HP Cisco MDS 9020 Cisco MDS 9000 Family Fabric Manager Configuration Guide, Re - Page 383

Chapter 20 Configuring Interfaces Fibre Channel Interfaces Send documentation comments to [email protected] Graceful Shutdown Interfaces on a port are shutdown by default (unless you modified the initial configuration). The Cisco SAN-OS software implicitly performs a graceful shutdown in response to either of the following actions for interfaces operating in the E port mode: • If you shut down an interface. • If a Cisco SAN-OS software application executes a port shutdown as part of its function. A graceful shutdown ensures that no frames are lost when the interface is shutting down. When a shutdown is triggered either by you or the Cisco SAN-OS software, the switches connected to the shutdown link coordinate with each other to ensure that all frames in the ports are safely sent through the link before shutting down. This enhancement reduces the chance of frame loss. A graceful shutdown is not possible in the following situations: • If you physically remove the port from the switch. • If in-order-delivery (IOD) is enabled (see "In-Order Delivery" section on page 32-15). • If the Min_LS_interval interval is higher than 10 seconds (). Note This feature is only triggered if both switches at either end of this E port interface are MDS switches and are running Cisco SAN-OS Release 2.0(1b) or later. Setting the Interface Administrative State To disable or enable an interface using Fabric Manager, follow these steps: Step 1 Step 2 Step 3 Either expand Switches > Interfaces and then select Gigabit Ethernet or expand Switches > Interfaces and then select FC Physical. You see the interface configuration in the Information pane. Click the General tab. Click Admin. You see the drop-down box shown in Figure 20-3. Figure 20-3 Changing the Administrative Status of a Switch Step 4 Set the status to down (disable) or up (enable). OL-16184-01, Cisco MDS SAN-OS Release 3.x Cisco MDS 9000 Family CLI Configuration Guide 20-11