which Protocol and configuration is suitable for this topology diagram?

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 For faster convergence and reliability we have this topology diagram, what protocol and security to be applied on this topology diagram?
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Alok Shukla

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Posted 8 months ago

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Sushruth Sathyamurthy, Employee

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Hi Alok,

I will not be able to tell you with certainty as to what you can use with this setup; That will depend on the full requirements of your network. But MLAG is a protocol you can use for L2 redundancy with this topology. MLAG is also an active/active configuration where both the uplinks to the core will be active from the access switch. In that sense, MLAG can  provide reasonable bandwidth utilization benefits also. I am attaching an article that explains how MLAG works in EXOS -
https://gtacknowledge.extremenetworks.com/articles/Solution/Key-Design-Points-of-an-EXOS-Multi-LAG
(Edited)
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Alok Shukla

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Hello Sushruth,

I am designing to create stack of X620 switch of 40Gb full duplex link. what medium is best for creating 40Gb full link.
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Lutha

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Hi Alok you can use the dedicated stacking ports for the switches to be stacked preferably in ring. 

you can use the 10G SFP+ DAC Cables in a lag configuraiton  for the interswitch links to the core 

alternatively you can stack the three x440 for better redundancy one switch as master one as back and one as standby should one of the other two fail. 

i suggest you use enhanced stacking for the swith stacks 
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Alok Shukla

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If I am creating stack of  X620(above diagram) and using EAPS proctocol over stack, when we connect edge switches then which protocol we use for best practice? (either STP or EAPS)
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David Coglianese, Embassador

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If the 620s are stacked you can run a lag from them to the 440s and run ELRP for loop protection.

If the 440s are in one location you could stack those as well.
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Bin, Employee

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Hi Alok,
You could use EAPS with SummitStack. 
But, just notice your switch version, since there is one software issue.

Please checkout the following article:
 In Summit stack, temporary loop occurs for short time interval in EAPS ring