HP Cisco Nexus 5000 Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Re - Page 39

Limitations and Restrictions Send documentation comments to [email protected] 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: • 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 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: • IVR flows • Devices with NPV and NPIV enabled • F port trunking • F port channeling 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: • Port Mode: auto or E for all of the ports • Rate Mode: dedicated • Buffer Credits: default value 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 Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.2(1a) 39