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Syntax
pex auto-config enable
undo pex auto-config enable
Default
PEX autoconfiguration is disabled in an IRF 3.1 system.
Views
System view
Predefined user roles
network-admin
Usage guidelines
After PEX autoconfiguration is enabled, the parent fabric identifies a device as a PEX once it
receives LLDP packets carrying the Port Extension TLV from the device. The parent fabric
automatically establishes a connection with the device and issues PEX settings to the device.
Before you enable PEX autoconfiguration, follow these restrictions and guidelines:
Make sure LLDP is enabled globally on the parent fabric.
Make sure the operating mode of candidate PEXs has been set to auto or PEX.
Make sure physical interfaces connecting to the parent fabric on the candidate PEXs can be
used as upstream member interfaces. To identify candidate upstream member interfaces, see
IRF 3.1 configuration in the virtual technologies configuration guide for the device.
Make sure LLDP is enabled on each candidate cascade member interface and no other
commands are executed on the interfaces.
For more information about the auto-issued PEX settings, see log messages or execute the
display current-configuration command.
Examples
# Enable PEX autoconfiguration in an IRF 3.1 system.
<Sysname> system-view
[Sysname] pex auto-config enable
pex group
Use pex group to create a PEX group and enter its view, or enter the view of an existing PEX
group.
Use
undo pex group to delete a PEX group.
Syntax
pex group group-id
undo pex group group-id
Default
No PEX groups exist.
Views
System view
Predefined user roles
network-admin
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