Administrators Guide (Supporting Fabric OS v7.3.0) Manual
Fabric settings (Continued)TABLE 9
E_D_TOV Error detect timeout value (in milliseconds). This timer is used to flag a potential error
condition when an expected response is not received within the set time. The valid range is
1000 - (R_A_TOV/2)
Datafield size The largest possible data field size (in bytes). The range of valid values is from 256 through
2112.
Address mode Displays the addressing mode present in the switch.
Sequence Level
Switching
Select this check box to enable frames of the same sequence from a particular group to be
transmitted together. When this option is not selected, frames are transmitted interleaved
among multiple sequences. Under normal circumstances, sequence-level switching should
be disabled for better performance. However, some host adapters have issues when
receiving interleaved frames among multiple sequences.
Disable Device
Probing
Set this mode only if the switch N_Port discovery process (PLOGI, PRLI, INQUIRY) causes
an attached device to fail. When set, devices that do not register with the Name Server are
not present in the Name Server database.
Per-Frame Routing
Priority
Select whether to select per-frame routing priority. When enabled, the virtual channel ID is
used in conjunction with a frame header to form the final virtual channel ID.
Suppress Class F
Traffic
Applies only if VC-encoded address mode is also set. When selected, translative addressing
(which allows private devices to communicate with public devices) is disabled.
Insistent Domain ID
Mode
Set this mode to make the current domain ID insistent across reboots, power cycles, and
failovers. This mode is required fabric-wide to transmit FICON data.
WWN-based
Persistent PID
Set this mode to configure a PID persistently using a device’s WWN. When the device logs in
to the switch, the PID is bound to the device WWN. Refer to WWN-based persistent PID
assignment on page 62.
Enabling insistent domain ID mode
To enable insistent domain ID mode, perform the following steps.
1. Open the Switch Administration window as described in Opening the Switch Administration
window on page 52.
2. Disable the switch as described in Enabling and disabling a switch on page 58.
3. Select the Configure tab.
4. Select the Fabric subtab.
5. Select the Insistent Domain ID Mode check box.
6. Click Apply.
7. Enable the switch as described in Enabling and disabling a switch on page 58.
Configuring virtual channel settings
You can configure parameters for eight virtual channels (VCs) to enable fine-tuning for a specific
application. You cannot modify the first two virtual channels because these are reserved for switch
internal functions.
Enabling insistent domain ID mode
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