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some ports are not workin...

some ports are not working

Created: Jul 18, 2020 21:09:07Latest reply: Aug 13, 2021 16:16:54 518 6 1 0 0
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Dears

i have strange issue with my Quidway SS7703 V200R005C00SPC300

the issue is that the optical 10G ports was working fine with no issue but suddenly only 3 ports are working  while the other 37 port are down,, i changed the optical modules which is huawei modules and re installed the board still same issue

cheked the board it normal and working fine

also note donot know if it is related or not but one of the power module is Unregistered but it is present.

i suspected it is power issue but the there some ports working

also oe last thing most of the unworking ports have this alarm

Alarm information:

  RX loss of signal

  RX power low

can you advice me what could be the cause?

thanks dears in advance.

portdownerro down

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DDSN
Admin Created Jul 19, 2020 02:58:30

Hi user_3896063,
If RxPower Low is displayed, the received signal strength on the local end is too low. When this occurs, the local interface cannot go Up or may drop packets. Check whether the distance between the local and remote ends exceeds the maximum transmission distance of the remote optical module, whether the optical modules or fibers are damaged, whether the optical modules and fibers mismatch (for example, multimode fibers are used on a single-module optical module), whether joints of optical fibers are reliably welded, and whether the transmit power of the remote optical module is too low.
I hope it helps!
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user_3896063
user_3896063 Created Jul 19, 2020 06:08:07 (0) (0)
Thanks for your reply but I checked by another optical modules it did not work also. And the connection was working fine before was same cables and modules it is very strange. May be the ports itself got Faulty I donot know  
DDSN
DDSN Reply user_3896063  Created Jul 19, 2020 06:24:12 (0) (0)
According to your description, the hardware of the switch may be faulty. In this case, we cannot locate the fault. You are advised to contact the TAC, who will remotely access the network to locate the fault. Finally, a solution is provided.
https://e.huawei.com/en/service-hotline-query
I hope it helps!  
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olive.zhao
olive.zhao Admin Created Jul 19, 2020 01:06:10

Hello, dear!
It's nice to meet you in the community.
We're working on your problem. Please be patient.
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3#
DDSN
DDSN Admin Created Jul 19, 2020 02:58:30

Hi user_3896063,
If RxPower Low is displayed, the received signal strength on the local end is too low. When this occurs, the local interface cannot go Up or may drop packets. Check whether the distance between the local and remote ends exceeds the maximum transmission distance of the remote optical module, whether the optical modules or fibers are damaged, whether the optical modules and fibers mismatch (for example, multimode fibers are used on a single-module optical module), whether joints of optical fibers are reliably welded, and whether the transmit power of the remote optical module is too low.
I hope it helps!
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  • x
  • convention：

user_3896063
user_3896063 Created Jul 19, 2020 06:08:07 (0) (0)
Thanks for your reply but I checked by another optical modules it did not work also. And the connection was working fine before was same cables and modules it is very strange. May be the ports itself got Faulty I donot know  
DDSN
DDSN Reply user_3896063  Created Jul 19, 2020 06:24:12 (0) (0)
According to your description, the hardware of the switch may be faulty. In this case, we cannot locate the fault. You are advised to contact the TAC, who will remotely access the network to locate the fault. Finally, a solution is provided.
https://e.huawei.com/en/service-hotline-query
I hope it helps!  
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4#
Unicef
Unicef MVE Created Aug 7, 2021 07:36:48

Good answer
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andersoncf1
andersoncf1 MVE Author Created Aug 13, 2021 16:16:54

Good asnwer! Congrats some ports are not working-4085059-1
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