3com S7906E 설치 설명서

 

1-3 

Figure 1-2 Diagram for IRF basic concepts 

 

 

As shown in 

, connect Device A and Device B and perform necessary configurations, and 

then the IRF is formed. This IRF has four main boards, one active switching & routing processing unit 

(SRPU) and three standby SRPUs, and two interface boards. The IRF manages the physical and 

software resources of both Device A and Device B uniformly. 

The following describes some basic concepts in IRF: 

The device can operate in either of the following two modes: 

z 

Standalone mode: The device operates in a standalone manner. It does not form any IRF with 

other devices.  

z 

IRF mode: The device interconnects with other devices to form an IRF. 

The devices that form an IRF are called IRF members. Each of them plays either of the following two 

roles: 

z 

Master: The one manages the entire IRF. 

z 

Slave: Member device(s) operate as the backup(s) of the master. When the master fails, the 

system elects a new master from the slaves to take over the original master.