Network Storage Protocols Discussions

ISCSI: iswtu_evr: unexpected event id 185 reported

OMAYURCHENKO

Hi guys.

I try present LUN to Windows 2012 via iSCSI and recieve error:

ISCSI: iswtu_evr: unexpected event id 185 reported

Logs of FAS2040 confirm it:

[fas2040a:iscsi.warning:warning]: ISCSI: iswtu_evr: unexpected event id 185 reported

Mon Apr 28 04:52:39 GMT [fas2040a:iscsi.notice:notice]: ISCSI: New session from initiator iqn.1991-05.com.microsoft:srv-mxntap01.*.tst at IP addr 10.*.*.119

Mon Apr 28 04:53:37 GMT [fas2040a:iscsi.notice:notice]: ISCSI: Initiator (iqn.1991-05.com.microsoft:srv-mxntap01.ntap.tst) sent LUN Reset request, aborting all

Can somebody help me with troubleshooting this problem?

1 REPLY 1

Re: ISCSI: iswtu_evr: unexpected event id 185 reported

OMAYURCHENKO

I found solution by myself. What I did:

1. Install wireshark on server and checktraffic between server and fas2040.

2. Found a problem with segmentation TCP/IP packet.

3. Check MTU size.

    fas2040 - 9000

    server (both NICs) - 9000

4. I didn`t have access to managment of switch and didn`t have opportunity check MTU size on switch.

5. Reconfigure MTU on both sides to 1500 (I know that need 9000, both this just demo)

After it everything work correct.

View solution in original post

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