Port Prohibiting; Configuring The Default State For Port Prohibiting - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 29 Configuring FICON
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
You cannot block or prohibit the CUP port (0XFE).
Caution
If a port is shut down, unblocking that port does not initialize the port.
The shutdown/no shutdown port state is independent of the block/no block port state.
Note
To block or unblock port addresses in a VSAN, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# ficon vsan 2
switch(config-ficon)#
Step 3
switch(config-ficon)# portaddress 1 - 5
switch(config-ficon-portaddr)#
Step 4
switch(config-ficon-portaddr)# block
switch(config-ficon-portaddr)# no block

Port Prohibiting

To prevent implemented ports from talking to each other, configure prohibits between two or more ports.
If you prohibit ports, the specified ports are prevented from communicating with each other.
You cannot prohibit a PortChannel or FCIP interface.
Tip
Unimplemented ports are always prohibited. In addition, prohibit configurations are always
symmetrically applied—if you prohibit port 0 from talking to port 15, port 15 is automatically prohibited
from talking to port 0.
If an interface is already configured in E or TE mode and you try to prohibit that port, your prohibit
Note
configuration is rejected. Similarly, if a port is not up and you prohibit that port, the port is not allowed
to come up in E mode or in TE mode.

Configuring the Default State for Port Prohibiting

By default, port prohibiting is disabled on the implemented interfaces on the switch. As of Cisco MDS
SAN-OS Release 3.0(2), you can change the default port prohibiting state to enabled in VSANs that you
create and then selectively disable port prohibiting on implemented ports, if desired. Also, only the
FICON configuration files created after you change the default have the new default setting (see the
"FICON Configuration Files" section on page
OL-18084-01, Cisco MDS NX-OS Release 4.x
Purpose
Enters configuration mode.
Enables FICON on VSAN 2.
Selects port address 1 to 5 for further configuration.
Disables a range of port addresses and retains it in the
operationally down state.
Enables the selected port address and reverts to the
factory default of the port address not being blocked.
29-32).
Cisco MDS 9000 Family CLI Configuration Guide
Configuring FICON Ports
29-25