3com S7906E Installationsanweisungen

 

1-5 

As shown in 

, two IRFs operate independently and steadily. You can connect them physically 

and perform necessary configurations to make them form one IRF, and this process is IRF merge. 

Figure 1-3 IRF merge 

 

 

As shown in 

, after an IRF is formed, the failure of the IRF link causes physical disconnection 

between two devices, and then the IRF becomes two IRFs. This process is IRF split. 

Figure 1-4 IRF split 

 

 

Member priority is a property of a member device and decides the role of the member device during a 

role election process. The greater the priority value, the higher the priority. A member with a higher 

priority is more likely to be a master. The priority of a device defaults to 1. You can modify the priority 

through command lines. 

IRF management involves four stages: 

, 

, 

. You need to first connect the IRF members physically, and then the 

devices will perform topology collection and role election, after that the IRF system can operate 

normally and enter the IRF management and maintenance stage. 

To make an IRF operate normally, you need to connect the IRF members physically. Physical ports 

used for IRF connection on devices are called physical IRF ports.  

You need to bind a physical IRF port to an IRF port. As a logical port, an IRF port can bind to one 

physical IRF port or, to realize link backup, can bind to multiple physical IRF ports (known as aggregate 

IRF port). The binding between a physical IRF port and an IRF port varies with device models. 

The S7900E series uses 10 GE optical ports as physical IRF ports. You can connect physical IRF ports 

with fibers. Fibers connect physical devices located very far from each other and provide flexible 

application.