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24-7
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 24 Configuring Trunking
Configuring Trunk Mode and VSAN List
Enabling the F Port Trunking and Channeling Protocol
Note The trunking protocols must be enabled to support trunking, and NPIV must be enabled on the core
switch to activate a TF-TNP link.
To enable or disable the F port trunking and channeling protocols using the Fabric Manager, follow these
steps:
Step 1 From the Physical Interfaces panel, expand Switches and then select F_Port_Channel/Trunk.
You see the list of switches in the Fabric with F port trunking and channeling enabled.
Step 2 From the Status column, select enable or disable.
Configuring Trunk Mode and VSAN List
This section includes the following topics:
• About Trunk Modes, page 24-7
• Configuring Trunk Mode, page 24-8
• About Trunk-Allowed VSAN Lists and VF_IDs, page 24-9
• Configuring an Allowed-Active List of VSANs, page 24-11
About Trunk Modes
By default, trunk mode is enabled in all Fibre Channel and Ethernet interfaces. You can configure trunk
mode as on (enabled), off (disabled), or auto (automatic). The default trunk mode is auto. The trunk
mode configuration at the two ends of an ISL, between two switches, determine the trunking state of the
link and the port modes at both ends (see Table 24-2).
Table 24-2 Trunk Mode Status Between Switches
Your Trunk Mode Configuration Resulting State and Port Mode
Port Type Switch 1 Switch 2 Trunking State Port Mode
E ports On Auto or on Trunking (EISL) TE port
Off Auto, on, or off No trunking (ISL) E port
Auto Auto No trunking (ISL) E port
Port Type Core Switch NPV Switch Trunking State Link Mode
F and NP
ports
On Auto or on Trunking TF-TNP link
Auto On Trunking TF-TNP link
Off Auto, on, or off No trunking F-NP link
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