Limitations and Restrictions
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
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Support for Generation One Modules
As of Cisco MDS NX-OS Release 5.0(1a), support for Generation One modules has been discontinued.
See the
IPv6
The management port on Cisco MDS switches supports one user-configured IPv6 address, but does not
support auto-configuration of an IPv6 address.
User Roles
In SAN-OS Release 3.3(x) and earlier, when a user belongs to a role which has a VSAN policy set to
Deny and the role allows access to a specific set of VSANs (for example, 1 through 10), the user is
restricted from performing the configuration, clear, execute, and debug commands which had a VSAN
parameter outside this specified set. Beginning with NX-OS Release 4.1(1b), these users are still
prevented from performing configuration, clear, execute, and debug commands as before, however,
they are allowed to perform show commands for all VSANs. The ability to execute the show command
addresses the following:
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Red Hat Enterprise Linux
The Linux kernel core dump is not supported in NX-OS Release 4.1(1b) and later versions and therefore
the CLI command has been removed. A syntax error message will be displayed if you import
configurations from SAN-OS Release 3.3(x) and earlier to NX-OS Release 4.1(1b) and later. These
syntax errors do not affect the application of other commands in the configuration and can be safely
ignored. To address this, remove the kernel core configuration from the ASCII configuration file before
importing the configuration.
Generation 1 Module Limitation
When a Cisco or other vendor switch port is connected to a Generation 1 module port (ISL connection),
the receive buffer-to-buffer credit of the port connected to a Generation 1 module port should not exceed
255.
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(4b)
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Saving Copies of the Running Kickstart and System Images, page 33
Configuring Buffer Credits on a Generation 2 or Generation 3 Module, page 33
Features Not Supported on the Cisco MDS 9148 Switch, page 33
PPRC Not Supported with FCIP Write Acceleration, page 33
"Support for Generation One Modules"
In a network environment, users often need to view information in other VSANs even though they
do not have permission to modify configurations in those VSANs.
This behavior makes Cisco MDS 9000 Series switches consistent with other Cisco products, such
as Cisco Nexus 7000 Series switches, that exhibit the same behavior for those roles (when they apply
to the VLAN policy).
section for more information.
OL-21012-04
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