Service manual

2
Task 19: Configure the Element Manager Application
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Installation Tasks
3. Click the Fabric tab (Figure 2-30).
Figure 2-30 Configure Fabric Parameters Dialog Box
a. Type a value between 10 - 1200 tenths of a second (1-120
seconds) in the R_A_TOV field. This value must be greater
than the E_D_TOV value.
b. Type a value between 2 - 600 tenths of a second (0.2 - 60
seconds) in the E_D_TOV field. This must be greater lesser
than the R_A_TOV value.
NOTE: Fabric elements must be set to the same R_A_TOV and
E_D_TOV values. An ISL between fabric elements with different
values segments and prevents communication.
c. Select from the Switch Priority drop-down list to designate 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). Available
selections are Default, Principal, and Never Principal.
Principal is the highest priority setting, Default is next, and
Never Principal is the lowest. At least one switch in a fabric
must be set as Principal or Default. If all switches are set to
Never Principal, all ISLs segment.