About Interface Modes - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

Chapter 20 Configuring Interfaces
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
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Note We recommend that you configure your E ports on a 16-port switching module. If you must configure
an E port on a 32-port host optimized switching module, the other three ports in that 4-port group cannot
be used.
In the Cisco MDS 9100 Series, the left most groups of ports outlined in white (4 ports in the 9120 switch
Note
and 8 ports in the 9140 switch) are full line rate like the 16-port switching module. The other ports (16
ports in the 9120 switch and 32 ports in the 9140 switch) are host-optimized like the 32-port switching
module. Each group of 4 host-optimized ports have the same rules as for the 32-port switching module.

About Interface Modes

Each physical Fibre Channel interface in a switch may operate in one of several port modes: E port, F
port, FL port, TL port, TE port, SD port, ST port, and B port (see
interface may be configured in auto or Fx port modes. These two modes determine the port type during
interface initialization.
OL-16184-01, Cisco MDS SAN-OS Release 3.x
You can configure only the first port in each 4-port group (for example, the first port in ports 1-4,
the fifth port in ports 5-8 and so on) as an E port. If the first port in the group is configured as an E
port, the other three ports in each group (ports 2-4, 6-8 and so on) are not usable and remain
shutdown.
If you execute the write erase command on a 32-port switching module, and then copy a saved
configuration to the switch from a text file that contains the no system default switchport
shutdown command, you need to copy the text file to the switch again for the E ports to come up
without manual configuration.
If any of the other three ports are enabled, you cannot configure the first port as an E port. The other
three ports continue to remain enabled.
The auto mode is not allowed in a 32-port switching module or the host-optimized ports in the Cisco
9100 Series (16 host-optimized ports in the Cisco MDS 9120 switch and 32 host-optimized ports in
the Cisco MDS 9140 switch).
The default port mode is Fx (Fx negotiates to F or FL) for 32-port switching modules and the
host-optimized ports in the Cisco 9100 Series (16 host-optimized ports in the Cisco MDS 9120
switch and 32 host-optimized ports in the Cisco MDS 9140 switch).
The 32-port switching module does not support FICON.
Figure 20-2). Besides these modes, each
Cisco MDS 9000 Family CLI Configuration Guide
Fibre Channel Interfaces
20-3