Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual page 139

Chapter 5 Troubleshooting Mixed Generation Hardware
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Table 5-6
Module
12-port 4-Gbps Fibre Channel switching module
4-port 10-Gbps Fibre Channel switching 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
1. All Generation 1 modules reserve port indexes on fixed boundaries with Supervisor-1. See
2. Fourteen Fibre Channel ports and two Gigabit Ethernet ports.
Using any combination of modules that include a Generation 1 module or a Supervisor-1 module limits
the port index availability to 252 on all Cisco MDS 9500 Series directors. Generation 1 modules also
require contiguous port indexes where the system assigns a block of port index numbers contiguously
starting from the first port index reserved for the slot that the module is inserted in (See
means that while there may be enough port indexes available for a Generation 1 module, the module may
not boot up because the available port indexes are not in a contiguous range or the contiguous block does
not start at the first port index for a given slot.
Example 5-1
port indexes from the first slot. Slot 1 still has 16 port indexes available, but the full 32 indexes are no
longer available (28-31 are used by the module in slot 4). This means that no Generation 1 module except
a 16-port Fibre Channel switching module can be inserted into slot 1 because some of the port indexes
for the slot are already in use.
Example 5-1
switch#show port index-allocation
Module index distribution:
---------------------------------------------------+
Slot
-------|---------|-------|-------------------------|
1
2
3
4
7
8
9
SU
*Allowed range applicable only for Generation-1 modules
OL-9285-05
Port Index Allocation (continued)
shows a case with a Supervisor-1 module, where a 48-port Generation 2 module borrowed
Borrowing Port Indexes from Another Slot
| Allowed | Alloted indices info
| range* | Total |
| 0- 31| - | -
| 32- 63| 32 | 32-63
| 64- 95| 48 | 64-95,224-239
| 96- 127| 48 | 96-127, 240-252, 28-31 |
| 128- 159| 32 | 128-159
| 160- 191| 32 | 160-191
| 192- 223| 32 | 192-223
| 253-255 | 3 | 253-255
Physical Ports
12
4
16
32
8
4
32
2
16
|
Index values |
|
|
|
|
|
|
|
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
Overview
Port Indexes Allocated
12
4
1
16
1
32
1
32
32 (with Supervisor-1)
16 (with Supervisor-2)
1
32
32 (with Supervisor-1)
22 (with Supervisor-2)
Table 5-7.
Table 5-7). This
5-5