ECIS4500 series support E-Ring – How to configure E-Ring (Dual Homing)? Follow

The network topology and configuration show as below.
Dual Homing topology:


Caution:
Please do not connect the Ethernet cable before finishing configuration of Dual Homing.
 
 
Configuration:
1. Since ring protection is a media redundancy protocol (IEC 62439-2), please disable any other anti-loop protection.
1-1 Disable Spanning-Tree on all ports: (It’s enabled by default)

 
1-2 Disable Loop Protection on all ports: (It’s disabled by default)


2. Configure Dual Homing on all switches.
- Master of Ring (switch A):

 
- Slave of Ring (switch B):


 
- Slave of Ring + Dual Homing (switch C):

 
Caution:
There are 2 types of Dual Homing ring port:
-  Primary port: primary path of Dual Homing.
-  Backup port: backup path of Dual Homing.
Both of them are on the same switch.  

3. Connect Ethernet cables.
Caution: backup port of dual homing switch always blocked by default. ( no link failure)
 
4. Check the Dual Homing status:
- Master of Ring (switch A):

 
- Slave of Ring (switch B):

 
 
- Slave of Ring + Dual Homing (switch C):

 
The status on each switch when link fails:

 
 

 
- Master of Ring (switch A): No impact on switch A.

 
- Slave of Ring (switch B): No impact on switch B.

 

 
- Slave of Ring + Dual Homing (switch C):
Port 3 link down.
And the state of port 4 is changed from blocking to forwarding.