Irf Multi-Active Detection - HP A5820X Series Configuration Manual

Or:
<Master> cd slot3#flash:/
<Master> mkdir test
%Created dir slot3#flash:/test.
To copy the test.app file on the master to the root directory of the Flash on member switch 3,
3.
perform the following steps:
<Master> pwd
slot3#flash:
//The current working path is the root directory of the Flash on slave 3.
<Master> cd flash:/
<Master> pwd
flash:
//The current working path is the root directory of the Flash on the master.
<Master> copy test.app slot3#flash:/
Copy flash:/test.app to slot3#flash:/test.app?[Y/N]:y
%Copy file flash:/test.app to slot3#flash:/test.app...Done.
Configuration file synchronization
IRF uses a strict configuration file synchronization mechanism to ensure that all switches in an IRF virtual
device can work as a single node on the network, and to ensure that after the master fails, the other
switches can operate normally.
When a subordinate switch starts up, it automatically gets and runs the master's configuration file.
•
If all switches in an IRF virtual device start up simultaneously, the subordinate switches get and run
the master's startup configuration file.
Any configuration you made on the IRF virtual device is stored on the master and synchronized in
•
real time to each member switch. When you save the current configuration to the startup
configuration file of the master by using the save command, all subordinate switches execute the
same saving operation.
This real-time configuration synchronization ensures that all the IRF member switches keep the same
configuration file. If the master fails, all the other switches can still operate with the same configuration
file.
IRF virtual device topology maintenance
As soon as a member switch is down or an IRF link is down, its neighbor switches broadcast the leaving
of the switch to other members. When a member switch receives the leave message, it looks up its IRF
topology database to determine whether the leaving switch is the master. If yes, the member switch starts
a master election and updates its IRF topology database. If the leaving switch is not a master, the
member switch directly updates its IRF topology database.
An IRF port goes down only when all its physical IRF ports are down.

IRF multi-active detection

An IRF link failure causes an IRF virtual device to split in two IRF virtual devices operating with the same
Layer 3 configurations, such as the same IP address. To avoid IP address collision and network
problems, IRF uses the MAD mechanism to detect the presence of multiple identical IRF virtual devices
and handle collisions. MAD provides the following functions:
Detection
1.
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