3Com Switch 4800G 24-Port Configuration Manual - page 18
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3) To copy the test.bin file on the master to the root directory of the flash on IRF member slave 3,
perform the following steps:
slot3#flash:
//The above information indicates that the current working path is the root directory of the flash on slave
3.
flash:
// The above operations indicate that the current working path is the root directory of the flash on the
master.
Copy flash:/test.bin to slot3#flash:/test.bin?[Y/N]:y
%Copy file flash:/test.bin to slot3#flash:/test.bin...Done.
Configuration file management
1) Configuration file synchronization
IRF uses a strict configuration file synchronization mechanism to ensure that devices in an IRF virtual
device can work as a single device on the network, and to ensure that after the master fails, the other
devices can operate normally.
z
When a slave starts up, it automatically finds out the master, synchronizes the master's
configuration file, and executes the configuration file; if all devices in an IRF virtual device start up
simultaneously, the slaves synchronize the master's initial configuration file and execute it.
z
When the IRF virtual device operates normally, all your configurations will be recorded into the
current configuration file of the master, and are synchronized to each device in the IRF virtual
device; when you save the current configuration file of the master as the initial configuration file by
using the save command, all slaves execute the same saving operation to make the initial
configuration files of all devices consistent.
Through the real-time synchronization, all devices in the IRF virtual device keep the same configuration
file. If the master fails, all the other devices can execute various functions according to the same
configuration file.
2) Configuration file application
The configuration file can be divided into two parts: global configuration and port configuration. When a
slave applies these two kinds of configurations of the master, it deals with them in different ways:
z
Global configuration: All slaves execute the current global configuration on the master exactly, that
is, all members in the IRF virtual device apply the same global configuration.
z
Port configuration: When a slave applies the port configuration on the master, it cares about the
configuration related to its own port, for example, the slave with the member ID of 3 only cares
about the configuration related to the GigabitEthernet 3/0/x port on the master. If there is a
configuration related to its own port, it will apply the configuration; if not, no matter what
configuration has been made to the port before the slave joins the IRF virtual device, the slave will
function using null-configuration.
IRF virtual device topology 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