Hash Algorithm service in LAG

chenhui · Created May 10, 2021 09:52:33

Hi,
Link aggregation distributes the traffic based on the src-dst-ip mode by default.
The device will hash the IP address of the source and destination with MOD 4(suppose there are four links bound to the eth-trunk), and the result will be 0, 1, 2, or 3. The device will forward the traffic to the eth-trunk member link according to the MOD result.
For more information, you can refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100126530&id=EN-US_CLIREF_0177114614&lang=en

Abdussamed · Created May 10, 2021 09:34:52

Hi,
please check this

https://forum.huawei.com/enterprise/en/analysis-on-m-lag-route-forwarding-exceptions-on-the-ce6850-at-a-bank-site/thread/674001-861

I hope it helps!

chenhui · Created May 10, 2021 09:52:33

Hi,
Link aggregation distributes the traffic based on the src-dst-ip mode by default.
The device will hash the IP address of the source and destination with MOD 4(suppose there are four links bound to the eth-trunk), and the result will be 0, 1, 2, or 3. The device will forward the traffic to the eth-trunk member link according to the MOD result.
For more information, you can refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100126530&id=EN-US_CLIREF_0177114614&lang=en

SadeghSNF · Created May 10, 2021 11:04:27

Posted by chenhui at 2021-05-10 09:52 Hi,Link aggregation distributes the traffic based on the src-dst-ip mode by default.The device will ...

my question is, how device specify which packet pass which link ? to put it differently, device use which part of IP or MAC to distinguish the relevant interface ?

SadeghSNF · Created May 10, 2021 11:05:28

Posted by chenhui at 2021-05-10 09:52 Hi,Link aggregation distributes the traffic based on the src-dst-ip mode by default.The device will ...

My question is, how device specify which packet pass which link ? to put it differently, device use which part of IP or MAC to distinguish the relevant interface ?

chenhui · Created May 10, 2021 11:38:12

Posted by SadeghSNF at 2021-05-10 11:05 My question is, how device specify which packet pass which link ? to put it differently, device us ...

As far as I know, all the parts will be used. And that is hash algorithm, maybe the R&D guys are the one know that.

hash

Unicef · Created Feb 3, 2022 14:09:12

GREAT

Hash Algorithm service in LAG

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