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Ne 8000 M8 not connecting...

Ne 8000 M8 not connecting to Extreme X870 via 100 GB short range

Created: Oct 29, 2021 14:57:53Latest reply: Nov 4, 2021 18:25:04 347 16 0 0 0
  Rewarded HiCoins： 0 (problem resolved)
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Hi,


As the title say, we can't link up our Ne 800 M8 with a extreme X870 in a 100 Gb short range module.


- We've tried to connect both sides in Huawei and the ports links  (so the gbics are being recognized by the router)

- We've tried to enable FEC.

- The X870 with other switches works fine.


None of this works, any help?

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(1) (0)
chenhui
Admin Created Oct 29, 2021 15:25:19

Hi,
Is there any error logs?
Is the 100G interface a 50|100G interface? If yes, have you switched the interface speed to 100G?
Is the optical module a Huawei certificated module? If not, please replace it with a certificated one.
Can you please check the interface status through command 'display interface'?
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Carcara
Carcara Created Oct 29, 2021 16:41:06 (1) (0)
Hi!!!

It`s a 100G interface and it`s speed is configured to 100G.

I don`t know if it is certified but at the logs it appears to be installed ok and if a link two Huawei ports the link goes up, so the problem is the connection Extreme X Huawei.  
chenhui
chenhui Reply Carcara  Created Oct 30, 2021 06:32:03 (0) (0)
How about disabling FEC on both ends?  
Carcara
Carcara Reply chenhui  Created Nov 3, 2021 11:16:52 (0) (0)
That was the first try :(  
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(2) (0)
2#
ariase88
ariase88 Admin Created Oct 29, 2021 14:58:07

Thanks for contacting the Huawei community!

We are checking your question and will provide an answer to you shortly...
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little_fish
little_fish Created Oct 29, 2021 14:58:37 (0) (0)
Thanks.  
(1) (0)
3#
chenhui
chenhui Admin Created Oct 29, 2021 15:25:19

Hi,
Is there any error logs?
Is the 100G interface a 50|100G interface? If yes, have you switched the interface speed to 100G?
Is the optical module a Huawei certificated module? If not, please replace it with a certificated one.
Can you please check the interface status through command 'display interface'?
View more
  • x
  • convention：

Carcara
Carcara Created Oct 29, 2021 16:41:06 (1) (0)
Hi!!!

It`s a 100G interface and it`s speed is configured to 100G.

I don`t know if it is certified but at the logs it appears to be installed ok and if a link two Huawei ports the link goes up, so the problem is the connection Extreme X Huawei.  
chenhui
chenhui Reply Carcara  Created Oct 30, 2021 06:32:03 (0) (0)
How about disabling FEC on both ends?  
Carcara
Carcara Reply chenhui  Created Nov 3, 2021 11:16:52 (0) (0)
That was the first try :(  
(1) (0)
4#
JohnSnow_Bryan
JohnSnow_Bryan Created Oct 29, 2021 17:40:01

good question!

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Carcara
Carcara Created Oct 29, 2021 17:54:56 (1) (0)
Already did.
At Huawei i can only set enable.
At Extreme i can set cl74 or cl91, none woked.  
(1) (0)
5#
Diego.Silva
Diego.Silva MVE Author Created Oct 29, 2021 17:57:25

Friend,

validate the FEC configuration between both devices as it is. The setup needs to be the same.

Use the command "display interface (Interface ID)" to validate the FEC mode on the NE8000.

If it is different from the adjacent equipment, you need to change it and leave it the same. The command to carry out this modification is as follows.


# Set the FEC mode of 100GE 0/1/1 to the standard G.709 mode.
<HUAWEI> system-view
[~HUAWEI] interface 100ge 0/1/1
[~HUAWEI-100GE0/1/1] fec-eth standard

or fec-eth disable / undo fec-eth


Usage Scenario

Different FEC modes have distinctive internal error correcting algorithms and are supported by varied vendors. If interconnected devices have different FEC modes configured, FEC errors may occur. To prevent FEC errors, interconnected devices must have the same FEC mode. If the remote device's interface uses the standard G.709 mode, run the fec-eth standard command to set the FEC mode of the local device's connected 100GE interface to the standard G.709 mode.

Precautions

Two connected 100GE interfaces must have the same FEC mode.

The fec-eth disable command forcibly disables Ethernet FEC. The undo fec-eth command enables or disables Ethernet FEC based on the optical module types. By·default,·standard·Ethernet·FEC·is·enabled·on·optical·modules (SR4·or·CWDM4·MSA)·such·as·the·34061089·(QSFP28·short-distance)·and·34061378·(QSFP28·short·distance)·optical·modules.For other optical modules, Ethernet FEC is disabled by default.


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Carcara
Carcara Created Nov 1, 2021 17:30:54 (1) (0)
Hi,

I tried again but none works.
I`ve tried all possible fec modes :(

It`s possible that both FECs are incompatible?  
Diego.Silva
Diego.Silva Reply Carcara  Created Nov 1, 2021 18:27:09 (0) (0)
Yes, it's possible. You try the FEC standard?  
Carcara
Carcara Reply Diego.Silva  Created Nov 3, 2021 11:17:38 (0) (0)
Yes, don`t work  
Carcara
Carcara Created Nov 3, 2021 14:10:19 (0) (0)
Already did.
At Huawei i can only set enable.
At Extreme i can set cl74 or cl91, none woked.  
Diego.Silva
Diego.Silva Reply Carcara  Created Nov 3, 2021 14:25:55 (0) (0)
On Huawei you need set the none and on Extreme none too. On Huawei, is possible because i already configured this.  
(0) (0)
6#
Unicef
Unicef MVE Created Nov 1, 2021 15:39:40

Good answer
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(0) (0)
7#
Carcara
Carcara Created Nov 4, 2021 18:25:04

Hiiii,

We could solve the problem.
On Extreme we didn`t need to set any configuration.
At Huawei we need to set "fec-eth disable".

Thx for your help!
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