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AMSEAMANS

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9 years ago

A

AMSEAMANS

30 Posts

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2489

November 30th, 2017 10:00

MXL - VLTi - iSCSI OH MY!!!

We are experiencing a weird issue that should not happen, we think. 

We have two MXL fabric switches connected to each other with Forty Gb ports with VLTi. Our SANs are connected across both of those switches with SAN ports split between them for each SAN controller.  Our Blades are running VMware and have multiple nics using multipathing. 

Everything works, until we drop the VLT for whatever reason (switch change, reboot whatever). When that happens the storage goes berserk and we lose out iSCSI for our SQL servers. We do not know why as this should not happen. We should be able to drop the VLT without issue right? or reboot a switch without losing connections other than to the switch that is rebooting. 

Help me Obe Wan you are my only hope!  this IS the issue you want to help with. 

  • A

    AMSEAMANS

    30 Posts

    1704

    0

    Posted December 4th, 2017 07:00

    Thanks, All the non VLT ports are set as edge ports already.

  • A

    AMSEAMANS

    30 Posts

    1704

    0

    Posted December 4th, 2017 07:00

    not sure if this matters as 3 techs have not said this is an issue but peer routing is disabled on the VLT links. 

  • A

    AMSEAMANS

    30 Posts

    1704

    0

    Posted December 4th, 2017 08:00

    L2. 

    we were planning on moving the current gateway from our router to these MXL switches and use VRRP on them like the rest of the network. hmmmm.  Regardless of that I am still perplexed why stopping the VLT causes iscsi issues. 

  • A

    AMSEAMANS

    30 Posts

    1704

    0

    Posted December 4th, 2017 08:00

    everything regarding the vlt seems to be fine. I am not able to look at the logs for that time period but I will be able to later in the week when we attempt a change once again. 

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