Got it

HUB between eth-trunk

Created: May 20, 2020 03:32:45Latest reply: May 20, 2020 06:59:20 89 4 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hi,

Just think out a question, what if a HUB is placed between two switches which establish an Eth-trunk. In such situation, will the Eth-trunk establish successfully or not? Then, what if the HUB is replaced by another switch, will the eth-trunk establish successfully?

Please check the simple topology below.

-------------------------------------------------------------

| switch | ========== |HUB| ========== |switch|

-------------------------------------------------------------


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Featured Answers
Admin Created May 20, 2020 03:36:35 Helpful(0) Helpful(0)

Hi,
Theoretically, the eth-trunk wouldn't establish successfully when a HUB is implemented between the switches. And for the 2nd question, the LACPDU packets wouldn't pass through the switch by default, so the result is negative yet.

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chenhui Admin Created May 20, 2020 03:36:35 Helpful(0) Helpful(0)

Hi,
Theoretically, the eth-trunk wouldn't establish successfully when a HUB is implemented between the switches. And for the 2nd question, the LACPDU packets wouldn't pass through the switch by default, so the result is negative yet.

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  • convention:

user_3445655 Created May 20, 2020 03:39:09 Helpful(0) Helpful(0)

Posted by chenhui at 2020-05-20 03:36 Hi,Theoretically, the eth-trunk wouldn't establish success when a HUB implemented between the switch ...
What if enable the l2protocol-tunnel lacp under the middle switch?
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chenhui Admin Created May 20, 2020 05:46:14 Helpful(0) Helpful(0)

Posted by user_3445655 at 2020-05-20 03:39 What if enable the l2protocol-tunnel lacp under the middle switch?
Well, if the switch could forward the LCAPDU packet, then, there is no difference between such switch and HUB. So, the result is negative either.
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user_3445655 Created May 20, 2020 06:59:20 Helpful(0) Helpful(0)

Posted by chenhui at 2020-05-20 05:46 Well, if the switch could forward the LCAPDU packet, then, there is no difference between such swi ...
It seems that you are right, I tried in ensp, as you said, no success.
Anyway, thanks for your support.
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