Cisco Systems DSC9148D8G48PK9 manual Guidelines and Limitations

Chapter 3 Configuring Fibre Channel Interfaces

Guidelines and Limitations

When you are downgrading to a release earlier than Cisco SAN-OS Release 3.1(2), all modules keep operating in the same bandwidth fairness configuration prior to the downgrade. After the downgrade, any new module that is inserted has bandwidth fairness disabled.

Note After the downgrade, any insertion of a module or module reload will have bandwidth fairness disabled.

Guidelines and Limitations

This section includes the following topics:

•Combining Generation 1, Generation 2, Generation 3, and Generation 4 Modules, page 3-18

•Local Switching Limitations, page 3-19

•Port Index Limitations, page 3-19

•PortChannel Limitations, page 3-21

Combining Generation 1, Generation 2, Generation 3, and Generation 4 Modules

Cisco MDS NX-OS Release 5.2(x) and later supports combining Generation 1, Generation 2, Generation 3, and Generation 4 modules and switches with the following considerations:

•MDS NX-OS Release 4.1(1) and later features are not supported on the following Generation 1 switches and modules:

–Supervisor 1 module

–4-Port IP Storage Services module

–8-Port IP Storage Services module

–MDS 9216 switch

–MDS 9216A switch

–MDS 9020 switch

–MDS 9120 switch

–MDS 9140 switch

•Supervisor-1 modules must be upgraded to Supervisor-2 modules on the MDS 9506 and MDS 9509 Directors.

•IPS-4 and IPS-8 modules must be upgraded to the MSM-18/4 Multiservice modules.

•Fabric 1 modules must be upgraded to Fabric 2 modules on the MDS 9513 Director to use the 48-port or the 24-port 8-Gbps module.

•Fabric 2 modules must be upgraded to Fabric 3 modules on the MDS 9513 Director to get the maximum backplane bandwidth of 256 Gbps.

•Cisco Fabric Manager Release 4.x supports MDS SAN-OS Release 3.x and NX-OS 4.x in mixed mode through Interswitch Link (ISL) connectivity.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
3-18	OL-29284-01, Release 6.x