Administrator Guide

● You disconnect the master switch from the stack.
NOTE: If a stack unit does not boot up at the same time as the other units, it does not participate in the election process.
Units that boot up late do not participate in the election process because the master and standby have already been
elected. The unit that boots up late (even if they have a higher priority configured) joins as a member.
To display the PE stack master, enter the show pe pe—id system brief command.
The following example shows output from an established stack.
Example of Displaying Stack Members
Dell#show pe 0 system brief
Stack MAC: a0:68:00:3f:92:bc
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
---------------------------------------------------------------------------
0 Management online C1048P C1048P 1-0(0-4879) 52
1 Member online C1048P C1048P 1-0(0-4879) 52
2 Standby online C1048P C1048P 1-0(0-4879) 52
3 Member online C1048P C1048P 1-0(0-4879) 52
4 Member online C1048P C1048P 1-0(0-4879) 52
5 Member online C1048P C1048P 1-0(0-4879) 52
6 Member online C1048P C1048P 1-0(0-4879) 52
7 Member online C1048P C1048P 1-0(0-4879) 52
Important Points to Remember
● You can stack up to eight port extenders.
● You cannot stack C1048P port extenders with other system types.
● You can stack N20xx series devices with only N20xx series devices.
● You can stack N30xx series devices with only N30xx series devices.
● Set up a PE stack by using the dedicated stacking ports on the back panel. Dell Networking recommends using a ring
topology for a PE stack.
● All stack units must have the same version of Dell Networking OS.
● When you restore the factory-default settings on all units in a stack, the units are placed in standalone mode.
● Dell Networking recommends connecting more than one PE stack unit to the C9010 for redundancy. (Individual PE stack
members do not require a separate uplink to a parent C9010 because they use the stacking connection to the master PE for
their C9010 uplink.)
PE Stack Configuration
You can perform the following configuration tasks for PE stacking.
NOTE: The recommended mode for PE dual homed stack configuration is Configuration Terminal Batch mode.
Configuring a PE Stack
Before you start, ensure that the PE stack units are cabled in a ring topology, powered on, and that one or more stack units are
attached to a 10GbE port on the parent C9010. For detailed information, see the Dell Networking C1048P Getting Started Guide
or Dell Networking C1048P Installation Guide.
From a console attached to the C9010 or through a Telnet session to the C9010 management port:
1. Turn on support for the port-extender configuration on a C9010.
CONFIGURATION mode
feature extended-bridge
Port Extender (PE) Stacking
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