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
15-3
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 15 Configuring Trunking
Trunking Protocol
Note
We recommend that both ends of a trunking ISL belong to the same port VSAN. On certain platforms or
fabric switches where the port VSANs are different, one end returns an error, and the other is not
connected.
Tip
To avoid inconsistent configurations, disable all E ports with a
shutdown
command before enabling or
disabling the trunking protocol.
This section explains how to configure trunking and contains the following topics:
•
Enabling or Disabling the Trunking Protocol, page 15-3
•
About Trunk Mode, page 15-3
•
Configuring Trunk Mode, page 15-4
•
About Trunk-Allowed VSAN Lists, page 15-4
•
Configuring an Allowed-Active List of VSANs, page 15-6
Enabling or Disabling the Trunking Protocol
To enable or disable the trunking protocol, follow these steps:
About Trunk Mode
By default, trunk mode is enabled in all Fibre Channel interfaces. However, trunk mode configuration
takes effect only in E-port mode. You can configure trunk mode as on (enabled), off (disabled), or auto
(automatic). The default trunk mode is on. 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 15-1
).
Command
Purpose
Step 1
switch#
config t
Enters configuration mode.
Step 2
switch(config)#
no trunk protocol enable
switch(config)#
Disables the trunking protocol.
switch(config)#
trunk protocol enable
switch(config)#
Enables trunking protocol (default).
Table 15-1
Trunk Mode Status Between Switches
Your Trunk Mode Configuration
Resulting State and Port Mode
Switch 1
Switch 2
Trunking State
Port Mode
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
Содержание 9124 - Cisco MDS Fabric Switch
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