Control Bridge
The control bridge (CB) manages port extender (PE) units. It performs switching, routing, and forwarding for PE ports and provides centralized policy management. The CB uses the Link Layer Discovery Protocol (LLDP) to discover PE units. When the CB discovers a PE unit, it connects to the PE unit and creates a control plane using Control and Status Protocol (CSP) over the uplink/cascade port. Each PE port is managed as a virtual port from the CB perspective. The CB sets up each PE unit for traffic forwarding and creates multicast and unicast forwarding tables through CSP.
The Ruckus ICX 7750 acts as control bridge. The control bridge can be a standalone device or a stack. The control bridge stack can have a maximum of four units with a ring or linear topology. The ICX 7750 supports long-distance stacking spanning up to 10 kilometers between stack units.
Refer to Bill of Materials for qualified optics and port combinations supported for long-distance stacking on the ICX 7750.
The models of the ICX 7750 have a similar hardware design. The differences lie mostly in the external interfaces. All models support the 802.1BR standard. The ICX 7750 has the following models: