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flb
New Contributor
Posts: 3
Registered: ‎04-03-2013
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56 domain IDs in a fabric

Hi,

I'm aware that domain IDs in a fabric can have values between 1-253.

However in scalability matrix for either FOS 7.x or 8.x , maximum value for domain IDs is 56.

Does anybody know where this limitation come from? 

Thanks!

Broadcom Moderator
Posts: 467
Registered: ‎03-29-2011

Re: 56 domain IDs in a fabric

The maximum value of 56 listed in the scalability matrix the maximum number of supported switches in a fabric (with a certain FOS code, product family etc), and not the largest number which can be used for as domain id....   

 

The number is the tested limit - for a stable fabric - of switch interconnected (with certain FOS version, type and interconnectons).




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flb
New Contributor
Posts: 3
Registered: ‎04-03-2013

Re: 56 domain IDs in a fabric

Thanks Martin! I see same figure for both FOS 7.x and 8.x regardless of platform Brocade DCX 8510 / X6 

So 56 domain IDs is the maximum safe number to have in a fabric as it was tested - but would there be scenarious where more would be permitted? Is there a process where Broadcom would validate environments where more could be allowed? Thinking of environments with a few DCXs and lots of 24/48 port switches i native mode (overall under the 6.000 ports limit)

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