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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
Chapter 3 Configuring Fibre Channel Interfaces
Guidelines and Limitations
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 3-10 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.
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 display the reason by using
the show module command.
switch# show module
Mod Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
5 32 1/2/4/8/10 Gbps Advanced FC Module DS-X9232-256K9 ok
7 0 Supervisor/Fabric-2 DS-X9530-SF2-K9 active *
13 48 1/2/4/8/10 Gbps Advanced FC Module DS-X9248-256K9 ok
Mod Sw Hw World-Wide-Name(s) (WWN)
--- -------------- ------ --------------------------------------------------
5 5.2(2) 0.207 21:01:00:0d:ec:b7:28:c0 to 21:20:00:0d:ec:b7:28:c0
7 5.2(2) 1.9 --
13 5.2(2) 0.212 23:01:00:0d:ec:b7:28:c0 to 23:30:00:0d:ec:b7:28:c0
Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
5 68-ef-bd-a8-45-cc to 68-ef-bd-a8-45-d0 JAF1450CHQT
7 00-24-c4-60-00-f8 to 00-24-c4-60-00-fc JAE141502L2
Ta b l e 3-10 Port Index Requirements for Generation 1 Modules
Generation 1 Module
Number of Port Indexes Required
Supervisor-1 Module Supervisor-2 Module
16-port 2-Gbps Fibre Channel module 16 16
32-port 2-Gbps Fibre Channel module 32 32
8-port Gigabit Ethernet IP Storage Services module 32 32
4-port Gigabit Ethernet IP Storage Services module 32 16
32-port 2-Gbps Fibre Channel Storage Services
Module (SSM).
32 32
14-port Fibre Channel/2-port Gigabit Ethernet
Multiprotocol Services (MPS-14/2) module
32 22
