LAG sharing packet loss and high latency
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‎07-31-2017 05:56 PM
I have 2 swtiches X670G2-48x-4q, both are working correctly with a LAG (2 ports), version is EXOS 16.1.3.6-patch1-9
Switch1:
enable sharing 10 grouping 10,14 algorithm address-based custom lacp
Switch2:
enable sharing 2 grouping 2,15 algorithm address-based custom lacp
When i add a third and fourth link to the LAG in production, like this:
Switch1:
Configure sharing 10 add port 37,38
Switch2:
Configure sharing 2 add port 9,17
I can see packets losts and high latency.
What could be the issue?, should i disable the sharing, and enable it with the new ports?
Switch1:
enable sharing 10 grouping 10,14 algorithm address-based custom lacp
Switch2:
enable sharing 2 grouping 2,15 algorithm address-based custom lacp
When i add a third and fourth link to the LAG in production, like this:
Switch1:
Configure sharing 10 add port 37,38
Switch2:
Configure sharing 2 add port 9,17
I can see packets losts and high latency.
What could be the issue?, should i disable the sharing, and enable it with the new ports?
13 REPLIES 13
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‎01-22-2018 07:24 AM
Hello, all!
As Ram mentioned earlier, first of all you have to check microburst in your traffic.
Also reconfigure shared-packet-buffer on ports (because X670 has 10G ports and as higher the speed of the port, the more the microburst can be present on it).
Thank you!
As Ram mentioned earlier, first of all you have to check microburst in your traffic.
Also reconfigure shared-packet-buffer on ports (because X670 has 10G ports and as higher the speed of the port, the more the microburst can be present on it).
Thank you!
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‎01-20-2018 03:14 PM
We have exactly the same problem.
Was you lucky to find out the cause?
Was you lucky to find out the cause?
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‎01-20-2018 03:14 PM
Hello, Alexander!
If you has this issue and has valid service contract on your switches, you can wright to your local distributor about that.

Thank you!
If you has this issue and has valid service contract on your switches, you can wright to your local distributor about that.

Thank you!
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‎08-06-2017 11:16 PM
I understand the port congestion is still seen. Please refer the below mentioned knowledge base article for your reference:
https://gtacknowledge.extremenetworks.com/articles/Solution/Prevent-packet-drops
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-identifying-microburst-congestion-w...
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-verify-if-the-LACP-PDUs-are-receive...
Verify the above provided information and if this issue cannot be isolated. Could you please open a GTAC case to proceed further? So GTAC engineer can troubleshoot the congestion issue via remote session.
https://gtacknowledge.extremenetworks.com/articles/Solution/Prevent-packet-drops
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-identifying-microburst-congestion-w...
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-verify-if-the-LACP-PDUs-are-receive...
Verify the above provided information and if this issue cannot be isolated. Could you please open a GTAC case to proceed further? So GTAC engineer can troubleshoot the congestion issue via remote session.
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