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LCAS

LCAS

Created: Jun 19, 2020 09:03:01Latest reply: Jun 20, 2020 07:09:34 469 10 1 0 0
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By enabling LCAS,if we add or delete boundpath at port the service will not afftected,my question is how LCAS works. has LCAS reduce the transmitted rate of service or swith the afftected VC4 to protection.?



LCAS

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Malik3000
MVE Created Jun 20, 2020 07:09:34

Hi dear,
Lets suppose that you have 20 vc12 bounded in the vc trunk .
When you make the vc12 cross connection you try make 10vc12 pass in a path and the other 10vc12 to go through an other path for protection purposes .
Now if u dont have LCAS , when any of the 10 vc12 get cut , you will loss the whole traffic and the Ethernet will not be able to re-adjust the link speed and the service will be cut .
But if u have LCAS and u get a fail in 10vc12 so the speed will be re-adjusted and the service will not fail totaly but u will loss 10vc12 of the speed .
Ofcourse the customer will have reduce in the speed but the service will not totally stop and u have chance to change the 10vc12 to an other working path .
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Abubakarkhan
Abubakarkhan Created Jun 20, 2020 10:43:27 (0) (0)
Thanks mate, my understanding is clear now.  
Malik3000
Malik3000 Created Jun 20, 2020 16:48:38 (0) (0)
You are welcome  

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alexzcong
Created Jun 19, 2020 09:45:31

dear
as you said it will reduce the transmitted rate of service as lower speed side
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Abubakarkhan
Abubakarkhan Created Jun 19, 2020 10:28:26 (0) (0)
If its reduce the trx rate the customer or user might get degradation.Is in it?Or if there is any other impact then please mention here  
alexzcong
alexzcong Reply Abubakarkhan  Created Jun 20, 2020 01:02:46 (0) (0)
dear it's depond on the bandwith in used if full the when you reduce there must have delay,but if there's only used 50%,there' nothing impact for customer  
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liqiang185
liqiang185 Admin Created Jun 19, 2020 09:14:18

Hi,
We've noticed about your problem, and we're processing on it.
Kindly wait a second.
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alexzcong
alexzcong Created Jun 19, 2020 09:45:31

dear
as you said it will reduce the transmitted rate of service as lower speed side
View more
  • x
  • convention：

Abubakarkhan
Abubakarkhan Created Jun 19, 2020 10:28:26 (0) (0)
If its reduce the trx rate the customer or user might get degradation.Is in it?Or if there is any other impact then please mention here  
alexzcong
alexzcong Reply Abubakarkhan  Created Jun 20, 2020 01:02:46 (0) (0)
dear it's depond on the bandwith in used if full the when you reduce there must have delay,but if there's only used 50%,there' nothing impact for customer  
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Abubakarkhan
Abubakarkhan Created Jun 19, 2020 18:13:19

Requested to please response
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5#
Gustavo.HdezF
Gustavo.HdezF Admin Created Jun 19, 2020 18:24:58

Hello User. I shared with you the documentation about LCAS feature in the following link:


https://support.huawei.com/enterprise/en/doc/EDOC1100110471/c9142d0b/introduction


At the end of the introduction part said:


Adopting the LCAS function brings the network with the following benefits:


  • The LCAS dynamically adjusts (adds or deletes) the service bandwidth without affecting the availability of the existing services.


  • When some of the physical channels in a virtual concatenation group fail, with LCAS, the failed channels are shielded and the other physical channels still transport the services normally. This prevents the services from being interrupted when some of the physical channels fail. After the failed physical channels are restored, they can transport services.


Hope this information helps you.


Regards.


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6#
Abubakarkhan
Abubakarkhan Created Jun 19, 2020 19:04:09

To open link i need to register.

Just one thing hown fails VC is shielded once its intrupted, i need to know that once one VC is failed how is it possible it cannot effteced the service as you said it decrease the rate of trx so by doing so customer might face slow service, is in it?
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7#
Malik3000
Malik3000 MVE Created Jun 20, 2020 07:09:34

Hi dear,
Lets suppose that you have 20 vc12 bounded in the vc trunk .
When you make the vc12 cross connection you try make 10vc12 pass in a path and the other 10vc12 to go through an other path for protection purposes .
Now if u dont have LCAS , when any of the 10 vc12 get cut , you will loss the whole traffic and the Ethernet will not be able to re-adjust the link speed and the service will be cut .
But if u have LCAS and u get a fail in 10vc12 so the speed will be re-adjusted and the service will not fail totaly but u will loss 10vc12 of the speed .
Ofcourse the customer will have reduce in the speed but the service will not totally stop and u have chance to change the 10vc12 to an other working path .
View more
  • x
  • convention：

Abubakarkhan
Abubakarkhan Created Jun 20, 2020 10:43:27 (0) (0)
Thanks mate, my understanding is clear now.  
Malik3000
Malik3000 Created Jun 20, 2020 16:48:38 (0) (0)
You are welcome  
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