Service Manual

Stack-unit 1 unit 0 port 5 (interface te 1/4/1)
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Q# TYPE Q# TOTAL BUFFERED CELLS
Instance 1 Instance 2 Instance 3 Instance 4 Instance 5
10S 20S 30S 40S 50S
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UCAST 2 5 4 6 0 1
UCAST 3 2 0 1 5 0
UCAST 11 0 3 2 0 3
MCAST 4 0 0 0 0 3
If only two instances are available at the time the above show command is issued, only two instances is displayed in the summary output.
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Q# TYPE Q# TOTAL BUFFERED CELLS
Instance 1 Instance 2
10S 20S
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UCAST 2 5 4 1
UCAST 3 2 0
UCAST 11 0 3
MCAST 4 0 0
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource port 5 prio-group all history summary
Stack-unit 1 unit 0 port 5 (interface te 1/4/1)
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PG# Instance 1 Instance 2 Instance 3 Instance 4 Instance 5
Shared Hdrm Shared Hdrm Shared Hdrm Shared Hdrm Shared Hdrm [in CELLS]
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6 9 2 0 0 1 0 4 1 7
1
7 0 0 0 0 1 0 0 0 0
0
In the following example, the Headroom Cells eld indicates the amount of shared buer area that is allocated to store packets that are received after the pause
frame is received or a priority-based ow control pause frame is enabled. When an inbound interface halts the sending of trac, it must have the buer space
to save all of the packets currently in the buer, and also all of the packets that were received before the device stops the sending of packets. Headroom space
is used for high-priority trac that needs to be queued and preserved above the input queue limit, such as keepalives and hello messages.
You can use the following sample command output to obtain a consolidated, whole-scale set of statistical counters of buer resource utilization in the system
and identify the ports that you want. All resources will be cleared after their values are displayed.
Dell#show hardware stack-unit 1 buffer-stats-snapshot unit 0 resource all
Stack-unit: 1 unit: 0 port: 1 (interface Fo 1/1)
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PG# SHARED CELLS HEADROOM CELLS
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0 0 0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
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Q# TYPE Q# TOTAL BUFFERED CELLS
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434
Data Center Bridging (DCB)