Principles Of Isf; Figure 3-4 Isf Split - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide

Figure 3-4 ISF split

ISF domain
An ISF domain is a logical concept. To satisfy various networking applications, you can
deploy multiple ISFs, distinguished by domain IDs and independent of each other, in a
network. ISF involves the process of discovering devices, detecting device connectivity,
electing the master device and backup device, generating topology based on collected
information, and monitoring connectivity of member devices, thus ensuring normal operation
of the virtualization system.
Member priority
Member priority determines the role of a member device in role election. The greater the
priority value is, the higher the priority is and the more probably it can be elected as the
master device. The default priority of a device is 0. The greater the value is, the higher the
priority is. To make a device be elected as the master device, you can modify its member
priority to a high value on CLI before establishing an ISF. When two master devices have the
same priority, the one with a longer up time of the ISF will be elected as the master device. In
ISF mode, you can configure the priority of other devices on the master device.

3.2.2 Principles of ISF

Establishing an ISF consists of the following four phases:




Physical connection

To form an ISF, connect ISF physical interfaces of member devices. The connection medium
varies with the type of ISF physical interfaces supported by the ISCOM2600G-HI series
switch. When the ISF physical interface is an optical interface, connect it with fiber. In this
connection mode, you can connect distant member devices to form an ISF, thus making
networking more flexible.

ISF topology consists of two types: chain networking and ring networking, as shown in Figure
3-5 and Figure 3-6.
Physical connection: connect member devices physically.
Topology collection: the ISF automatically collects information to form topology.
Role election: the ISF automatically elects roles.
Management and maintenance
Connection medium
Connection topology
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
3 ISF
156