Brocade Web Tools Administrator's Guide v6.1.0 (53-1000606-02, June 2008)
Web Tools Administrator’s Guide 39
53-1000606-02
Changing system configuration parameters
3
Fabric settings
Configure the following fabric settings on the Fabric subtab of the Configure tab:
Enabling insistent domain ID mode
1. Open the Switch Administration window as described on page 31.
2. Disable the switch as described in “Enabling and disabling a switch” on page 36.
3. Click the Configure tab.
4. Click the Fabric subtab.
5. Select the Insistent Domain ID Mode check box.
6. Click Apply.
7. Ena bl e t he sw i t c h as described in “Enabling and disabling a switch” on page 36.
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, which are reserved for switch internal
functions.
BB Credit The buffer-to-buffer credit is the number of buffers available to attached devices for frame
receipt. The default BB Credit is 16. The range is 1–27.
R_A_TOV Resource allocation timeout value (in milliseconds). This variable works with the E_D_TOV
to determine switch actions when presented with an error condition. The default is 10000.
The possible range is (2*E_D_TOV) –120000. Values must be multiples of 1000.
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 valid range is 256–2112.
Switch PID Format Select a switch PID format from one of the following:
• Format 1 (0-base, 256 encoding)
• Format 2 (16-base, 256 encoding)
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
Choose 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.