About Interface Modes - Cisco AP775A - Nexus Converged Network Switch 5010 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
When configuring these host-optimized ports, the following port mode guidelines apply:
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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 groups of ports that are located on the left and outlined in white are
Note
full line rate. The other ports are host-optimized. Each group of 4 host-optimized ports have the same
features 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-17256-03, Cisco MDS NX-OS Release 4.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.
The 32-port switching module does not support FICON.
Figure
Cisco MDS 9000 Family Fabric Manager Configuration Guide
Fibre Channel Interfaces
20-2). Besides these modes, each
20-3