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
3-2
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 3 Managing Storage Services Modules
SSM Overview
Table 3-1
lists the features supported for the SSM
.
As shown in
Table 3-2
, Layer 3 Intelligent Storage Services traffic is disrupted when you update the SSI
boot image. If you configure Layer 3 Intelligent Storage Services on your SSM, we recommend that you
shut down these services before upgrading the SSI boot image. You can use dual fabric configuration to
minimize the impact of shutting down Layer 3 services.
Table 3-1
Cisco MDS SAN-OS Feature Support for the SSM.
Module
Cisco MDS SAN-OS Release
2.0(1b)
2.0(2b), 2.0(3), 2.0(4),
and 2.0(4a)
2.1(1a)
2.1(2) and later
SSM
None
Fibre Channel
switching
Fibre Channel
switching
Fibre Channel
switching
Intelligent Storage
Services
Intelligent Storage
Services
Intelligent Storage
Services
VSFN
VSFN
Nondisruptive
upgrade for Fibre
Channel switching
traffic
1
1.
Requires EPLD version 2.1(2) (see
“Installing EPLD Images on Modules” section on page 3-9
) and SSI boot image version
2.1(2).
When you upgrade, or downgrade, the SSI boot image on an SSM, you might disrupt traffic through the
module.
Table 3-2
describes how updating the SSI boot image affects SSM traffic.
Table 3-2
SSI Boot Image Updating Affects on SSM Traffic
Cisco MDS SAN-OS Release
Traffic Type
Disrupts Traffic?
2.0(2b) through 2.1(1a)
All
Yes
2.1(2) and later
Layer 2 Fibre Channel switching
only
No
1
1.
Requires EPLD version 2.1(2). See
“Installing EPLD Images on Modules” section on page 3-9
.
Both Layer 2 Fibre Channel
switching and Layer 3 Intelligent
Storage Services (such as
FCWA, NASB, SANTap, and
ISAPI virtualization)
Yes
Layer 3 Intelligent Storage
Services (such as FCWA, NASB,
SANTap, ISAPI virtualization)
only
Yes
