1-12
IRF maintenance
In an IRF, direct neighbors exchange hello packets periodically (the period is 200 ms). Without receiving
any hello packet from a direct neighbor for ten periods, a member considers that the hello packets timed
out, and the IRF isolates the expired device in the topology and updates its topology database.
When an IRF port of a member becomes down, the member broadcasts the information to all the other
members immediately. If the IRF port of the master is down, an election is triggered.
IRF Configuration Task List
Before configuring an IRF, you need to define the roles and functions of all the members for better
planning. Because the configuration of some parameters takes effect after device reboot, you are
recommended to first configure parameters, power off the devices, connect devices physically, power
on the devices, and finally the devices will join in the IRF automatically. After an IRF is formed, you can
configure and manage the IRF by logging in to any device in the IRF. The operations you make take
effect on the master, and will be applied to the member devices in the IRF. For easy fault location and
device maintenance, the Switch 4800G provides slave view, where you can execute the
display
,
terminal
, and
debug
commands.
Complete the following tasks to configure IRF:
Task
Remarks
Configuring IRF Ports
Required
Setting a Member ID for a Device
Optional
Specifying a Priority for an IRF Member
Required
Specifying the Preservation Time of IRF Bridge
MAC Address
Optional
Enabling Auto Upgrade of Boot Files
Optional
IRF Configuration
Setting the Delay Time for the Link Layer to
Report a Link-Down Event
Optional
Connect the physical IRF ports of devices by using IRF cables (a ring connection is recommended)
or fibers, and then power on the devices.
Logging In to the Master
Required
Logging In to an IRF
Logging In to a Slave
Optional
IRF Configuration
Configuring IRF Ports
IRF can be enabled on a device only after the IRF ports are bound with physical IRF ports).
For how to bind the IRF port and physical IRF port(s) on an Switch 4800G series, see
Correspondence
between an IRF port and a physical IRF port
.
Follow these steps to configure IRF ports
To do…
Use the command…
Remarks
Enter system view
system-view
—
