3 Replies Latest reply: Dec 16, 2013 9:36 AM by scottgelb RSS

iSCSI traffic on e0M interface

GIRIDHARARP Novice
Currently Being Moderated

Hi,

 

I am looking for iSCSI traffic to go through e0M interface. But, iSCSI client error out saying "Login I/O error, failed". On NetApp Filer console  I see below error

"Mon Dec 16 03:26:31 GMT [bgl-ucsm-netapp-filer-A: iscsi.warning:warning]: ISCSI: network interface e0M disabled for use; discarding incoming connection from initiator IP addr 10.106.189.197"

 

I do understand that e0M should not be used for data traffic, but I am not looking for any performance here.  I went through discussion https://communities.netapp.com/thread/17020. but I did not find any answer. My Data ONTAP version is 8.0.1 -7-mode. Any help appreciated.

 

bgl-ucsm-netapp-filer-A> options interface

interface.blocked.cifs

interface.blocked.ftpd

interface.blocked.iscsi      e0b

interface.blocked.mgmt_data_traffic off        (value might be overwritten in takeover)

interface.blocked.ndmp

interface.blocked.nfs

interface.blocked.snapmirror

  • Re: iSCSI traffic on e0M interface
    aborzenkov Grand Marshal
    Currently Being Moderated

    Please show output of “iscsi interface show -a”

    • Re: iSCSI traffic on e0M interface
      GIRIDHARARP Novice
      Currently Being Moderated

      Hi,

       

      netapp-filer-A> iscsi interface show

      Interface e0a enabled

      Interface e0b enabled

      Interface e1a enabled

      Interface e1b enabled

      Interface e2a enabled

      Interface e2b enabled

      Interface e2c enabled

      Interface e2d enabled

      • Re: iSCSI traffic on e0M interface
        scottgelb Hall of Fame Certified Grand Marshal
        Currently Being Moderated

        A case where you have to check multiple places...you can disable from iscsi interface, or you can block with options (and disabled or blocked will prevent access).  In this case e0b isn't allowed because of options even though in the interface show list since it is in the blocked list.  But even though the management interface isn't blocked it isn't showing in the interface list as an available interface so it won't work.  I wouldn't use e0M for any data though (no VLAN support, and if a 3200 it is 100Megabit)...and in most new installs we don't use e0M just to prevent any issues.  Even for cDOT node management I prefer gigabit or 10 gigabit NIC or ifgrp for the lif.

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