04-19-2011 09:13 AM
I have a brocade module 4424 and i've have it ISL'd... however it refuses to take on the role of subordinate.
The domain ID is not the lowest. I have it connected to to other switches
switch 1 - Domain ID = 200 (principal)
switch 2 - Domain ID = 201 (subordinate... working)
switch 3 - Domain ID = 202 (supposed to be subordinate but keeps coming up as principal) I've checked the mode and fabricprincipal state is = disabled.
I'm getting confused. I've even tried changing the ID and reconfiguring the switch... nothing.
04-19-2011 09:20 AM
04-19-2011 09:39 AM
Not sure that this will fix my problem because I have the same setup in another site and it works.
Also, in this particular site I have another core FC switch and it's set up like this
switch1 - DID = 100 (Principal
switch2 - DID = 101 (subordinate... working)
switch3 - DID = 102 (subordinate... working)
In fact here is a breakdown of the site config:
Core Switches: A Fabric & B Fabric
Brocade 5100 Primary switch1 - DID = 100 (Principal) > Brocade 5100 Primary switch2 - DID = 200 (Principal)
Brocade 5424 switch2 - DID = 101 (subordinate... working) > Brocade 5424 switch2 - DID = 201 (subordinate... working)
Brocade 4424 switch3 - DID = 102 (subordinate... working) > Brocade 4424 switch3 - DID = 202 (NOT WORKING) stays in primary state
The 5424 & 4424 are ISL'd to the 5100's. This same setup exists at another site and works fine.
Just can't figure out why that last switch (switch3) isn't taking it's proper role as a subordinate.
04-19-2011 09:52 AM
In this Fabric you have set the DID as
switch 1 - Domain ID = 200
switch 2 - Domain ID = 201
switch 3 - Domain ID = 202
In the other working Fabric you are by DID 100, 101 and 102 also in range to/lowest as 127
by DID 200 you are definitively in Offset Mode also IM3
Another Princip to Set correct Switch as Principal and Subordinate is the DID and WWN Number.
Casually the Lowest WWN become as Principal, but you can force as Subordinate.
BTW, in the praxis don't make sense to set such HIGH DID by Small Fabric.
04-19-2011 12:07 PM
how are Principal Switch Selection priorities assigned?
Could you post the output of the following command from all three switches in your 2xx range:
# configshow|grep principalSwSelMode
There is a lot of confusion about principal switch selection mechanics.