Best Stacking Topology Between X770 and X670

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Hi,

Which one is better of following?

1. Stacking with SummitStack-320 for all of two X770 and two X670 where Master configured only for one of two X770
2. Two X770 and two X670 stacked separately with SummitStack-160 and connect both stacks with bonded 4x 40GbE link

Best regards,
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Mrxlazuardin

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Posted 1 year ago

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Andrew Imam, Alum

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Hi Mrxlazuardin,

If you need to setup stacking with SummitStack-V320 between the two X770s & two X670s, each of the X670s need to be Summit X670V model and will requires a VIM4-40GX installed in each X670V switch. So please confirm if your X670s are X670V. And if so, please refer to the following GTAC Knowledge base article that has a link to the Stacking Tool (can be used to simulate different stacking scenario and compare capabilities including table sizes/modules needed and EXOS versions supported:

https://gtacknowledge.extremenetworks.com/articles/Q_A/Where-Can-I-Find-the-EXOS-Stacking-Tool

Please explore/use the Stacking Tool to compare options for stacking using a combination of switch platforms.

If your X670s are X670V and you have the VIM4-40GX installed in each X670V, please refer to the following GTAC article on the exact steps on how to best stack X770 & X670V (with a VIM4-40GX installed). The article assumes that you have one X770 & one X670V (with a VIM4-40GX installed) but the steps can be modified to include additional stacking nodes, as mentioned in your scenario:

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-build-a-stack-of-Summit-X770-and-X6...


If the X670 you have are not X670V model then the are not capable to support SummitStack-V320 and can only support SummitStack-V. If this is the case then it may be better to have two separate stacks (Two X770s in stack and the two X670s (non V) in another stack.

Please let us know if you have any questions.
Thank you.


Best regards,
Andrew
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Alexandr P, Embassador

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Hi Mrxlazuardin!

Also you can use https://stackingtool.extremenetworks.com/StackingTool/
With this tool also you will see stack performance and all possible stacks.

Thank you!
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Mrxlazuardin

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Hi Andrew,

Of course, it should be X670V or X670-G2. It seem the Stacking Tool doesn't compare to connecting two stacks scenario.

Best regards,
(Edited)
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Bin, Employee

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Hi Andrew,

Here is one table about matrix of switches and stacking methods from our Hardware Installation guide as you could also reference it. :)



http://documentation.extremenetworks.com/summit/Summit_Family_HW_Install/Stacking/r_combining-switch...


Best regards,
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Mrxlazuardin

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Hi Andrew,

I really understand about that table but I still don't get it in relation to my question. My main question is about to see if separating two X770 and two X670V/X670-G2 into two stacks is better or worst idea than connecting them all into single stack since all of them support SummitStack-320 and SummitStack-160.

Best regards,
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Alexandr P, Embassador

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Hi!

It's depends from your goals.
If you need more ports - then it can be single stack.
If you need more performance - you need separate stacks (In case - stack X770 with X670V).

If stack X770 with X670-G2 - you can use single stack.
If stack X770 with X670-V - you can see stack performance degradation



You can check this in https://stackingtool.extremenetworks.com/StackingTool/

Thank you!
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Mrxlazuardin

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Hi Alexandr,

Connecting all switches on single SummitStack-320 or having all switches on separate SummitStack-160 with 4x 40G bonded connection between both stacks will consume same port number. So, which one is better?

Best regards,
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Alexandr P, Embassador

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Hi!

It's depends from your topology, type of traffic and etc.

Thank you!