FS2620R Rack Model User’s Guide
Configuring the FC Host Channels
You can configure several settings for each FC host channel independently:
Enable/Disable—You can disable the FC host channels. You should disable a channel if you are not using it. This improves performance by stopping the router from continuously trying to acquire a link up.
Topology—You should be sure that the router’s topology setting is correct for your configuration. You can set the topology to:
–LOOP—Use this option for all configurations except when the router is connected to a switch F-port. See Installation Configuration Examples on page 2-11.
–POINT-TO-POINT—use this option only when you connect the router to a switch F-port. See Installation Configuration Examples on page 2-11.
–Auto Detection—Automatically detects the configuration based on loop initialization process or port address of switch or fabric. Use this option when you do not know what topology you are using or when you plan to change the configuration as you might during testing of the router.
✁FC loop ID—If the router is installed on an FC loop, you can change each channel’s Loop ID to meet your needs. You have two options for setting the Loop ID:
–SOFT—Use this setting if you do not care if the router’s Loop ID changes when you power down and power up. This setting lets the FC loop initialization process determine the Loop ID.
–Any number between 0 and 125—Select a specific number if you want the Loop ID to stay the same after you power down and power up. The Router Administrator software cannot tell you which Loop IDs are available. To be sure that you have successfully assigned the Loop ID you want, check the Loop ID after you reboot the router. If the router cannot get the specified Loop ID during the loop initialization process, it will try to get a soft address.
✁Router FC LUN—The router has just one FC LUN that you can change while you configure the FC channels. You can have three options for setting the router FC LUN:
–SOFT—Use this setting if you do not care if the router’s FC LUN changes when new devices are added to the back end. This setting assigns the FC LUN to the router after assigning the FC LUNs for the attached devices.
–Any number between 00 and 63—Select a specific number if you want the router’s FC LUN to stay the same when you add new devices and after you power down and power up.
–NONE—Use this setting if you do not want the router to display as a device on the host. The router’s LUN only needs to be visible if you are using CAPI or the Extended Copy function. If you are not using either of these, you can use the NONE setting.
