OSM Ratio's on MDS blades

Generation 2 Switches and Modules 9216 does not support Gen-2 modules If dedicated ports are not using all of their allocated bandwidth, the unused bandwidth is made available for use by all ports configured for shared bandwidth mode. Performance Buffers are used on 12-port 4GB, 4-port 10GB modules only. Port GroupsModulePorts Per GroupBandwidth Per GroupMax BW Per PortDedicated Shared DS-X91481212.84GBYesYesDS-X9124612.84GBYesYesDS-X9304-18K9612.84GBYesYesDS-X9112312.84GBYesNoDS-X970411010GBYesNoDS-C9134-K94164GBYesYes11010GBYesNoDS-C9124-K94164GBYesNoDS-C9222i-K9612.84GBYesYes 48-port Module 4:1 – 5:1BB Credit Allocation TypeBB Credit Per ModuleDedicated (2-250)Shared (2-16)ISLFxISLFxUser Defined BB6000125161616 24-port Module 2:1 – 4:1BB Credit Allocation TypeBB Credit Per ModuleDedicated (2-250)Shared (2-16)ISLFxISLFxUser Defined BB6000250161616 18-port Module 2:1 – 4:1BB Credit Allocation TypeBB Credit Per ModuleDedicated (2-250)Shared (2-16)ISLFxISLFxUser Defined BB4509250161616 12-port Module 1:1BB Credit Allocation TypeBB Credit Per ModuleDedicated (2-250)ISLFxUser Defined BB548825016Performance512 (shared)14512 With regards to the 12-port module: There are 2488 extra buffers available as extended BB_credit buffers after allocating all the default BB_credit buffers for all the ports in ISL mode (5488 - (250 * 12)). Extended BB_credits are allocated across all ports on the switch. That is, they are not allocated by port group. 4-port Module 1:1BB Credit Allocation TypeBB Credit Per ModuleDedicated (2-250)ISLFxUser Defined BB548825016Performance512 (shared)14512 With regards to the 4-port module: The ports in the 4-port 10-Gbps switching module only support 10-Gbps dedicated rate mode. FL port mode and shared rate mode are not supported. There are 4488 extra buffers available as extended BB_credits after allocating all the default BB_credit buffers for all the ports in ISL mode (5488 - (250 * 4)). 9134 SwitchBB Credit Allocation TypeBB Credit Per Port GroupBB Credit Per Port Defaults (2-250)ISLFxUser Defined BB641616 9124 SwitchBB Credit Allocation TypeBB Credit Per Port GroupBB Credit Per Port Defaults (2-250)ISLFxUser Defined BB641616 9222i SwitchBB Credit Allocation TypeBB Credit Per Port GroupBB Credit Per Port Defaults (2-250)ISLFxUser Defined BB450925016