HP Cisco Nexus 5000 HP StorageWorks C-Series Fabric Switches for SAN-OS 3.3(4a - Page 9

Using the Management Console or Telnet to Enable IOD - switch architecture

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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

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9
MDS Multilayer Director & Multilayer Fabric Switches Release Notes
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
: <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.