Cabletron Systems SmartCell 6A000 User Manual page 63

Switch Administration
For example, enter the
show porttrafficcongestion
SmartCell ZX # show porttrafficcongestion
PortNumber(ALL)
Port ID Queue 1
Min Max
============================================================================
A1 20 1000
A2 20 1000
A3 20 1000
A4 20 1000
B1 20 1000
B2 20 1000
B3 20 1000
B4(CPU) 20 1000
C1 20 1000
C2 20 1000
C3 20 1000
C4 20 1000
D1 20 1000
D2 20 1000
D3 20 1000
D4 20 1000
SmartCell ZX #
Min and Max are thresholds set on a per-queue, per-port basis and are measured in cells (53 bytes). The Min threshold
is the amount of buffer space guaranteed to a call of a particular QoS on the corresponding port. The Max threshold is
the maximum amount of buffer space that a call of a particular QoS is allowed on the corresponding port.
QoS corresponds to the queues as follows:
•
Queue 1 — Constant Bit Rate (CBR)
•
Queue 2 — Real Time Variable Bit Rate (rt-VBR)
•
Queue 3 — Non-real time Variable Bit Rate (Nrt-VBR)
•
Queue 4 — Unspecified Bit Rate (UBR)
If calls of a particular QoS type are being dropped on a particular port, use the
to raise the port's queue Min threshold.
For example, to change both the Min and Max amounts of buffer space used for CBR calls on port
following:
SmartCell ZX # set porttrafficcongestion
Port(ALL)
Queue1MinimumCellCounter(20)
Queue2MinimumCellCounter(20)
Queue3MinimumCellCounter(20)
Queue4MinimumCellCounter(20)
Queue1MaximumCellCounter(1000)
Queue2MaximumCellCounter(2000)
Queue3MaximumCellCounter(1000)
Queue4MaximumCellCounter(16384)
SmartCell ZX #
command to view current buffer utilization.
:
Queue 2 Queue 3
Min Max Min Max
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
20 2000 20 1000
: a3
: 1000 < Min for CBR queue
:
:
:
: 10000 < Max for CBR queue
:
:
:
Queue 4
Min Max
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
20 16384
set porttrafficcongestion
SmartCell 6A000 User Guide 4-21
Traffic Management
command
, enter the
a3