Addendum

Viewing Buffer Utilization and Queue Statistics on High-
Gigabit Ethernet Backplane Ports
You can view the buffer utilization and queue statistical counters for high-Gigabit Ethernet ports or trunk
groups that operate as backplane ports. This functionality is supported on the Z9000 platform.
You can now view the queue statistics and buffer utilization counters for the internal leaf port and spine
port queues on a Z9000 platform using the appropriate show commands. Transmit and receive counters,
and drop counters per queue are computed and displayed for internal queues on high-Gigabit Ethernet
ports in the leaf and spine nodes on the Z9000 platform. Buffer utilization counters supported for front-
end ports are extended to high-Gigabit backplane ports.
Buffer counters include a new metric or parameter called Total Count cells. This field contains the total
number of cells currently being used by all queues on all ports in a portpipe. The f10-bp-stats.mib is for
statistics collection of backplane ports. For Z9000, valid backplane ports for leaf NPU units range from
34-41 and for spine NPU units range from 1-16. In a Card Type (slot), NPUT units are always indexed
starting with the leaf NPU units and then proceeding to the spine NPU units.
In an NPU unit, the port numbering of backplane local ports starts from the end of the last front-end
local port ID used.
Until Dell Networking OS Release 9.2.0.0, the show commands display the statistics other than the details
computed by the buffer statistics tracking counters for the egress queues. You can now use the relevant
show commands to display the ingress counters that are not part of the counters that are calculated by
the buffer statistics tracking method for each port per priority group. You can use the
show hardware
stack-unit <unit-num> buffer unit <unit-num> command to display the buffer statistics and
queue information. You can use the
clear hardware stack-unit <unit-num> command to reset
the statistical details associated with high-Gigabit Ethernet ports. This functionality is supported on the
Z9000 platform.
The following commands are enhanced to display the buffer statistics tracking counters for high-Gigabit
backplane ports on the Z9000 platform:
• show hardware stack-unit 0 buffer unit 0 total-buffer
----- Buffer Details for Unit 0 -----
Used Packet Buffer for the Unit: 0
Current Available Packet Buffer for the Unit: 46080
Is Dynamic Packet Buffer allocate for the unit: TRUE
FTOS#
In the preceding sample output that is displayed, which is a portion of the complete output that is
shown when you run this command, the shared buffer space that is available to be allotted to the
specific port for the corresponding stack unit, the shared buffer space that is in use by the packets,
and whether dynamic packet buffering allocation is activated are displayed.
• show hardware stack-unit 0 buffer unit {0-5} port all buffer-info—Supports
backplane or high-Gigabit ports of all queues for all ports in a specific unit.
• show hardware stack-unit 0 buffer unit {0-5} port {1-41} queue {1-14} buffer-
info—Supports backplane HG ports of all units for a specific port and queue in a unit.
• show hardware stack-unit 0 buffer unit {0-5} port {1-41} buffer-info—Supports
backplane high-Gigabit port for switch fabric or spine units for a specific port.
• show hardware stack-unit 0 buffer unit {0-5} port all queue all buffer-info—
Supports backplane high-Gigabit ports of all units for all queues of all ports in a unit.
170
Link Aggregation Groups (LAGs)