Question about Brocade Communications Systems SilkWorm 3900 Networking Switch

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Questions about Changing Domain ID's on Brocade SAN Switches : 3900 and 4100

Hi, I have a existing setup for 2 fabrics with 2 Brocade switches as part of each fabric. These 2 fabrics are ISLed together. I wanted to change the Domain ID's on these 4 switches during a downtime. When I changed the Domain ID's on the switches, we lost connectivity to all the hosts connected to the switch and none of ports would show the blinking lights on the web interface. The ports all showed steady green lights on the interface. I had to change the Domain ID'd to what they were before to restore connectivity. Can you please let me know the cause for this and also let know the correct procedure to change the Domain ID's on these Brocade. Regards, Leon Pereira

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if you are working with Port-Zoning, you have to update your Zone-Configuration after changing the Domain-ID.
If you look in Zone-Admin you can see the Zone-Members are Displayed like this: 1,0 ; 1,1 etc

Now, if you are changing the domain-id from 1 to 2, the name of the ports are 2,0 ; 2,1 ...
Zone Members are still 1,0 ; 1,1 ...

Add the new ports to the zone and delete the old ones, then it should work.

Regard, Stefan

Posted on Jan 08, 2009

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What's the command to check the domainID and what's the command to change the domainID of a joining switch. Say I want to connect a VA-40FC to my DcX core switches on AG mode, do i just run a fc cable and connect it ? i want to make sure ISL works between the 2 switches and no domainID conflict. Thanks for your help..

Posted on Sep 14, 2011

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I agree with stefen V. Before change the domian ID check that zoning were not configured with por-zoning. and also if you change the domian ID it will cause the entre fabric to rebuild agian. This will disturb your newtwork. If that was ok then you can change you domain d

Posted on Apr 06, 2009

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What is the resolution to this issue? This post didn't give any error codes from the SADE GUI, once the Domain ID's were restored. Hard to diagnose without an error response. ZT3000 "Beta tester of "0"s and "1's"

Posted on Aug 22, 2007

  • Anonymous Aug 22, 2007

    SADE = Storage Automated Diagnostic

    Brocade switches have a "Webtools" GUI.

    As far as I know, Steady green is the desired state for your ports since it means "Online (connected with device)"


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