32 Installation Guide (AA-RSTZF-TE, November 2005)

Edge Switch 2/32 installation guide 53

Configuring fabric operating parameters

Use procedures in this section to set parameters on the Edge Switch for fabric operation. These

operating parameters are stored in NVRAM on the Edge Switch.

1. Ensure that the Edge Switch is set offline.

For instructions, see ”Setting the Edge Switch online and offline” on page 47.

CAUTION: Setting the Edge Switch offline terminates all Fibre Channel connections.

2. At the Hardware view, select Operating Parameters > Fabric Parameters from the Element

Manager window.

The Configure Fabric Parameters dialog box is displayed (Figure 22).

Figure 22 Configure Fabric Parameters dialog box

3. Use information in ”Fabric parameters” on page 53 to change settings as required for

parameters in this dialog box.

4. After you change settings, click Activate.

5. Back up the configuration data when you are finished configuring the Edge Switch.

6. Set the Edge Switch online.

For instructions, see ”Setting the Edge Switch online and offline” on page 47.

Fabric parameters

Configure the following parameters, as required by your fabric.

BB_Credit

Configure the Edge Switch to support buffer to buffer credit (BB_Credit) from 1 through 60. This is

the value used for all ports, except those configured for extended distance buffering (10--100 km).

The default value is 16. For a description of the buffer-to-buffer credit, see the industry specification,

Fibre Channel Physical and Signaling Interface.

R_A_TOV

Configure resource allocation time-out value (R_A_TOV) in tenth-of-a-second increments. This

variable works with the error detect time-out value (E_D_TOV) variable to control the Edge Switch’s

behavior when an error condition occurs. Resources are allocated to a circuit when errors are

detected and are not released for reuse until the time set by the R_A_TOV value expires. The default