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EPL service does not work after configuration

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zara

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Issue Description

There are two OSN 3500, we config one EPL service with exterior port attribute is Hybrid, but we can not ping successfully with no VLAN message after configuration.

The GSCC version is 5.21.31.35;
The data service board is N1PEG8;

 

Alarm Information

NULL

Handling Process

1,Creat the service firstly and then change the port attribute to Hybrid secondly, the service will be ok.

2,If the problem has happened, we should change the port attribute to ACCESS and change it to Hybrid again, then the service will be ok.

3,Change the UNI port attribute from Hybrid to ACCESS for both resource node and sink node(of course it should accord with the service need).

This problem exsit for all the V2R11 versions of NG-SDH, we can upgrade to the V2R11C00SPC300  and its later versions to solve this issue ultimately. 

Root Cause

1, We recur this problem in lab, if we config the UNI port attribute firstly and then creat the EPL service secondly, then the service is not successful. If we creat the ethernet special line service firstly and then change the UNI port attribute to Hybrid, creat EPL service again, the new EPL service is still not successful.

2,Analysis by capturing packet, we find that if we set the port attribute to  Hybrid firstly and the creat the EPLsecondly, the default VLAN will not be stripped when the message with default VLAN pass through the port ,so the service can not be successful.

 

Suggestions

Not only EPL servcie has this problem, the other ethernet service also has this problem, if you finish config one ethernet service and the external port attribute is Hybrid, but you can not ping successfully with no VLAN ID massege, please refer to this case.

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