Slot problem of LPUs on S series switches

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LPUs of S series switches can be installed in any LPU slots.
You can use Hardware Query Tool to query specified slots of modular switches.

Other related questions:
LPU of S series switches
The LPUs are classified into E series Ethernet cards, F series Ethernet cards, S series Ethernet cards, B series Ethernet cards, and X series Ethernet cards. - The E series is the enhanced series that supports MPLS and extension of routing, ACL, and MAC address entries. The E series consists of EA, EC, ED, and EE LPUs. - The F series is the ordinary series that supports MPLS but not extension of MAC address entries. The F series consists of FA and FC LPUs. - The S series is the standard series that does not support extension of MAC address entries. The S series consists of SA and SC LPUs. MPLS is supported by the SC card, but not the SA card. - The B series is the large buffer series. - The X series is the agile series. The X series consists of X1E, X2E, X2S and X2H LPUs.

S series switches problem with VLSM
S series switches (except S1700) support VLSM to divide subnet, support 31-bit mask

Is there any limitation on the slots of the main control boards and LPUs
A main control board can be installed in either of the two slots reserved for the main control board. An LPU can be installed in any slot reserved for LPUs. However, the main control board cannot be installed in the slot reserved for LPU, and the LPU cannot be installed in the slot reserved for the main control board. For details about slot distribution of LPUs and MPUs, see How Are Slots of an S7703 Chassis Distributed?, How Are Slots of an S7706 Chassis Distributed?, How Are Slots of an S7712 Chassis Distributed?, How Are Slots of an S9703 Chassis Distributed?, How Are Slots of an S9706 Chassis Distributed?, and How Are Slots of an S9712 Chassis Distributed?.

Adaptation problem of cards on S series switches
Most of the cards of different switch models are not interchangeable. You can use Hardware Query Tool to query card models supported by specified switches.

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