Cabletron Systems SmartCell ZX-250, User Manual

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SmartCell ZX-250 User Guide 4-21
Switch Administration Traffic Management
For example, enter the
show porttrafficcongestion
command to view current buffer utilization.
SmartCell ZX # show porttrafficcongestion
PortNumber(ALL) :
Port ID Queue 1 Queue 2 Queue 3 Queue 4
Min Max Min Max Min Max Min Max
============================================================================
A1 20 1000 20 2000 20 1000 20 16384
A2 20 1000 20 2000 20 1000 20 16384
A3 20 1000 20 2000 20 1000 20 16384
A4 20 1000 20 2000 20 1000 20 16384
B1 20 1000 20 2000 20 1000 20 16384
B2 20 1000 20 2000 20 1000 20 16384
B3 20 1000 20 2000 20 1000 20 16384
B4(CPU) 20 1000 20 2000 20 1000 20 16384
C1 20 1000 20 2000 20 1000 20 16384
C2 20 1000 20 2000 20 1000 20 16384
C3 20 1000 20 2000 20 1000 20 16384
C4 20 1000 20 2000 20 1000 20 16384
D1 20 1000 20 2000 20 1000 20 16384
D2 20 1000 20 2000 20 1000 20 16384
D3 20 1000 20 2000 20 1000 20 16384
D4 20 1000 20 2000 20 1000 20 16384
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:
U
Queue 1 — Constant Bit Rate (CBR)
U
Queue 2 — Real Time Variable Bit Rate (rt-VBR)
U
Queue 3 — Non-real Time Variable Bit Rate (Nrt-VBR)
U
Queue 4 — Unspecified Bit Rate (UBR)
If calls of a particular QoS type are being dropped on a particular port, use the
set porttrafficcongestion
command
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
a3
, enter the
following:
SmartCell ZX # set porttrafficcongestion
Port(ALL) : a3
Queue1MinimumCellCounter(20) : 1000
< Min for CBR queue
Queue2MinimumCellCounter(20) :
Queue3MinimumCellCounter(20) :
Queue4MinimumCellCounter(20) :
Queue1MaximumCellCounter(1000) : 10000
< Max for CBR queue
Queue2MaximumCellCounter(2000) :
Queue3MaximumCellCounter(1000) :
Queue4MaximumCellCounter(16384) :
SmartCell ZX #