[alcatel-nsp] LAG load balance issue 7210 SAS Sx 10G/100G

[Dejan Tepic]

I’m having issues regarding load balance on links between several 7210 SAS
Sx
Here is the topology:



SR1----100G----7210-A----2x10G----7210-B----2x10G----7210-C----10G----Accessnode



Traffic egressing 7210-A is not balanced between two 10G links. Not even
close (85/5 in percentage)

Traffic egressing 7210-B even worse almost zero traffic on one link



I’v checked interface configuration guide and information about LAG
hashing. I’v tested with different algorithms hash-1, hash-2 but nothing is
changing.

 I’m having issues regarding load balance on links between several 7210 SAS
Sx

Here is the topology:



SR1----100G----7210-A----2x10G----7210-B----2x10G----7210-C----10G----Accessnode



Traffic egressing 7210-A is not balanced between two 10G links. Not even
close (85/5 in percentage)

Traffic egressing 7210-B even worse almost zero traffic on one link



I’v checked interface configuration guide and information about LAG
hashing. I’v tested with different algorithms hash-1, hash-2 but nothing is
changing.



I have a ongoing TAC case and TAC suggested to make all ports in a LAG odd
or even which i did but it didnt help.

Latest TAC answer suggest everything is fine ” At this point I dont see
this to be an issue until and unless we know the type of traffic that is
egressing out of Lag. Its only that the fair distributed of traffic dint
happen on to the lag ports. This could happen when there is not much
variation available or variations that get nullify with the traffic streams
that are egressing out of the Lag”



I have updated TAC case with traffic information which is unicast traffic
between BNG och Access nodes.



Did anybody out there experienced this and solved it somehow?

Kind regards

Dejan
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