Service Manual

Usage Information The following information is displayed depending on whether the historical snapshot of buer statistics is
needed for all ports, per-port per-queue, or a priority group.
• All – Displays all resources on ingress and egress for each of the port, queue.
• Port-Queue ucast/mcast – Displays the total unicast/multicast buer usage on per-port per-queue
basis. For CPU port, counters for queues 0 – 11 are displayed and no dierentiation is made between
unicast and multicast queues.
• Port- Priority-Group – Displays the shared space counters usage, head-room space counters per ingress
port on per-priority- group granularity.
When the buer-stats-snapshot is disabled, an informational message is dispayed to this eect when you
attempt to view the buer statistics tracking resource information without polling details and historical
snapshots.
Example
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource port 1 queue ucast all
Stack-unit: 1 unit: 0 port: 1 (interface Fo 1/4)
---------------------------------------
Q# TYPE Q# TOTAL BUFFERED CELLS
---------------------------------------
UCAST 0 0
UCAST 1 0
UCAST 2 0
UCAST 3 0
UCAST 4 0
UCAST 5 0
UCAST 6 0
UCAST 7 0
UCAST 8 0
UCAST 9 0
UCAST 10 0
UCAST 11 0
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource port 5 queue all
Stack-unit 1 unit 0 port 5 (interface te 1/4/1)
---------------------------------------------------------------------------------------------------------------
Q# TYPE Q# TOTAL BUFFERED CELLS
---------------------------------------------------------------------------------------------------------------
UCAST 5 4
UCAST 6 8
UCAST 11 1
MCAST 4 11
Only the queues for which the buer cell consumption is not zero are displayed. If an egress buer is not present on any of the queues on port 5, the following
sample output is displayed:
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource port 5 queue all
Stack-unit 1 unit 0 port 5 (interface te 1/4/1)
---------------------------------------------------------------------------------------------------------------
Q# TYPE Q# TOTAL BUFFERED CELLS
---------------------------------------------------------------------------------------------------------------
-
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource port 5 prio-group all
Stack-unit 1 unit 0 port 5 (interface te 1/4/1)
---------------------------------------------------------------------------------------------------------------
PG# SHARED CELLS HEADROOM CELLS
470
Debugging and Diagnostics