HP StorageWorks Edge Switch 2/12 Installation Manual page 55

Figure 18: Switch page—Fabric Parameters tab
4. Set the fabric parameters:
Edge Switch 2/12 Installation Guide
a. At the R_A_TOV field, enter a value between 10 and 1200 tenths of a
second (1 through 120 seconds). The default is 10 seconds (100 tenths).
All fabric-attached switches must be set to the same R_A_TOV. If the
value is not compatible, the E_Port connection to the switch segments and
the switch cannot communicate with the fabric. In addition, the
R_A_TOV must be greater than the E_D_TOV.
b. At the E_D_TOV field, enter a value between 2 and 600 tenths of a
second (0.2 through 60 seconds). The default is 20 tenths of a second (2
seconds).
All fabric-attached switches must be set to the same E_D_TOV. If the
value is not compatible, the E_Port connection to the switch segments and
the switch cannot communicate with the fabric. In addition, the
E_D_TOV must be less than the R_A_TOV.
c. Choose Principal, Never Principal, or Default from the Switch Priority
drop-down list. The default setting is Default.
This value designates the fabric's principal switch. The principal switch is
assigned a priority of 1 and controls the allocation and distribution of
domain IDs for all fabric elements (including itself).
Installing and Configuring the Edge Switch 2/12
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