Cisco AP776A - Nexus Converged Network Switch 5020 Примітка до випуску - Сторінка 39

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RSPAN Traffic Not Supported on CTS Ports on 8-Gbps Switching Modules

An inter-switch link (ISL) that is enabled for Cisco TrustSec (CTS) encryption must be brought up in
non-CTS mode to support remote SPAN (RSPAN) traffic on the following modules:
•
•
•
If the ISL link is brought up with CTS enabled, random packets drops of both RSPAN traffic and normal
traffic will occur on the receiver port switch.

I/O Accelerator Feature Limitations

In NX-OS Release 4.2(1a), IOA does not support the following NX-OS features:
•
•
•
•

Support for FCIP Compression Modes

In Cisco NX-OS Release 4.2(1a), FCIP compression mode 1 and compression mode 3 are not supported
on the Cisco MSM-18/4 module and on the SSN-16 module.

Saving Copies of the Running Kickstart and System Images

After you upgrade to MDS NX-OS Release 4.2(1a), you are not allowed to delete, rename, move, or
overwrite the kickstart and system images that are in the current system bootvar settings on an active or
standby MDS Supervisor-2 module on any Cisco MDS 9500 Series switch. This restriction does not
apply to the integrated supervisor module on the MDS 9200 and MDS 9100 series switches.

Configuring Buffer Credits on a Generation 2 or Generation 3 Module

When you configure port mode to auto or E on a Generation 2 module, one of the ports will not come
up for the following configuration:
•
•
•
When you configure port mode to auto or E on a Generation 3 module, one or two of the ports will not
come up for the following configuration:
OL-19964-02
DS-X9248-96K9: Cisco MDS 9000 48-Port 8-Gbps Fibre Channel Switching Module
DS-X9224-96K9: Cisco MDS 9000 24-Port 8-Gbps Fibre Channel Switching Module
DS-X9248-48K9: Cisco MDS 9000 4/44-Port Host-Optimized 8-Gbps Fibre Channel Switching
Module
IVR flows
Devices with NPV and NPIV enabled
F port trunking
F port channeling
Port Mode: auto or E for all of the ports
Rate Mode: dedicated
Buffer Credits: default value
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.2(1a)
Limitations and Restrictions
39