Enabling insistent domain id mode, Configuring virtual channel settings – Dell POWEREDGE M1000E User Manual
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Web Tools Administrator’s Guide
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System configuration parameters
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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
2. Disable the switch as described in
“Enabling and disabling a switch”
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”
Configuring virtual channel settings
You can configure parameters for eight virtual channels (VC) to enable fine-tuning for a specific
application. You cannot modify the first two virtual channels because these are reserved for switch
internal functions.
ATTENTION
The default virtual channel settings are already optimized for switch performance. Changing the
default values can improve switch performance, but can also degrade performance. Do not change
these settings without fully understanding the effects of the changes.
VC Priority specifies the class of frame traffic given priority for a virtual channel.
To configure the virtual channel settings, perform the following steps.
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 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
into the switch, the PID is bound to the device WWN. Refer to