Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual page 140

Overview
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
Using any combination of modules that include a Generation 1 module and a Supervisor-2 module limits
the port index availability to 252 on all Cisco MDS 9500 Series directors. The Generation 1 modules can
use any contiguous block of port indexes that start on the first port index reserved for any slot in the range
0-252. (See
Using any combination of only Generation 2 with a Supervisor-2 module allows a maximum of 528
(with an architectural limit of 1020) port indexes on all Cisco MDS 9500 Series directors. Generation 2
modules do not need contiguous port indexes. Generation 2 modules use the available indexes in the slot
that it is installed and then borrow available indexes from the supervisors. If the module requires more
indexes, it starts borrowing available indexes from slot 1 of the chassis until it has the number of port
indexes necessary.
Note Use the purge module CLI command to free up reserved port indexes after you remove a module.
Table 5-7
Supervisor
Supervisor-1
Supervisor-2
1. See the Allowed Ranges column in
2. 16-port Fibre Channel switching modules can use the upper 16 indexes within a slot (for example, 16-31).
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
5-6
Table 5-7).
Port Index Requirements
Example 5-1
Chapter 5
Module Port Index Requirements
Generation 1 Indexes must:
Be contiguous.
•
In the range assigned to the given slot.
•
• Start with the lowest value assigned to
that slot.
Have no port indexes above 256
•
allocated to any other operational
modules.
Maximum 252 assignable port indexes
available.
Generation 2 Indexes can be any available number in the
range 0-252.
Generation 1 Indexes must:
Be contiguous.
•
Start with the lowest value assigned to
•
any slot.
Have no port indexes above 256
•
allocated to any other operational
modules.
Maximum 252 assignable port indexes
available.
Generation 2 Indexes can be any available number in the
range 0-1020 if all modules are Generation
2 modules. Otherwise, indexes can be any
available number in the range 0-252.
for the port indexes assigned to each slot for Generation 1 modules.
Troubleshooting Mixed Generation Hardware
12
2.
OL-9285-05