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Problem descriptionOSN3500 product SSN1EMS4 pairs with metro1000 V3 SS49EFS veneer to open EPL service, and found that when the vctrunk port of the data veneer is set to tag attribute, the test frames do not pass; when the vctrunk port of the data veneer is set to access attribute, the test frames pass; but the actual service is normal.
ems4: 4.13 efs: 2.21
ems4: 4.13 efs: 2.21
Warning messageNone
ProcessingFor EFS single-wave version 2.21, the single-wave board only supports MAC bearer test frames.
For EMS4 single wave version 4.13, the single board supports MAC bearer and GFP bearer test frames.
3. For EFS single board, the test frames sent in MAC bearer mode are without VLAN data, that is, these packets are transmitted on the line without VLAN. At the same time, the single board receives the test frames without distinguishing whether they are with or without VLANs. That is, both sides of the vctrunk port to set any tag attribute, test frames are through, this has been verified in the laboratory.
4, for the EMS4 board, that can receive MAC bearer test frames and can receive GFP bearer mode, but for the reception of MAC bearer test frames, will identify the test frame is not with VLAN.
5, when the EMS4 single board and EFS single board pairs of business, EMS4 single board sends test frames, at the same time, will send two ways of test frames, but after reaching the EFS single board, can only receive MAC test frames, at the same time, respond to the MAC test frames, the EFS single board responds to test frames are not with VLANs, and after arriving at the EMS4 single board, due to the EMS4 single board will go to identify the test frames If it is not with VLAN, it will discard the ports with TAG attribute and allow the ACCESS ports to enter. This leads to the problem.
For EMS4 single wave version 4.13, the single board supports MAC bearer and GFP bearer test frames.
3. For EFS single board, the test frames sent in MAC bearer mode are without VLAN data, that is, these packets are transmitted on the line without VLAN. At the same time, the single board receives the test frames without distinguishing whether they are with or without VLANs. That is, both sides of the vctrunk port to set any tag attribute, test frames are through, this has been verified in the laboratory.
4, for the EMS4 board, that can receive MAC bearer test frames and can receive GFP bearer mode, but for the reception of MAC bearer test frames, will identify the test frame is not with VLAN.
5, when the EMS4 single board and EFS single board pairs of business, EMS4 single board sends test frames, at the same time, will send two ways of test frames, but after reaching the EFS single board, can only receive MAC test frames, at the same time, respond to the MAC test frames, the EFS single board responds to test frames are not with VLANs, and after arriving at the EMS4 single board, due to the EMS4 single board will go to identify the test frames If it is not with VLAN, it will discard the ports with TAG attribute and allow the ACCESS ports to enter. This leads to the problem.
Root CauseThe test frames are not carried in the same way.
2. There is a difference in the way the single board recognizes the test frames.
2. There is a difference in the way the single board recognizes the test frames.
Recommendations and Summary1. Upgrade the EFS board on the metro1000 V3 device to version 2.42, which supports test frames in MAC bearer mode and test frames in GFP bearer mode, so that the problem will not occur.
2, all products EFS single board early version of the board only supports MAC bearer test frames have this problem, you need to upgrade to the corresponding support for two bearer version.
3, OSN3500 SSN1EMS4 single board and EFT single board docking will not have this problem, because the EFT single board only supports the test frame of GFP bearer mode.
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