Send documentation comments to mdsfeedback-doc@cisco.com
20-4
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 20 Configuring Interfaces
Fibre Channel Interfaces
Figure 20-2 Cisco MDS 9000 Family Switch Port Modes
Note Interfaces are created in VSAN 1 by default. See Chapter 26, “Configuring and Managing VSANs.”
Each interface has an associated administrative configuration and an operational status:
• The administrative configuration does not change unless you modify it. This configuration has
various attributes that you can configure in administrative mode.
• The operational status represents the current status of a specified attribute like the interface speed.
This status cannot be changed and is read-only. Some values may not be valid when the interface is
down (for example, the operational speed).
Note When a module is removed and replaced with the same type of module, the configuration is retained. If
a different type of module is inserted, then the original configuration is no longer retained.
Each interface is briefly described in the sections that follow.
E Port
In expansion port (E port) mode, an interface functions as a fabric expansion port. This port may be
connected to another E port to create an Inter-Switch Link (ISL) between two switches. E ports carry
frames between switches for configuration and fabric management. They serve as a conduit between
switches for frames destined to remote N ports and NL ports. E ports support class 2, class 3, and class
F service.
An E port connected to another switch may also be configured to form a PortChannel (see Chapter 23,
“Configuring PortChannels”).
Note We recommend that you configure E ports on 16-port modules. If you must configure an E port on a
32-port oversubscribed module, then you can only use the first port in a group of four ports (for example,
ports 1 through 4, 5 through 8, and so forth). The other three ports cannot be used.
To Next Page
Loading...
Need help?
General
