Port Extender (Pe) Stacking; Stack Management Roles - Dell C9000 Series Networking Configuration Manual

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You can stack up to eight C1048P port extenders using the mini-SAS stack ports on the back panel. The

C1048P supports stacking only with other C1048P port extenders. Stacking is not supported on C9010

switches. To set up a PE stack, follow the installation procedure in the Dell Networking C1048P Getting

Started Guide or Dell Networking C1048P Installation Guide.

Each C1048P has 48 user ports, two uplink ports, and two stack-ports. When you connect multiple C1048Ps

together through the stack ports, they operate as a single unit with up to 384 front panel ports. The port

extender stack operates and is managed as a single entity through a C9000 Series switch.

Provision individual C1048Ps by entering commands in PE Configuration mode from a C9010 console. The

PE configuration is applied to a C1048P following its discovery and successful authentication by the parent

If the master unit in a PE stack fails, stack ownership transfers to the standby unit. If a standby unit fails, the

stack master does not experience interrupted operation. A new standby unit is elected from the other

member units.

Stack Master Election

Important Points to Remember

PE Stack Configuration

Locating the Port Extender

Troubleshooting a PE Stack

Stack Management Roles

After you assemble and cable a stack of port extenders and power the stack units on, the units receive the

provisioned configuration from the parent C9010. A stack master unit is elected based on the highest MAC

The master may occupy any position in the stack. The Master LED on the front panel is illuminated on the

master unit.

The stack unit with the second highest MAC address is elected as the standby or backup management unit.

The standby assumes the master role if the master unit in the stack fails. The PE with the next highest priority

or MAC address becomes standby. All remaining stack units function as stack members.

Port Extender (PE) Stacking