FW 07.00.00/HAFM SW 08.06.00 McDATA Sphereon 4500 Fabric Switch Installation and Service Manual (620-000159-320, April 2005)

2
Installation Tasks
2-93
Installation Tasks
NOTE: If the switch is attached to a fabric element, the switch and
element must be set to the same R_A_TOV value. If the values are not
identical, the E_Port connection to the element segments and the
switch cannot communicate with the fabric. In addition, the
R_A_TOV value must be greater than the E_D_TOV value.
b. At the E_D_TOV field, type a value between 2 through 600
tenths of a second (0.2 through 60 seconds).
NOTE: If the switch is attached to a fabric element, the switch and
element must be set to the same E_D_TOV value. If the values are not
identical, the E_Port connection to the element segments and the
switch cannot communicate with the fabric. In addition, the
E_D_TOV value must be less than the R_A_TOV value.
c. Select from the Switch Priority drop-down list to set the switch
priority. Available selections are Default, Principal, and Never
Principal. 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).
Principal is the highest priority setting, Default is the next
highest, and Never Principal is the lowest priority setting. The
setting Never Principal means the switch is incapable of
becoming a principal switch. If all switches are set to Principal
or Default, the switch with the highest priority and the lowest
WWN becomes the principal switch.
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.
d. Select from the Interop Mode drop-down list to set the switch
operating mode. This setting only affects the mode used to
manage the switch; it does not affect port operation. Available
selections are:
• McDATA Fabric 1.0 - Select this option if the switch is
fabric-attached only to other McDATA directors or
switches operating in McDATA fabric mode.