Administrator Guide

HOL DROPS on COS3 : 0
HOL DROPS on COS4 : 0
HOL DROPS on COS5 : 0
Related
Commands
clear hardware system-flow — clears the statistics from selected hardware components.
show system — displays the current status of all the stack members or a specific member.
stack unit
Pre-provision the specified port-extender stack unit.
C9000 Series
Syntax
stack-unit unit-number {type unit-type | priority value}
To de-provision or delete a port extender stack unit, use the no stack-unit unit-number {type
unit-type | priority value} command.
Parameters
stack-unit unit-
number
Enter the stack-unit ID number to locate a specific stack unit. Stack unit number
range is 0–7.
type PE-type Enter a value for the stack-unit type.
priority value Enter the master priority value for the unit. The priority value range is from 1 to 14.
The unit with the numerically highest priority value is elected the master.
Default None
Command Modes PE CONFIG
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command-Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.11(0.0) Introduced the port extender types for the N20xx and N30xx series.
9.9(0.0) Introduced on the C9010.
Usage
Information
You can pre-provision a port extender stack unit using the stack unit command in the PE
configuration mode and specify the stack-unit type. Only similar types of stack units are provisioned
under a single port extender. The maximum number of stack units allowed for provisioning is 8. In a PE
stack, by default, the stack unit with the highest MAC address is elected master; the stack unit with the
second highest MAC address is elected standby. To change the default master and standby assignment,
you can assign stack-unitpriority value. If multiple units tie for the highest priority, the unit with the
highest MAC address is elected master.
In the following example, stack-unit 0 with priority 14 is the master and stack-unit 1 with priority 13 is
the standby.
NOTE: You can configure a stack-unit priority only when the unit is online.
Example (stack-
unit priority)
Dell(conf)#pe 2
Dell(conf-pe-2)#stack-unit 0 priority 14
Dell(conf-pe-2)#stack-unit 1 priority 13
Example (stack
unit type)
Dell(conf-pe-201)#stack-unit 1 type ?
C1048P 52-port GE/TE
PE Stacking 1277