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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Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 13 Configuring N Port Virtualization
About NPV
Figure 13-3
Internal FLOGI Flows
Table 13-1
identifies the internal FLOGI parameters that appear in
Figure 13-3
.
Although fWWN-based zoning is supported for NPV devices, it is not recommended because:
•
Zoning is not enforced at the NPV device (rather, it is enforced on the NPV core switch).
•
Multiple devices behind an NPV device log in via the same F port on the core (hence, they use same
fWWN and cannot be separated into different zones).
•
The same device might log in using different fWWNs on the core switch (depending on the NPV
link it uses) and may need to be zoned using different fWWNs.
Default Port Numbers
Port numbers on NPV-enabled switches will vary depending on the switch model. For details about port
numbers for NPV-eligible switches, see
Chapter 4, “On-Demand Port Activation Licensing.”
NPV Traffic Management
Before Cisco MDS SAN-OS release 3.3(1a), NPV supported automatic selection of external links. When
a server interface is brought up, an external interface with the minimum load is selected from the
available links. There is no manual selection on the server interfaces using the external links. Also, when
NPV Core Switch
fc 5/10
fwwn
pwwn
nwwn
fc 1/5
NPV Device
184572
Table 13-1
Internal FLOGI parameters
Parameter
Derived From
pWWN
The fWWN of the NP port.
nWWN
The VSAN-based sWWN of the NPV device.
fWWN
The fWWN of the F port on the NPV core switch.
symbolic port name
The switch name and NP port interface string.
Note
If there is no switch name available, then the output will simply read
“switch.” For example,
switch: fc1/5
.
IP address
The IP address of the NPV device.
symbolic node name
The NPV switch name.
