Configuring Trunk Mode; About Trunk-Allowed Vsan Lists And Vf_Ids - Cisco MDS 9000 Series Configuration Manual

Chapter 5 Configuring Trunking
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Table 5-2
Your Trunk Mode Configuration
Port Type
E ports
Port Type
F and NP
ports
Tip The preferred configuration on the Cisco MDS 9000 Family switches is one side of the trunk set to auto
and the other side set to on.
When connected to a third-party switch, the trunk mode configuration on E ports has no effect. The ISL
Note
is always in a trunking disabled state. In the case of F ports, if the third-party core switch ACC's physical
FLOGI with the EVFP bit is configured, then EVFP protocol enables trunking on the link.

Configuring Trunk Mode

To configure trunk mode, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
switch(config-if)#
Step 3
switch(config-if)# switchport trunk mode on
switch(config-if)# switchport trunk mode off
switch(config-if)# switchport trunk mode auto

About Trunk-Allowed VSAN Lists and VF_IDs

Each Fibre Channel interface has an associated trunk-allowed VSAN list. In TE-port mode, frames are
transmitted and received in one or more VSANs specified in this list. By default, the VSAN range (1
through 4093) is included in the trunk-allowed list.
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
Trunk Mode Status Between Switches
Switch 1 Switch 2
On Auto or on
Off Auto, on, or off
Auto Auto
Core Switch NPV Switch
On Auto or on
Auto On
Off Auto, on, or off
Resulting State and Port Mode
Trunking State
Trunking (EISL)
No trunking (ISL)
No trunking (ISL)
Trunking State
Trunking
Trunking
No trunking
Purpose
Enters configuration mode.
Configures the specified interface.
Enables (default) the trunk mode for the
specified interface.
Disables the trunk mode for the specified
interface.
Configures the trunk mode to auto mode, which
provides automatic sensing for the interface.
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Configuring Trunk Mode and VSAN List
Port Mode
TE port
E port
E port
Link Mode
TF-TNP link
TF-TNP link
F-NP link
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