Debugging Flexattach Virtual Pwwn; Security Settings For Flexattach Virtual Pwwn - Cisco MDS 9000 Series Configuration Manual

Chapter 8 Configuring FlexAttach Virtual pWWN
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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0x010000 N 20:01:00:0d:ec:2f:c1:40 (Cisco) npv
0x010001 N 20:02:00:0d:ec:2f:c1:40 (Cisco) npv
0x010200 N 21:00:00:e0:8b:83:01:a1 (Qlogic) scsi-fcp:init
0x010300 N 21:01:00:e0:8b:32:1a:8b (Qlogic) scsi-fcp:init
Total number of entries = 4

Debugging FlexAttach Virtual pWWN

Table 8-1
Table 8-1 FlexAttach Errors and Workarounds
Error
fc1/1 : interface is not
down
FlexAttach
configuration is not
distributed to the peers
Even with CFS
distribution enabled
Inagua does not
become a peer with
other NPVs
NP port uses physical
pWWN instead of
virtual pWWN
confgured through
FlexAttach
real port WWN and
virtual WWN cannot
be same
Virtual port WWN
already exists

Security Settings for FlexAttach Virtual pWWN

Security settings for the FlexAttach virtual pWWN feature are done by port security at the NPV core.
Node WWN of the end device is used to provide physical security.
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
lists the errors that might be displayed and provides the workarounds.
Description
FlexAttach configuration
fails because the
configuration is enabled
for an active interface with
the operation state as up.
The FlexAttach
configuration on one peer
NPV is not available to any
other peer NPV.
CFS over IP is enabled,
and the Inagua in one
blade center is not the peer
NPV for other NPVs.
This occurs when NP port
uses physical pWWN
instead of virtual pWWN,
that is configured through
FlexAttach.
This occurs when you try
to configure FlexAttach
with a similar value for
pWWN and virtual
pWWN.
This occurs when you try
to configure an already
defined pWWN to a
different interface.
Workaround
To move the port to the shut state, enable the
FlexAttach configuration, and then move the port
to no shut state.
FlexAttach configuration will not be distributed
if cfs ipv4 distribute, or cfs ipv6 distribute is
disabled. Enable cfs ipv4 distribute, or cfs ipv6
distribute.
CFS over IP uses IP multicast to discover the
NPV peers in the network. IBM MM does not
support multicast and cannot act as a peer with
NPV. This prevents the FlexAttach configuration
from getting disrtibuted to other peer NPVs in the
network.
FlexAttach is supported on server interfaces like
F ports, and not on external interfaces such as NP
ports.
Use different values for pWWN and virtual
pWWN, as similar values for pWWN and virtual
pWWn are not allowed.
Use an undefined virtual pWWN for a new
interface.
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Configuring FlexAttach Virtual pWWN
8-5