User guide

64 Sun Storage Fibre Channel Switch 5802 QuickTools User Guide • September 2008
■ Open the faceplate display for the switch you be configuring. Open the Switch
menu and select Switch Properties.
■ Right-click a switch graphic in the faceplate display, and select Switch Properties
from the popup menu.
FIGURE 3-7 Switch Properties Dialog
Domain ID and Domain ID Lock
The domain ID is a unique Fibre Channel identifier for the switch. The Fibre
Channel address consists of the domain ID, port ID, and the Arbitrated Loop
Physical Address (ALPA). The maximum number of switches within a fabric is 239
with each switch having a unique domain ID.
Switches come from the factory with the domain IDs unlocked. This means that if
there is a domain ID conflict in the fabric, the switch with the highest principal
priority, or the principal switch, will reassign any domain ID conflicts and establish
the fabric. If you lock the domain ID on a switch and a domain ID conflict occurs,
one of the switches will isolate as a separate fabric and the Logged-In LEDs on both
switches will flash to show the affected ports. Refer to the Sun Storage Fibre Channel
Switch 5802 Command Line Interface Guide for information about the Switch keyword
and the Domain ID Lock and Principal Priority parameters.
If you connect a new switch to an existing fabric with its domain ID unlocked, and a
domain conflict occurs, the new switch will isolate as a separate fabric. However,
you can remedy this by resetting the new switch or taking it offline then back online.
The principal switch will reassign the domain ID and the switch will join the fabric.