3com S7906E Instruccion De Instalación

 

1-7 

After that, the IRF system is formed and the IRF enters the next stage: IRF management and 

maintenance. 

 

During the mergence, IRF election is held, and role election rules are followed. Members of the loser 

side will reboot and join the winner side as slaves. Whether the device reboots automatically or reboots 

with the execution of a command depends on the device model. 

 

After role election, an IRF is established: all member devices operate as a virtual device on the network, 

and all resources on the member devices are processed and managed by this virtual device. 

An IRF uses member IDs to uniquely identify and manage member devices. Suppose an interface on 

the device operating in standalone mode was named GigabitEthernet 3/0/1; after the device joined an 

IRF, it got a member ID of 2, and the name of the interface changes to GigabitEthernet 2/3/0/1. Member 

ID is also used in the file system management, for example, path chassis2#slot1#flash:/test.cfg 

indicates that a file named test.cfg is saved under the root directory of the flash on the SRPU in slot 1 of 

member device 2. 

Therefore, to ensure the uniqueness of member IDs, you need to plan and configure the member IDs of 

devices uniformly before they join the IRF. 

 

If the local active SRPU and local standby SRPU keep different member IDs of the device, the member 

ID kept by the local active SRPU will be applied after the start of the device. If the device with the 

member ID of 2 has only one active SRPU, after you plug in a standby SRPU that keeps a member ID 

of 3, the member ID of the device is still 2 and the member ID kept on the standby SRPU will be 

synchronized to 2. 

 

In an IRF, direct neighbors exchange hello packets periodically. A device may not receive hello packets 

if any of the following conditions occurs: 

z 

The link state is abnormal, that is, the link fails or is unidirectional. 

z 

The device is attacked. 

Without receiving any hello packet from a direct neighbor within ten seconds, a member considers that 

the hello packets timed out, and the slaves will reboot and try to join the IRF again.