Brocade Network OS Administrator’s Guide v4.1.1 User Manual
Page 76
NOTE
You can enter the RBridge ID configuration mode for any RBridge in the cluster from the cluster
principal node.
NOTE
You can change the principal node by using the logical-chassis principal priority and logical
chassis principal switchover commands. For more information about cluster principal nodes,
refer to
Selecting a principal node for the cluster
on page 77.
Converting a fabric cluster while preserving configuration
There is no specific command that can convert a fabric cluster to a logical chassis cluster while
preserving current configurations, but you can accomplish this task as follows:
1. Be sure that all nodes are running the same firmware version. Logical chassis cluster functionality is
supported in Network OS 4.0 and later.
2. Make sure all the nodes that you intend to transition from a fabric cluster to a logical chassis cluster
are online. Run either the show vcs or show vcs detail command to check the status of the nodes.
3. Determine which node contains the global configuration you want to use on the logical chassis
cluster, and make a backup of this configuration by running the copy global-running-config
command and saving the configuration to a file on a remote ftp, scp, sftp or usb location:
NOTE
If you need to combine the global configurations of two or more nodes, manually combine the
required files into a single file which will be replayed after the transition to logical chassis cluster
mode by using the copy global-running-config location_config_filename command. Refer to the
section
Taking precautions for mode transitions
on page 74
4. Back up the local configurations of all individual nodes in the cluster, by running the copy local-
running-config command on each node and saving the configuration to a file on a remote ftp, scp,
sftp, or usb location:
copy local-running-config location_config_filename
5. Perform the mode transition from fabric cluster to logical chassis cluster by running the vcs logical-
chassis enable rbridge-id all default-config command, as shown in
Converting a fabric cluster to
The nodes automatically reboot in logical chassis cluster mode. Allow for some down time during
the mode transition.
6. Run either the show vcs or the show vcs detail command to check that all nodes are online and
now in logical chassis cluster (listed as "Distributed" in the command output) mode.
7. The show vcs command output can also be used to determine which node has been assigned as
the cluster principal node.
switch# show vcs
R-Bridge WWN Switch-MAC Status
___________________________________________________________________
1 > 11:22:33:44:55:66:77:81 AA:BB:CC::DD:EE:F1 Online
2 11:22:33:44:55:66:77:82 AA:BB:CC::DD:EE:F2 Online
3 11:22:33:44:55:66:77:83* AA:BB:CC::DD:EE:F3 Online
The RBridge ID with the arrow pointing to the WWN is the cluster principal. In this example, RBridge
ID 1 is the principal.
8. While logged on to the principal node in the logical chassis cluster, copy the saved global
configuration file from the remote location to the principal node as follows:
copy location_config_filename running-config
Converting a fabric cluster while preserving configuration
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Network OS Administrator’s Guide
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