Flexattach Virtual Pwwn Cfs Distribution; Difference Between San Device Virtualization And Flexattach Port Virtualization - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

Chapter 14 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

FlexAttach Virtual pWWN CFS Distribution

FlexAttach virtual pWWN configuration is distributed for CFS through IPv4, and is enabled by default.
The FlexAttach virtual pWWN distribution, by default, is on CFS region 201. The CFS region 201 links
only to the NPV enabled switches. Other CFS feature like syslog is on region 0. Region 0 will be linked
through IPv4 for all NPV switches on the same physical fabric. If CFS has an option to link through IPv4
or ISL, then CFS will select the ISL path.
NPV switches do not have ISL (E or TE ports) and are linked through IPv4.
Note
Difference Between San Device Virtualization and FlexAttach
Port Virtualization
Figure 14-2
Virtualization.
Figure 14-8
FlexAttach Virtualization
Facilitates server management and has no
restriction on the end devices used.
WWN and Network Address Transport (NAT) is
allocated to host bus adapter (HBA)
No rewrite requirements.
Configuration distribution is not required for any
of the interface-based configurations.
Does not require device alias for virtual pWWN. Configuration is secured to device alias.
Allows automapping to the new HBA. Mapping
process is manual for NPIV.
OL-8007-10, Cisco MDS SAN-OS Release 3.x

Difference Between San Device Virtualization and FlexAttach Port Virtualization

describes the difference between SAN Device Virtualization (SDV) and FlexAttach Port
Difference Between SDV and FlexAttach Virtualization
SDV
Facilitates target and disk management, and only
facilitates disk and data migration.
WWN NAT and Fibre Channel ID (FC-ID) are
allocated on the virtual device, both primary and
secondary
FC-ID rewrite on the switch indicates a
rewrite-capable switch on the path.
Configuration is distributed. This allows
programming rewrites and connectivity
anywhere.
Does not allow automapping to the secondary
device
Cisco MDS 9000 Family Fabric Manager Configuration Guide
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