Guidelines And Limitations; General Guidelines And Limitations; Upgrade And Downgrade Limitations - Cisco MDS 9000 Series Configuration Manual

Configuring Trunking

Guidelines and Limitations

General Guidelines and Limitations

The trunking feature has the following general configuration guidelines and limitations:
• You will see the switchport trunk mode off command added to F ports after upgrading from Cisco
• F ports support trunking in Fx mode.
• The trunk-allowed VSANs configured for TE, TF, and TNP links are used by the trunking protocol to
• If a trunking enabled E port is connected to a third-party switch, the trunking protocol ensures seamless
• Trunking F ports and trunking F PortChannels are not supported on the following hardware:
• On core switches, the FC-SP authentication will be supported only for the physical FLOGI from the
• No FC-SP authentication is supported by the NPV switch on the server F ports.
• MDS does not enforce the uniqueness of logical pWWNs across VSANs.
• DPVM is not supported on trunked F port logins.
• The DPVM feature is limited to the control of the port VSAN, since the EVFP protocol does not allow
• The port security configuration will be applied to both the first physical FLOGI and the per VSAN
• Trunking is not supported on F ports that have FlexAttach enabled.
• On MDS 91x4 core switches, hard zoning can be done only on F ports that are doing either NPIV or
Note Fibre Channel Security Protocol (FC-SP) is not supported for 6.2(1) release on MDS 9710, but targeted for
a future release.

Upgrade and Downgrade Limitations

The trunking and channeling feature includes the following upgrade and downgrade limitations:
MDS NX-OS Release 8.1(1) to Cisco MDS NX-OS Release 8.2(1).
determine the allowed active VSANs in which frames can be received or transmitted.
operation as an E port.
• 91x4 switches, if NPIV is enabled and used as the NPIV core switch.
• Generation 1 2-Gbps Fibre Channel switching modules.
physical pWWN.
changing the VSAN on which a logical pWWN has done FLOGI.
FLOGIs.
trunking. However, in NPV mode, this restriction does not apply since zoning is enforced on the core F
port.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x

Guidelines and Limitations

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