ERPS issue

Created: Dec 19, 2018 09:01:47Latest reply: Dec 20, 2018 17:01:41 416 15 0 0
  Rewarded Hi-coins: 0 (problem resolved)
This post was last edited by user_3239949 at 2018-12-21 17:27. hi, guys, I have one issue about the ERPS.
The topology is as below:

The Core switch is the S12704, AGG switch is the S7706.
I have configured two rings, the ring 1 is the main ring, and the ring 2 is the sub-ring.
On the Core 1 and Core 2 it have configured two ERPS ring.
When I shutdown the link between the Core 1 and Core 2, then shutdown the any one link on the Ring 1. It mean shutdown two Link on Ring 1.
After that operation, the service on the Ring 1 is down.
Why the service will not go to the Ring 2 ? How to solve it? Please give me suggestion, thank you very much!I have check the configuration which you answer, but it not solve the issue?
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JoneSnow  Visitor   Created Dec 20, 2018 15:57:50 Helpful(0) Helpful(0)

ERPS does not support two breakpoints, RING1 is the main ring, business will not pass through the sub-ring. It can only be achieved through STP.
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Jessica_Tian  Visitor   Created Dec 19, 2018 10:36:12 Helpful(0) Helpful(0)

could you show your main configuration ?
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Mark.hu  Enthusiast Technician   Created Dec 20, 2018 11:08:01 Helpful(0) Helpful(0)

Check if the ERPS ring and status are normal.

Under normal circumstances, the port role on the ERPS ring should have only one RPL Owner, and the other port roles are normal ports or RPL Neighbour ports.


Run the display erps [ ring ring-id ] verbose command in any view to check the information about the ERPS ring on the local device. Check the ring status of the node on the node. .


If the ERPS ring is incomplete or the status is not normal:

Please check whether all devices on the ERPS ring have joined the ERPS ring.

Check whether the configurations of the ERPS ring on the ERPS ring are consistent, including the ERPS version number and the primary ring/subring configuration.

Check that the port role, control VLAN, and protection instance are correctly configured on each device on the ERPS ring.

Please check if the relevant port has been configured to allow the specified data VLAN to pass.


Hope this can help you

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user_3239949     Created Dec 20, 2018 11:34:23 Helpful(0) Helpful(0)

this is not the best answer, who can help me
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user_3239949     Created Dec 20, 2018 11:38:34 Helpful(0) Helpful(0)

Posted by Mark.hu at 2018-12-20 11:08 Check if the ERPS ring and status are normal.Under normal circumstances, the port role on the ERPS r ...
bro, this is not the answer, the issue still exist
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user_3239949     Created Dec 20, 2018 11:45:27 Helpful(0) Helpful(0)

This answer did not solve the problem, this forum is too bad.
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user_3239949     Created Dec 20, 2018 11:46:18 Helpful(0) Helpful(0)

where I can complain it?
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chenhui  Addict   Created Dec 20, 2018 13:40:52 Helpful(0) Helpful(0)

@user_3239949 could you please provide more information ?
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chenhui  Addict   Created Dec 20, 2018 13:57:16 Helpful(0) Helpful(0)

does your confiuration matchs the describtion of @Mark.hu ? or are there any error logs on your device ?
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user_3239949     Created Dec 20, 2018 15:03:58 Helpful(0) Helpful(0)

My issue is when I shutdown the link between the two core, then shutdown other link on the ring1 , the packet not forward by the ring 2, I want to know why it not go to ring 2 ?
if I only shutdown one link on ring 1, the service is OK.
the ring 1 is main ring, ring 2 is sub-ring.
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