VCCMask

Console Commands

Use VCCMask (virtual channel connection mask) to manage the combination of VPI (virtual path identifier) bit and VCI (virtual channel identifier) bit settings. There are only four different VCC mask entries allowed by the switch and the VPI and VCI shift must total 12.

SERVER SVC

Operators

modify, show

Parameters

Input Parameter	Description	Value/Field Size	Default

[MaskIndex]	Index of mask to be changed.	0-3	0
[VpiShift]	Current number of bits assigned for use by the	0-12	0
	VPI, for each of the four mask indexes.
[VciShift]	Current number of bits assigned for use by the	0-12	12
	VCI, for each of the four mask indexes.

Descriptions

Operator	Parameters/Permissions	Description

modify [MaskIndex] <maskindex>

vccmask [VpiShift] <vpishift>

[VciShift] <vcishift>

Administrator

Modifies the proportion of bits assigned to the VPI and VCI for a given VCC or VPI/VCI set. The combined total of VPI and VCI bits must equal 12. The four most common VCC masks are predefined in the system (see modify portconfig ). When modifying a VPI/VCI set, you must specify the VCC mask by using the mask index identifier. If you modify a specific mask index, for example a VPI/VCI set is modified from 6/6 to 7/5, you will modify occurrences of the 6/6 configuration on all ports, as only four different VCC masks configurations can exist at any one time.

2-204 SmartCell 6A000/ZX-250 Reference Manual

6A000/ZX-250 specifications

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In conclusion, Cabletron Systems’ 6A000/ZX-250 is a comprehensive solution for networking requirements, blending performance and flexibility with advanced technological features. Its ability to adapt to various network types and protocols, coupled with robust management tools, positions it as a valuable asset for any organization looking to streamline its operations and enhance connectivity.

Cabletron Systems 6A000/ZX-250 VCCMask, Modify MaskIndex maskindex Vccmask VpiShift vpishift

Models: 6A000/ZX-250