8-6
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
Chapter 8 Configuring FlexAttach Virtual pWWN
Monitoring FlexAttach Virtual pWWN
Verifying the End Device
To verify that the end device is logged with the correct virtual WWNs, use the show fcns database
command on the NPV core. (See
Example 8-2.)
Example 8-2 Verifying the End Device
switch# show fcns database
VSAN 1:
--------------------------------------------------------------------------
FCID TYPE PWWN (VENDOR) FC4-TYPE:FEATURE
--------------------------------------------------------------------------
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
Monitoring FlexAttach Virtual pWWN
Table 8-2 lists the errors that might be displayed and provides the workarounds.
Ta b l e 8-2 FlexAttach Errors and Workarounds
Error Description Workaround
fc1/1 : interface is not
down
FlexAttach configuration
fails because the
configuration is enabled
for an active interface with
the operation state as up.
To move the port to the shut state, enable the
FlexAttach configuration, and then move the port
to no shut state.
FlexAttach
configuration is not
distributed to the peers
The FlexAttach
configuration on one peer
NPV is not available to any
other peer NPV.
FlexAttach configuration will not be distributed
if cfs ipv4 distribute, or cfs ipv6 distribute is
disabled. Enable cfs ipv4 distribute, or cfs ipv6
distribute.
Even with CFS
distribution enabled
Inagua does not
become a peer with
other NPVs
CFS over IP is enabled,
and the Inagua in one
blade center is not the peer
NPV for other NPVs.
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 distributed to other peer NPVs in the
network.
NP port uses physical
pWWN instead of
virtual pWWN
configured through
FlexAttach
This occurs when NP port
uses physical pWWN
instead of virtual pWWN,
that is configured through
FlexAttach.
FlexAttach is supported on server interfaces such
as F ports, and not on external interfaces such as
NP ports.
