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Fibre Channel (SAN)

Occasional Contributor
Posts: 8
Registered: ‎06-12-2011

Basic func

Hi Folks,

  What was the function of principal and sub-ordinate switch ?


External Moderator
Posts: 5,512
Registered: ‎02-23-2004

Re: Basic func

Are descripted as well in Command Reference Guide and FOS Admin Guide.

Regular Contributor
Posts: 201
Registered: ‎11-24-2009

Re: Basic func

Hi Saran,

There are two key tasks a principal switch is responsible for:

1. Principal switch handles domain ID assignment within the fabric.

2. It maintains time readings for the entire fabric (other switches must synchronize their clocks with principal switch).

In every fabric there is only one Principal switch, and all other switches are Subordinate.

Hope this helps a bit,


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