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This chapter describes the Cisco NX-OS Fibre Channel, virtual Fibre Channel, and Fibre Channel over Ethernet (FCoE) commands that begin with R.
To specify a preferred host to receive Registered Link Incident Report (RLIR) frames, use the rlir preferred-cond fcid command. To remove a preferred host, use the no form of this command.
rlir preferred-cond fcid fc-id vsan vsan-id
no rlir preferred-cond fcid fc-id vsan vsan-id
By default, the switch sends RLIR frames to one of the hosts in the Virtual SAN (VSAN) with the register function set to “conditionally receive” if no hosts have the register function set to “always receive.”
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The switch sends RLIR frames to the preferred host only if it meets the following conditions:
This example shows how to specify the FCID 0x654321 as the RLIR preferred host for VSAN 2:
switch(config)# rlir preferred-cond fcid 0x654321 vsan 2
This example shows how to remove the FCID 0x654321 as the RLIR preferred host for VSAN 2:
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Displays information about RLIR, Link Incident Record Registration (LIRR), and Distribute Registered Link Incident Record (DRLIR) frames. |
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To configure a registered state change notification (RSCN), which is a Fibre Channel service that informs N ports about changes in the fabric, use the rscn command.
rscn { multi-pid | suppress domain-swrscn } vsan vsan-id
Configures VSAN information or membership. The ID of the VSAN is from 1 to 4093. |
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This example shows how to configure RSCNs in multi-PID format:
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To cancel a Registered State Change Notification (RSCN) configuration on a Virtual SAN (VSAN), use the rscn abort command. To reverse the cancellation, use the no form of this command.
Specifies a VSAN where the RSCN configuration should be canceled. The ID of the VSAN is from 1 to 4093. |
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This example shows how to cancel an RSCN configuration on VSAN 1:
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To apply a pending Registered State Change Notification (RSCN) configuration, use the rscn commit command. To discard a pending RSCN configuration, use the no form of this command.
Specifies a VSAN where the RSCN configuration should be committed. The ID of the VSAN is from 1 to 4093. |
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If you commit the changes made to the active database, the configuration is committed to all the switches in the fabric. On a successful commit, the configuration change is applied throughout the fabric and the lock is released.
This example shows how to commit an RSCN configuration on VSAN 1:
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To enable distribution of a Registered State Change Notification (RSCN) configuration, use the rscn distribute command. To disable the distribution, use the no form of this command.
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The RSCN timer configuration must be the same on all switches in the Virtual SAN (VSAN). Cisco Fabric Service (CFS) automatically distributes the RSCN timer configuration to all switches in a fabric. Only the RSCN timer configuration is distributed.
This example shows how to enable the distribution of an RSCN configuration:
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To configure an event timeout value for a Registered State Change Notification (RSCN) on a specified Virtual SAN (VSAN), use the rscn event-tov command. To cancel the event timeout value and restore the default value, use the no form of this command.
rscn event-tov timeout vsan vsan-id
no rscn event-tov timeout vsan vsan-id
Event timeout value in milliseconds. The range is from 0 to 2000. |
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Specifies a VSAN where the RSCN event timer should be used. The ID of the VSAN is from 1 to 4093. |
The default timeout values are 2000 milliseconds for Fibre Channel VSANs.
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Before changing the timeout value, you must enable RSCN configuration distribution using the rscn distribute command.
The RSCN timer is registered with Cisco Fabric Services (CFS) during initialization and switchover.
This example shows how to configure an RSCN event timeout value on VSAN 1:
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