Huijue Optical Port Stacking Switch

Huawei S-Series switches support optical port stacking using dedicated 10GE/40GE ports, with logical stack ports configured for chain or ring topologies, supporting up to 9 switches per stack.Supported Switch Models and PortsAll S5731-S and S5731S-S series switches can form stacks using service ports with dedicated stack cables or optical ports .10GE SFP+ and 40GE QSFP+ optical ports can be used as stack ports. Each switch supports up to two logical stack ports, and each logical stack port can connect up to four stack member ports .Combo ports cannot be used as stack member ports .Stacking TopologyTwo switches: Use chain (back-to-back) topology. Connect the first logical stack port of the local switch to the first logical stack port of the remote switch .Three or more switches: Use ring topology to improve redundancy and reliability .Logical stack ports must be paired correctly: for example, stack-port n/1 of the local device connects to stack-port n/2 of the remote device .Configuration StepsPre-Stacking Preparation: Ensure switches support stacking and check the stacking capability of the optical ports .Physical Connection: Insert optical modules into the designated 10GE/40GE ports and connect using compatible fiber cables. Avoid mixing single-mode and multimode fibers .Logical Port Configuration:Enter system view on each switch.Define logical stack ports and add physical optical ports as stack members. For example, ports 1–2 can be configured as logical port 1, and ports 3–4 as logical port 2 .Once ports are assigned to a logical stack port, they cannot be used as ordinary service ports .Stack ID and Priority: Assign a unique stack ID and configure stack priority to determine the master switch in the stack .Verification: Use commands like display stack to confirm stack member status and ensure all optical ports are active and transmitting correctly .Best PracticesUse dedicated stack cables or compatible optical modules to avoid frequent error-down events .Limit the stack to 2–9 switches; if managed via iMaster NCE-Campus, limit to 4 switches for optimal management .Ensure all stack members run compatible software versions to maintain stability .For uplinks to access devices, configure ports as STP edge ports to prevent recalculation when ports flap .Wear an anti-static wrist strap when handling optical modules to prevent ESD damage . By following these steps and best practices, Huawei S-Series switches can be stacked using optical ports to form a single logical device, improving port density, bandwidth, and network reliability.