Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual page 472

SANTap Issues
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
Table 23-3
Problem
Hosts, targets, HBAs or switches are not
supported by the interoperability matrix.
CVT is in the host VSAN.
IVR and SANTap are being used together.
VIs in a DVT VSAN (CVT and DVT in the same
VSAN).
Overprovisioning, including:
•
•
•
Same pWWN occurs more than once in the same
VSAN.
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
23-8
Common SANTap Mismatch Problems (continued)
Too many ITLs per SSM
Too many hosts per DVT
Too many ITLs per DPP
Chapter 23
Description
Review the Cisco SANTap interoperability
•
matrix at
http://www.cisco.com/en/US/products/ps598
9/products_device_support_tables_list.html.
The CVT is the portal through which the
appliance communicates with SANTap, and
cannot be in the host VSAN.
IVR and SANTap both perform straddling across
VSANs and cannot be used together.
This results in the creation of one CPP VI and
eight DPP VIs in the DVT VSAN. The VIs
attempt to login to DVT, resulting in
non-deterministic behavior.
When replication is enabled, AVT LUNs are
created, and that can increase the ITL count over
the limit. (See "Limitations" section on
page 23-2.)
If Reservation Support is not enabled on the RPA:
26 AVT LUNs are created at a time.
•
The appliance completes recovery of these
•
LUNs and then deletes them before creating
more.
This behavior does not significantly increase
•
the ITL count.
If Reservation Support is enabled on the RPA:
• All AVT and AVT LUNs are permanently
created.
• In RPA 2.3, only half the appliance posts are
zoned with AVTs. This does not increase the
ITL count significantly.
In RPA 2.4, all appliance ports are zoned with
•
AVTs. This behavior can increase the ITL
count significantly.
Misconfiguration can result in two DVTs (or two
VIs) with the same WWN in the same VSAN.
For example, assume that two DVTs are created
on different SSMs or on different DPPs. Both of
these DVTs have the same back-end VSAN.
When a host HBA logs into both DVTs, an
attempt is made to create two VIs with the same
WWN in the same back-end VSAN. This results
in non-deterministic behavior.
Troubleshooting SANTap
OL-9285-05