Cisco Nexus 5000 Series - Configuring Trunk Mode

The default trunk mode is on. The trunk mode configurations at the two ends of the link determine the trunking
state of the link and the port modes at both ends (see the following table).
Table 11: Trunk Mode Status Between Switches
Resulting State and Port ModeYour Trunk
Mode
Configuration
Port ModeTrunking StateSwitch 2Switch 1
TE portTrunking (EISL)Auto or onOn
E portNo trunking (ISL)Auto, on, or offOff
E portNo trunking (ISL)AutoAuto
The preferred configuration on the Cisco SAN switches is that one side of the trunk is set to auto and the other
is set to on.
When connected to a third-party switch, the trunk mode configuration has no effect. The Inter-Switch
Link (ISL) is always in a trunking disabled state.
Note
Configuring Trunk Mode
You can configure trunk mode.
SUMMARY STEPS
1.
configure terminal
2.
switch(config)# interface fc slot/port
3.
interface vfc vfc-id
4.
switchport trunk mode on
5.
switchport trunk mode off
6.
switchport trunk mode auto
DETAILED STEPS
PurposeCommand or Action
Enters global configuration mode.configure terminal
Example:
switch# configure terminal
switch(config)#
Step 1
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide, Release 5.2(1)N1(1)
88 OL-27583-01
Configuring VSAN Trunking
Configuring VSAN Trunking