HP Cisco MDS 9020 Cisco MDS 9000 Family Fabric Manager Configuration Guide - R - Page 499

Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules Combining Generation 1, Generation 2, and Generation 3 Modules Send documentation comments to [email protected] • Supervisor-2 modules support a maximum of 1020 port indexes when all switching modules in the chassis are Generation 2 or Generation 3. • Supervisor-2 modules only support a maximum of 252 port indexes when only Generation 1 switching modules, or a combination of Generation 1, Generation 2, or Generation 3 switching modules, are installed in the chassis. Note On a switch with the maximum limit of 252 port index maximum limit, any new module that exceeds the limit when installed does not power up. Generation 1 switching modules have specific numbering requirements. If these requirements are not met, the module does not power up. The port index numbering requirements include the following: • If port indexes in the range of 256 to 1020 are assigned to operational ports, Generation 1 switching modules do not power up. • A block of contiguous port indexes is available. If this block of port indexes is not available, Generation 1 modules do not power up. Table 22-19 shows the port index requirements for the Generation 1 modules. Note If the switch has Supervisor-1 modules, the block of 32 contiguous port indexes must begin on the slot boundary. The slot boundary for slot 1 is 0, for slot 2 is 32, and so on. For Supervisor-2 modules, the contiguous block can start anywhere. Table 22-19 Port Index Requirements for Generation 1 Modules Generation 1 Module 16-port 2-Gbps Fibre Channel module 32-port 2-Gbps Fibre Channel module 8-port Gigabit Ethernet IP Storage Services module 4-port Gigabit Ethernet IP Storage Services module 32-port 2-Gbps Fibre Channel Storage Services Module (SSM). 14-port Fibre Channel/2-port Gigabit Ethernet Multiprotocol Services (MPS-14/2) module Number of Port Indexes Required Supervisor-1 Module Supervisor-2 Module 16 16 32 32 32 32 32 16 32 32 32 22 The allowed mix of Generation 1 and Generation 2 switching modules in a chassis is determined at run-time, either when booting up the switch or when installing the modules. In some cases, the sequence in which switching modules are inserted into the chassis determines if one or more modules is powered up. When a module does not power up because of a resource limitation, you can see the reason by viewing the module information in the Information pane. For information on recovering a module powered-down because port indexes are not available, refer to the Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x. OL-17256-03, Cisco MDS NX-OS Release 4.x Cisco MDS 9000 Family Fabric Manager Configuration Guide 22-25