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TI Zone and WWN zoning

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  • 1.  TI Zone and WWN zoning

    Posted 05-07-2018 01:49 AM



    I created a TI zone including Initiator, 2 ISL, Target. The TI zone is active and enabled.


    My question is, do I still need to zone the initiator and target WWNs in the Basic Zone?


    When I remove the zone in the basic zone, connectivity is lost. 


    Many Thanks





  • 2.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 02:42 AM



    as i know you don't need additional zooning here if you are using TI zones.


    Are you creating zoning in edge fabric? Could you please paste ouptut of command : zone --show for your particular zone?



  • 3.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 04:06 AM

    Thanks for the reply.


    Output as requested:

    ZONE1_SAN_TOP:FID128:admin> zone --show
    Defined TI zone configuration:

    TI Zone Name: SVC_internode_TopSwitch_Zone1_Zone2

    Port List: 1,8; 1,13; 1,16; 1,21; 1,41; 1,45; 2,24; 2,29; 2,30; 2,35;
    2,65; 2,69

    Configured Status: Activated / Failover-Enabled
    Enabled Status: Activated / Failover-Enabled


    So basically, 1,41 1,45 2,65 2,69 are the two ISL links.

    The other 8 ports listed are the ports for the internode connectivity that I need between my devices.







  • 4.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 04:38 AM



    I've reviewed admin guide for FOS 7.2.x.


    I find out that:

    A TI zone only provides traffic isolation and is not a “regular” zone

    So based on that you need to have prober wwn/port zooning in place, becasue of that you've disrupted traffic once you've removed zone.


  • 5.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 05:03 AM

    That make sense. Thanks


    So what I'll do to test, is have my Basic Zone with the 8 WWNs active, then disable FailOver in the Traffic Isolation Zone. Followed by disabling the 2 ISL links. 

    Communication should dropped between my devices. If the communication link stays up, then I'll know the TI is not working like it should and the traffic is using the other 4 ISLs I have configured.


  • 6.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 05:20 AM

    Ok that didnt work.


    I disabled the two ISL links, but the link between my devices still remained active. 


    So it looks like the WWN zoning somehow uses the remaining ISL links.....


    Can I re-ask the question using simplier example?


    Server HBA into Port1 Switch1.

    ISL link Port2 Switch1 ----> Port2 Switch2
    Storage device into Port1 Switch2


    Normally you would zone Server HBA WWN with Storage device WWN so the server can see the storage.


    Now if you create TI zone with (1,1); (1,2) ; (2,1); (2,2) as per the above example, would you still need the WWN zones?






  • 7.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 05:27 AM

    My apologies. I think it did indeed work. Let me troubleshoot a little more and I'll give an update.





  • 8.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 06:05 AM



    im thinking about that you are using two ISL paths in one TI zone  1,41 1,45 2,65 2,69 which means that you did not defined end-to-end connectivity between devices..


    So from my perspective you have to use only one ISL or ISL trunk in one TI zone.


    But as i see you've used 65,69 which sit on same ASIC so im expecting that its trunked..isnt it ?


    please check output of :


    zone --showTItrunkerrors


  • 9.  Re: TI Zone and WWN zoning

    Posted 05-07-2018 10:06 PM

    Yes, the two ISL are in the same tunk. The other 4 ISLs are in the same trunk too. But these other 4 are not part of the TI zone.




    ZONE1_SAN_TOP:FID128:admin> zone --showTItrunkerrors
    Domain ID: 1

    No TI Trunk errors




  • 10.  Re: TI Zone and WWN zoning
    Best Answer

    Posted 05-08-2018 04:44 AM

    All is working well now.


    So I needed to move the other 4 ISL ports into a different port group(trunk). I did that by physically moving the 4 SPF into another group on the SAN switch.


    Previously I had all 6 ISLs in one trunk and tried to configure TI across 2 of them. This had caused strange problems!


    I tested it with failover and failover disabled and it worked exactly as expected.


    And to answer my original question, yes you do still need WWNs zoned in the Basic Zone as per normal.


    Thanks for your help





  • 11.  Re: TI Zone and WWN zoning

    Posted 05-08-2018 04:50 AM



    great to hear that you've solved your problem.


    But at least one thing from admin guide:


    For any trunk group, all the members of the group need to belong to the TI zone to prevent routing issues resulting from changes in the
    members of the trunk group. This applies to any E_Port or F_Port trunk groups that are included in TI zones using failover disabled

    So i think that situation when you add only couple of ports from trunk group is not good at all.