attempt to do so results in an error.
The user needs to ensure that enough buffers are available for the internal loopback ports or front-panel ports assigned for loopback. It is not recommended to take away buffers allocated to these ports and assign it to other ports. This may cause unintended behavior of the system. The system software does not check for this but expects users to ensure this through correct configuration.
The following configuration sample shows the ports to be decommissioned.
A:7210SAS>config>system>res-prof>decom# info detail
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entry 15 port 1/1/1,1/1/2
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A:7210SAS>config>system>res-prof>decom#
The number of ports that a port can borrow buffers from is limited and varies depending on the platform. See the 7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Basic System Configuration Guide for more information about the decommission commands.