Cabletron Systems 6A000-ZX-250 User Manual
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Console Commands

SwitchTrafficCongestion

Use SwitchTrafficCongestion to manage global switch traffic congestion thresholds on the switch.

SERVER SVC

X X

Operators

modify, show

Parameters

Parameter

Description

Value/Field Size

Default

 

 

 

 

[Queue # EFCI Threshold]

Threshold used to trigger EFCI

1, 2, 3, 4.../

16383

 

(explicit forward congestion

n/a

 

 

indicator) cell marking in the

 

 

 

switch for the specified priority

 

 

 

queue (where “#” is 1, 2, 3, or 4).

 

 

[Low EPD Watermark/Threshold]

Threshold (in cells) used by the

1, 2, 3, 4.../

5461

 

switch to trigger low EPD (early

n/a

 

 

packet discard), EFCI, and

 

 

 

backward RM (resource

 

 

 

management) cell marking.

 

 

[High EPD Watermark/Threshold]

Threshold (in cells) the switch

0-16951

7551

 

uses to trigger high EPD.

 

 

[Switch Discard Threshold]

Threshold the switch uses to

1, 2, 3, 4.../

n/a

 

discard cells when the memory

n/a

 

 

buffer is full.

 

 

[RM Cell Marking Enable]

Indicates whether RM cell

OFF (disable) or

ON

 

marking is enabled across the

ON (enable)

 

 

switch.

 

 

[EFCI Marking Enable]

Indicates whether the EFCI cell is

OFF (disable) or

ON

 

enabled on the switch.

ON (enable)

 

SmartCell 6A000/ZX-250Reference Manual2-189

Console Commands

Descriptions

Operator

Parameters/Permissions

Descriptions

 

 

 

modify [Queue#EFCIThreshold]switchtrafficcongestion <queue#efcithreshold>

[LowEPDWatermark]

<lowepdwatermark>

[HighEPDWatermark]

<highepdwatermark>

[RMCellMarkingEnable]

<rmcellmarkingenable>

[EFCIMarkingEnable]

<efcimarkingenable>

Modifies the congestion control parameters for the switch. For example, the EFCI thresholds indicate when a threshold is exceeded; the switch discard threshold discards cells when the memory buffer is full. 1 enables the parameters [RMCellMarkingEnable] and [EFCIMarkingEnable]. 0 disables them.

show switchtrafficcongestion

Administrator

 

All

Displays the current traffic congestion settings

 

for the switch.

Examples

switch_prompt # modify switchtrafficcongestion

Queue1EFCIThreshold(16383)

: 2000

Queue2EFCIThreshold(16383)

: 2000

Queue3EFCIThreshold(16383)

: 2000

Queue4EFCIThreshold(16383)

: 2000

LowEPDWatermark(7552)

: 4000

HighEPDWatermark(7552)

: 8000

RMCellMarkingEnable(0)

: 1

EFCIMarkingEnable(0)

: 1

switch_prompt #

 

switch_prompt # show switchtrafficcongestion

Switch Traffic Congestion Parameters

===========================================================================

Queue 1

EFCI Threshold (cells)

: 16383

Queue 2

EFCI Threshold (cells)

: 16383

Queue 3

EFCI Threshold (cells)

: 16383

Queue 4

EFCI Threshold (cells)

: 16383

Low EPD

Threshold (cells)

: 7551

High EPD Threshold (cells)

: 7551

Switch Discard Threshold (cells) : 15103

RM Cell

Marking Enable

: 0

EFCI Enable

: 0

switch_prompt #

 

2-190SmartCell6A000/ZX-250Reference Manual