7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
Description
On 7210 SAS-T, the user has an option to configure the MBS pool per node or per port. This command
allows the user to configure the MBS pool as per their requirement. A reboot is needed whenever the value
of this parameter is changed for the new values to take effect.
If the users configure a per node MBS pool, then each of the 8 queues available on a port is allocated a
CBS amount of committed buffers. The remaining amount of buffers is allocated towards the MBS pool that
is available for sharing among all the queues across all the ports of the node. In other words the MBS pool
is per node.
If the users configure a per port MBS pool, the available buffers are equally divided up among the all
the ports of the node. With this scheme of allocation, each port gets some portion of the buffers for its
exclusive use. Some of these buffers are allocated towards the CBS per queue and the rest is assigned
to the per port MBS pool. To allow operators better control over which ports get larger portion of queue
buffers, operator is provided with an option to decommission ports. The commands associated with
decommissioning of ports are only allowed when the node is booted with the option to use per-port MBS
pool. In other words, decommission entries are executed only if the mbs-pool parameter is set to port.
If the mbs-pool parameter is set to node and decommission entries are configured, then an error should
be reported. All decommission entries must be removed if the mbs-pool parameter needs to be changed
from port to node.
Default
node
Parameters
node
Keyword to use per-node MBS pool.
port
Keyword to use per-port MBS pool, along with an option to relocate buffers to ports that
need better burst handling capability using the decommissioning commands.
port-scheduler-mode
Syntax
port-scheduler-mode
no port-scheduler-mode
Context
config>system>resource-profile>qos
Platforms
7210 SAS-Mxp
Description
This command configures the queuing mode to be used for SAPs configured on all the ports of the node.
3HE 18197 AAAB TQZZA
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