HP StorageWorks SN6000C HP StorageWorks C-Series Fabric Switches for SAN-OS 3. - Page 9
Using the Management Console or Telnet to Enable IOD
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IV. Enable In-Order Delivery of Frame During a steady-state environment, the hardware and software architecture of the C-series MDS 9000 Family prevents out-of-order (OOO) frame distribution from occurring. If the fabric encounters a failure, some devices may not be able to handle any OOO frames. For this reason, HP requires in-order delivery (IOD) be enabled for all switches. There is a switch setting to enable in-order of frames during fabric failure. Note: IOD feature is not supported on the MDS 9020. Using the Management Console or Telnet to Enable IOD Use the following procedure to enable in-order delivery (IOD) of frames with management console or telnet: 1. Log into the switch using either the management console or telnet 2. Enter your network-admin privileged account by entering your login name and password switch login: admin Password: 3. Enter the following: switch# show in-order-guarantee 4. The response shows whether or not in-order delivery is enabled If the display shows inorder delivery: guaranteed, in-order delivery of frames is enabled and no other steps are required If the display shows inorder delivery: not guaranteed, in-order delivery of frames is disabled; continue to the next step 5. Enter into the configuration mode by entering the following command: switch# config terminal 6. Enter the following command to set in-order delivery of frames: switch(config)# in-order-guarantee switch(config)# exit 7. Enter the following command to verify that in-order delivery is enabled: switch# show in-order-guarantee You should see the following response for all VSANs: inorder delivery: guaranteed 8. Copy the running configuration into the startup configuration by entering the following: switch# copy running-config startup-config Note: The running configuration overwrites the startup configuration. IOD must be enabled for any additional VSANs created. 9 MDS Multilayer Director & Multilayer Fabric Switches Release Notes