Figure 3-2 Isf Visualization - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide

Figure 3-2 ISF visualization

Basic concepts of ISF are as below.
Operating modes
An ISF device supports two operating modes:
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
Use commands to switch an ISF device between the previous two modes.
Roles
Each ISF device is a member of ISF. There are three roles as below:
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
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The master device, backup device, and slave device are elected as roles. An ISF contains only
one master device, only one backup device, and multiple slave devices.
Member ID
An ISF uses member IDs to identify and manage member devices. Each member ID is unique
in the ISF. For example, the member ID is used in the interface ID in the ISF. When a switch
runs in standalone mode, the ID of an interface is tengigabitethernet1/1/1. When the switch
joins the ISF and its member ID is 2, the interface ID will be tengigabitethernet2/1/1.
Standalone mode: it runs independently, unable to form an ISF with other devices.
ISF mode: it can be connected with other devices to form an ISF device.
Master: it manages the entire ISF.
Backup: it works as a backup for the master device. In other words when the master
device fails, it becomes the master device.
Slave: it works as a backup for the backup device. In other words when the master and
backup device fail, the ISF will automatically elect a new master device from all slave
devices to replace the original master device.
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