Cup In-Band Management; Fabric Binding; Ficon Configuration Requirements - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

FICON Configuration Requirements

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

CUP In-Band Management

The Control Unit Port (CUP) protocol configures access control and provides unified storage
management capabilities from a mainframe computer. Cisco MDS 9000 FICON-enabled switches are
fully IBM CUP standard compliant for in-band management using the IBM S/A OS/390 I/O operations
console.
The CUP specification is proprietary to IBM.
Note
CUP is supported by switches and directors in the Cisco MDS 9000 Family. The CUP function allows
the mainframe to manage the Cisco MDS switches.
Host communication includes control functions, such as blocking and unblocking ports, as well as
monitoring and error reporting functions.
You cannot block or prohibit the CUP port (0XFE).
Note

Fabric Binding

The fabric binding feature ensures that ISLs are enabled only between specified switches in the fabric
binding configuration. Fabric binding is configured on a per-VSAN basis.
This feature helps prevent unauthorized switches from joining the fabric or disrupting current fabric
operations. It uses the Exchange Fabric Membership Data (EFMD) protocol to ensure that the list of
authorized switches is identical in all switches in the fabric.
To enforce fabric binding, configure the switch world wide name (sWWN) to specify the xE port
connection for each switch. Fabric binding policies are enforced on every activation and also when the
port tries to come up. In a FICON VSAN, the fabric binding feature requires that all sWWNs are
connected to a switch and that their persistent domain IDs are part of the fabric binding active database.
In a Fibre Channel VSAN, only the sWWN is required; the domain ID is optional.
Use the show wwn switch CLI command to determine the sWWN to use for fabric binding.
The fabric binding feature must be enabled in each switch in the fabric that participates in the fabric
binding.
FICON Configuration Requirements
Use the following best practices for implementing FICON for Cisco SAN-OS products:
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Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
16-6
Use static domain IDs for all switches in the FICON fabric.
Do not enable persistent FC IDs for the FICON-enabled VSAN.
Enable in-order delivery for the FICON-enabled VSAN.
Enable fabric binding for all FICON switches in the fabric.
Use the source ID (SID)-destination ID (DID) load balancing scheme for the FICON-enabled
VSAN.
Set the VSAN interop value to default.
Chapter 16 Troubleshooting FICON
OL-9285-05