Industrial Ethernet Switch User Manual
3onedata proprietary and confidential
31
Copyright © 3onedata Co., Ltd.
Operating method:
Enable Ring Group 1: Hello time can be disable too, if it enable, time of sending Hello
Step 1
packet could not be very fast, or it will influence CPU dealing speed.
Set up Port 7 and 8 of Device 100, 101, 102 and 103 to be Ring Port in Ring Group 1,
Step 2
Network ID is1, Ring Type is Single; as shown in figure. Set up Port 7 and 8 of Device
107, 108 and 109 to be Ring Ports in Ring Group 2, Network ID is 2. Ring Type is
Chain; as shown in figure below.
Use a wire to connect Port 7 and 8 of Device 107-109 in turn to make a chain. Use a
Step 3
wire to connect Port 7 and 8 of Device 100-103 in turn to make a Single Ring, Then
use a wire to connect Port 8 of Device 107 and Port 7 of Device 109 to normal port of
Device 102 and 103. Chain is finished.
Notes:
Port can not be trunking setting when it is already Ring port.
In the same single ring, identity must be consistent; otherwise it will not build a ring and
can not communicate.
All ring ports in the VLAN settings must be TRUNK tagged VLAN member, otherwise
can not communicate.
To form tangent ring or other complex rings, should pay attention to the ring identity
whether is it consistent, different single ring identification must be different.
7.1.2 RSTP
The first spanning tree protocol was invented in 1985 at the Digital Equipment
Corporation by Radia Perlman. In 1990, the IEEE published the first standard for the
protocol as 802.1D, based on the algorithm designed by Perlman. Subsequent
versions were published in 1998 and 2004, incorporating various extensions.
Although the purpose of a standard is to promote interworking of equipment from
different vendors, different implementations of a standard are not guaranteed to work,
