Technical data

Fabric OS Administrator’s Guide 7-5
Publication Number: 53-0000518-09
Preparing a Switch
7
Configuring a Single Switch
Single-switch configuration does not require IDID or fabric binding, provided that connected channels
are configured for single-byte addressing. However, you should configure IDID to ensure that domain
IDs are maintained.
Configuring a High-Integrity Fabric
To configure a high-integrity fabric (cascaded configuration):
1. Disable each switch in the fabric.
2. For each switch:
a. Enable the IDID flag.
b. Set the domain ID.
c. Install security certificates and keys.
3. Enable the switches; this builds the fabric.
4. Set up security on the primary FCS switch.
Use Quickmode for FICON, which activates the SCC_POLICY and does not create a DCC policy.
The security policies are distributed to each switch in the fabric. (For details on the Quickmode
procedure, refer to the Secure Fabric OS Administrator’s Guide.)
5. Connect and enable channel and control unit (CU) devices. The Query for Security Attributes
(QSA) response to the channel indicates that the fabric binding and IDID are enabled.
Figure 7-1 and Figure 7-2 show two viable cascaded configurations. These configurations require
Channel A to be configured for two-byte addressing and require IDID and fabric binding. There can be
only two switches in the path from the channel to the control unit.
Figure 7-1 Cascaded Configuration, Two Switches
Figure 7-2 Cascaded Configuration, Three Switches
Channel
A
Control
Unit
B
Switch
Domain ID = 21
Switch
Domain ID = 22
Channel
A
Control
Unit
C
Control
Unit
D
Switch
Domain ID = 23
Switch
Domain ID = 21
Switch
Domain ID = 22