1-11
(disabled) and all physical ports (usually the service ports) in them are shut down except for the
reserved ones to make sure that these IRF virtual devices cannot forward data traffic.
z
Failure recovery: An IRF link failure triggers IRF virtual device partition and thus causes
multi-active collision. In this case, repair the failed IRF link to make the collided IRF virtual devices
merge into one and the failure is recovered. If the IRF virtual device in the recovery state fails
before the failure is recovered, repair both the failed IRF virtual device and the failed IRF link, and
then the collided IRF virtual devices can merge into one and the failure is recovered. If the IRF
virtual device in the active state fails before the failure is recovered, enable the IRF virtual device in
the recovery state at the CLI to make it take over the active IRF virtual device and protect the
services from being affected. Then, recover the MAD failure.
z
When an IRF virtual device is portioned, the system disables all service ports on the member
devices from the loser side (equal to executing the
shutdown
command on these ports). However,
some ports are not disabled and they are called reserved ports. By default, only physical IRF ports
can be set to reserved ports. To set other ports (such as the port for telnetting) to reserved ports,
configure them at the CLI.
z
For configuration information about LACP, see
Ethernet
Link Aggregation Configuration
in the
Layer 2 - LAN Switching Configuration Guide
; for configuration information about BFD, see
BFD
Configuration
in the
High Availability Configuration Guide
.
IRF Virtual Device Configuration Task List
Before configuring an IRF virtual device, define the roles and functions of all the members. Because
some configurations takes effect after device reboot, you are recommended to follow the procedure
shown in
Figure 1-7
.
Figure 1-7
IRF configuration flow chart
You can connect physical IRF ports with SFP+ cables or fibers after activating IRF port configurations.
After the device detects that the IRF ports are connected normally, role election is started immediately,
and then the elected slaves automatically reboot.
When an IRF virtual device is formed, you can configure and manage it by logging in to any member
device. The operations you make take effect on the master, and are applied to all member devices. For
