Configuration Prerequisites; Pre-Configuration - H3C S9500E Series Configuration Manual

Configuration prerequisites

Configure a higher priority for a member switch that features good performance and rich functions
•
so that the switch can be elected as the master when two switches form an IRF fabric for the first
time.
• If you use a physical port of a switch as a physical IRF port when the switch operates in standalone
mode, the services configured on the port will become ineffective after the switch switches to IRF
mode. Make preparations in advance to ensure services are not affected.
Before establishing an IRF fabric, make sure that the system working mode of the member switches
•
is the same. If not, the IRF fabric cannot be established. For more information about the system
working mode, see Fundamentals Configuration Guide.
The member switches of an IRF fabric must work in the same rule match mode. This means that you
•
must configure the acl ipv6 enable command, or the acl ipv6 disable command on the switches. For
more information about the acl ipv6 command, see ACL and QoS Configuration Guide.
The member switches of an IRF fabric must be configured with the same VPN label processing mode.
•
This means that you must configure the vpn popgo command or the undo vpn popgo command on
the switches. For more information about the vpn popgo command, see ACL and MPLS
Configuration Guide.
Before establishing an IRF fabric, check that enhanced IRF mode is enabled on all member switches
•
or disabled on all member switches. If enhanced IRF mode is enabled on some member switches
but disabled on the others, the IRF fabric cannot be established. For more information about
enhanced IRF mode, see

Pre-configuration

Pre-configuration allows you to configure IRF ports, member IDs, and member priority on a switch
operating in standalone mode. These configurations do not affect the running of the switch, and take
effect only when the switch switches to IRF mode. Adopt this method to configure an IRF fabric before
establishing it. To enable switches operating in standalone mode to form an IRF fabric, you must
pre-configure their member IDs and switch their operating modes. If you configure the priority for a
switch as the greatest value when the switch operates in standalone mode, this switch can win the master
election and become the master after multiple switches form an IRF fabric for the first time. If you
configure IRF ports for member switches operating in standalone mode, they can directly form an IRF
fabric with other switches after their operating mode is switched to IRF. Pre-configurations enable the
member switches to reboot only once to establish an IRF fabric.
Complete these tasks to configure an IRF fabric in pre-configuration mode:
Task
Pre-configuring an
IRF member switch
in standalone mode
Enabling enhanced IRF mode
Saving the running configuration to the configuration file
to be used at the next system startup
"Enabling enhanced IRF
Binding a physical port to an IRF
port
Setting a member ID for the switch
Specifying a priority for the switch
mode."
Remarks
Required
Required
Optional
Optional
Perform this task to use three or four switches to
form an IRF fabric.
Required
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