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ISL on DWDM

  • 1.  ISL on DWDM

    Posted 06-05-2013 06:24 AM
      |   view attached

    Hello, I'm using a 8G DWDM link to connect 2 datacenters at ~50km distance.

    The DWDM device is an Alcatel-Lucent model 1830. My questions are :

    1. Does anybody have more documentation about using Alcatel-Lucent 1830 and Brocade DCX ? I wonder what tests have been made in regards of:

    vc_translation_link_init, ISL R_RDY, fill word, QOS and Credit Recovery. And if there are any best practise for these values while utilising this device.

    The only documentation I have about Alcatel-Lucent 1830 is the one in attachement.

    2. Currently I have the below configuration, but I'm not happy with  ISL R_RDY since this doesnt allow me to use more advanced features.

    However, if turning  ISL R_RDY off, link doesnt come as online. I have tried switching to Fill Word 0 and VC link init to 0 with both ISL R_RDY on or off, but I have following errors. Can somebody tell me how the  portcfgfillword & portcfglongdistance sequence can be done succesfully ? Firmware is v7.0.2c

    switch:FID128:admin> portcfgshow 1/0

    Area Number:              0

    Speed Level:              8G

    Fill Word(On Active)      3(A-A then SW I-A)

    Fill Word(Current)        3(A-A then SW I-A)

    AL_PA Offset 13:          OFF

    Trunk Port                ON

    Long Distance             LS

    VC Link Init              ON

    Desired Distance          176 Km

    Reserved Buffers          710

    Locked L_Port             OFF

    Locked G_Port             ON

    Disabled E_Port           OFF

    Locked E_Port             ON

    ISL R_RDY Mode            ON

    RSCN Suppressed           OFF

    Persistent Disable        OFF

    LOS TOV enable            OFF

    NPIV capability           ON

    QOS E_Port                OFF

    Port Auto Disable:        OFF

    Rate Limit                OFF

    EX Port                   OFF

    Mirror Port               OFF

    Credit Recovery           OFF

    F_Port Buffers            OFF

    Fault Delay:              0(R_A_TOV)

    NPIV PP Limit:            255

    CSCTL mode:               OFF

    switch:FID128:admin> portcfgfillword 1/0 0

    portcfglongdistance vc_translation_link_init conflicts with portcfgfillword configuration. Valid configurations are: vc_translation_link_init = 0, fillword = IDLE_IDLE or vc_translation_link_init = 1 fillword=ARB_ARB, IDLE_ARB, AA_THEN_IA

    switch:FID128:admin> portcfglongdistance 1/0 LS 0 176

    Warning: setting VC translation link init to 0 for extended fabric is not recommended. Consider changing it to 1.

    portcfglongdistance vc_translation_link_init conflicts with portcfgfillword configuration. Valid configurations are: vc_translation_link_init = 0, fillword = IDLE_IDLE or vc_translation_link_init = 1 fillword=ARB_ARB, IDLE_ARB, AA_THEN_IA

    3. In your experience, which is the best device for using for DWDM with Brocade DCXs ? in Brocade Compatibility Matrix there's plenty of them

    http://www.brocade.com/downloads/documents/matrices/compatibility-matrix-fos-7x-mx.pdf


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    Attachment(s)



  • 2.  Re: ISL on DWDM

    Posted 06-05-2013 12:01 PM

    flb,

    I've in all the Years, build 100 and much more Fabric's via WDM, but honestly newer work with Alcatel WDM Plattforms.

    I'll try to help you but need more info. Can you please provide for more configurations details at the WDM side ?

    From Alcatel WDM,  Inventory list, FW Release, are you using SFP or SFP+ ?

    Additional can you provide for SFP Part Number you use to build ISL Link ?

    Can I assume you are in Open Environments and not FICON ?

    if you don't want to post some Info about Config here in the community, this is my email address

    abongiorno_at_techhelp24_net


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