Using Port Buffering

Port buffering allocates storage for packets that cannot be immediately forwarded or processed on a port. To display port buffer information, use the port-buffer-show command. This command displays ingress and egress buffer utilization for each port.

CLI (network-admin@switch) > port-buffer-show


Display port buffer information.

time date/time: yyyy-mm-ddThh:mm:ss

Time to start statistics collection.

start-time date/time: yyyy-mm-ddThh:mm:ss

Start time of statistics collection

end-time date/time: yyyy-mm-ddThh:mm:ss

End time of statistics collection

duration duration: #d#h#m#s

Duration of statistics collection

interval duration: #d#h#m#s

Interval between statistics collection.


Specify to display port buffering since start.

older-than duration: #d#h#m#s

Specify an older-than time to display port buffering.

within-last duration: #d#h#m#s

Specify a within-last time to display port buffering.

port port-list

The list of ports.

CLI (network-admin@switch) > port-buffer-show

switch port ingress-used-buf ingress-used-buf-val egress-used-buf egress-used-buf-val 

------ ---- ---------------- -------------------- --------------- ------------------- 

Leaf1  25   0%               0                    0%              0                   

Leaf1  27   0%               0                    0%              0                   

Leaf1  28   0%               0                    0%              0                   

Leaf1  45   0%               0                    0%              0                   

Leaf1  49   0%               0                    0%              0                   

Leaf1  53   0%               0                    0%              0                   

Leaf1  65   0%               0                    0%              0                   

Leaf1  69   0%               0                    0%              0                   

Leaf1  70   0%               0                    0%              0                   

Leaf1  71   0%               0                    0%              0                   

Leaf1  72   0%               0                    0%              0

 Use the port-buffer-settings-modify command to enable the collection of port buffer information and to modify the logging interval and buffer size for the command output above.

CLI (network-admin@switch) > port-buffer-settings-modify


Modify port buffer settings.


Specify if you want to enable or disable the collection of port buffer information.

interval duration: #d#h#m#s

Specify the interval for the logging of port buffer information.

disk-space disk-space-number

Specify the amount of memory to be allotted for the collection of port buffering information. The default value is 50MB.

For example, to set an interval of 2 minutes for logging port buffer information, use the command:

CLI (network-admin@switch) > port-buffer-settings-modify interval 2m

To display the port buffering settings, use the port-buffer-settings-show command:

CLI (network-admin@switch) > port-buffer-settings-show

switch: switch

enable: yes

interval: 2m

disk-space: 50M