System Management
514
7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
3HE 16132 AAAB TQZZA Edition: 01
Supported
Platforms
7210 SAS-M (network and access-uplink) and 7210 SAS-T (network and access-uplink)
Description This command decommissions a port or group of ports and allocates buffers to ports that
need more packet buffers for absorbing larger bursts. It allows the user to configure the
entries which list the ports to be decommissioned. Ports whose packet buffers are taken away
are given on the left-hand of the to keyword, and ports to which buffers are allocated to are
given on the right-hand side.
This command allows the user to specify either a port or a group of ports on both sides, using
a list or range of ports. This allows the user to decommission a single port and allocate buffers
to a single port or group of ports, or decommission a group of ports and allocate buffers to a
single port or group of ports.
Packet buffers taken away from a port or group of ports specified on the left-hand side are
distributed equally among the group of ports, if the right-hand side of the to keyword specifies
a group of ports or to the configured port if the right-hand side specifies a single port. Packet
buffers are added to the MBS pool of the port (the MBS pool is shared by the 8 queues on
the port) and the CBS portion of the queues is not modified.
The administrative and operational states of the port are not affected by configuring the port
in a decommission entry.
The software maintains two lists of entries, one which is in effect currently and one which has
been modified by the user and takes effect during 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 upon reboot, the modified entries and new entries (if any) take
effect.
The following guidelines are to be adhered while configuring the entry command.
• A port cannot be specified more than once in any of the entries. In other words, if two
entries specify the same port ID, the software errors out the last entry which has the
same port ID.
• A port appearing on the left-hand side of the to keyword in any entry cannot appear on
the right-hand side of any other entries (including the same entry) and the converse also
holds true.
• If the user has specified a group of ports using a port range, the software expands the
range to a list of ports and then makes the required checks (that is, checks listed in the
first and second bullets) for each port in the list with the list of currently configured group
of ports.
Note:
• Any changes to the command, example - modifying the list of ports in existing entries
or execution of no entry command or addition of new entries, takes effect only after a
reboot of the node. The user is allowed to make change when the node is up, but the
changes does not happen until a reboot of the system.
• The ports on the CES MDA cannot be specified in the decommission command.