Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Release 2.1(2b) (OL-7411-04, September 2005)

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Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Release 2.1(2b)
OL-7411-04
New Features in Cisco MDS SAN-OS Release 2.1(2b)
At a minimum, you need to disable the default device alias distribution feature using the no device-alias
distribute command in global configuration mode. The show incompatibility system
bootflash:1.3(x)_filename command determines which additional features need to be disabled.
Note Refer to the “Determining Software Compatibility” section of the Cisco MDS 9000 Family
Configuration Guide for more details.
New Features in Cisco MDS SAN-OS Release 2.1(2b)
The new features for this release are the same as those listed in the Cisco MDS 9000 Family Release
Notes for Cisco MDS SAN-OS Release 2.1(2).
Limitations and Restrictions
For the latest VSFN compatibility information, refer to the Cisco MDS SAN-OS Release Compatibility
Matrix for VERITAS Storage Foundation for Networks Software.
IVR
All IVR enabled switches in a network must be either in NAT or non-NAT mode. Mixing the two modes
is not supported. Ensure that a switch with IVR-NAT mode enabled never coexists in the network with
another switch where IVR is enabled without NAT mode enabled.
While migrating from IVR non-NAT mode to NAT mode in Cisco MDS SAN-OS Release 2.1(1b),
deactivate the IVR zoneset, disable IVR on all of the IVR enabled switches, then reenable IVR. Finally,
enable NAT mode and then the IVR configurations. Note that migration between the non-NAT and NAT
modes is disruptive to IVR traffic and the FCIDs of the IVR devices change in the exported VSANs.
While upgrading the SAN-OS images on IVR enabled switches, upgrade all of the IVR enabled switches
to the new SAN-OS version before making any topology or configuration changes.
CFS distribution for IVR should be disabled on all IVR enabled switches before upgrading from Cisco
MDS SAN-OS Release 2.0(x) to Releases 2.1(1b) or 2.1(2b). After upgrading all of the IVR-enabled
switches to Cisco MDS SAN-OS Release 2.1(1b) or Release 2.1(2b), CFS distribution for IVR can be
reenabled.
14/2-Port Multiprotocol Services Module
The MPS-14/2 module does not support a MTU size greater than 8000 bytes. An attempt to set the MTU
size greater than 8000 bytes will result in an error. Reset the MTU size value between 576 to 8000 bytes
and issue the no shutdown command on the port for normal operation.