Considerations for Converting ICX 7550 Module 2 from Stacking to Data Uplink

Module 2 of an ICX 7550 device has two modes:

• Default stacking mode, which allows the device to enable stacking features and form a stacking system
• Data uplink mode, which uses Module 2 ports as data ports and does not allow a stack to form

Module 2 can be configured for data uplink mode with the slot 2 uplink-100g command. The new configuration must be saved and reloaded, as shown in Converting from Stacking to Data Uplink on ICX 7550 Module 2, before data uplink mode becomes operational. Once Module 2 is operating in data uplink mode, the ICX 7550 device cannot form a stacking system, and ports x/2/1 and x/2/2 can be configured just like other data ports.

Keep the following items in mind before converting Module 2 on an ICX 7550 device from stacking to data uplink.

• Module 2 can be converted from stacking to data uplink mode only on ICX 7550-24F, ICX 7550-48F, ICX 7550-24ZP, and ICX 7550-48ZP devices.
• ICX 7550-24F and ICX 7550-24ZP devices have only one port, 1/2/2, that can support "slot 2 uplink-100g" configuration. (There is no port 1/2/1 in 100-Gbps data uplink mode on these devices.)
• Stacking-to-data conversion can be performed only on a standalone unit. A stack system containing more than one unit cannot use the slot 2 uplink-100g command to configure data uplink.
• If Module 2 has "slot 2 uplink-100g" configuration, it may operate at 40-Gbps speed if the connector supports 40 Gbps.
• An ICX 7550 device operating in data uplink mode allows configuration of stacking features. However, the configuration is retained offline. RUCKUS recommends configuring stacking features when a unit is operating in default stacking mode, not in data uplink mode.
• ICX 7550 Module 2 ports in data uplink mode can still be used as data ports even if "stack enable" or "stack-port" is configured.