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

The network topology and configuration show as below,
Chain topology:

Caution: Please do not connect the Ethernet cable before finishing configuration of chain.
 
Note: 
There are 3 roles of chain:
- Head: A head switch of the chain.
- Tail: A tail switch of the chain.
- Member: The other switches join the chain topology.
 
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. Before configuring chain, disable Ring index 1 and index 2
Then configure chain on all switches.
- Head (switch A):

 
- Member (switch B):

- Tail (switch C):

 
Caution: 
There are 3 types of ring port:
- Head Port: a ring port in head of chain switch that connects to another topology
- Tail Port: a ring port in tail of chain switch that connects to another topology
- Member port: the other ring ports participate in the chain topology.
 
3. Connect Ethernet cables.
Caution: tail port of tail switch is always blocked by default (no link failure)
 
4. Check the chain status:
- Head (switch A):


 
 
- Member (switch B):

 
- Tail (switch C):


 
The status on each switch when link fails:

 
- Head (switch A): port 2 links down.


- Member (switch B): port 1 links down.

 
- Tail (switch C): state of port 2 is changed from blocking to forwarding.