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zreg - Read and write registers and tables on the OpenArchitect switch switching hardware.

zreg [-p <ppa>] [-w] [-i <index>] [-t <index>] [-k] [-h 

<hostname>] [-d <level>] [-r 10] <reg>

zreg allows a user to read and write direct and indirect registers and tables on the resident 
switch chip. zreg is commonly used for debug, or for prototyping when creating applications 
that control the OpenArchitect switch. It is also useful when put into shell scripts for displaying 
hardware status or statistics. Although the -t option allows tables to be displayed, one might find 
the formatted output of the table functions more useful. See zal.

-p <ppa>

Specify the Physical Point of Attachment (PPA). Each 

OpenArchitect switch that is controlled by the CPU on which zreg 

is running is a unique PPA. If there is only one OpenArchitect 
switch, as would be the case when zreg is running on the embedded 

processor the PPA would be 0. The default PPA is 0. 

-w

Causes zreg to write to the register or table. Data to be 

written is read from standard input.

-i <index> Causes zreg to access at the indexed register 

specified by <reg>. See OPERANDS for usage of <reg> with indexed 
registers. The <index> parameter is used to determine which entry 

i

-t <index> Causes zreg to access the memory specified by <reg>. 
The <index> parameter is used as the index into the specified 

table. Only content addressable memories are accessed using the –
t option. All other tables and memories are accessed with the –i 

option.

-k

Causes zreg to access the memory specified by <reg>. The 

entry accessed is determined using the data from standard input 

as the search key.  Enter 0 for fields that are not part of the 
search key. 

-h <hostname>

Specify the <hostname> to configure. By default 

zreg configures the OpenArchitect switch that is locally 

Ethernet Switch Blade User's Guide

release  3.2.2j

page  322