# [OmniOS-discuss] Configuring Jumbo frames

Volker A. Brandt vab at bb-c.de
Mon Sep 21 20:28:23 UTC 2015

- Previous message: [OmniOS-discuss] Configuring Jumbo frames
- Next message: [OmniOS-discuss] Configuring Jumbo frames
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    Hi Steve!

    >            I have several bnx interfaces, bnx0 bnx1 bnx2 bnx3. I
    > want to directly connect bnx2 and bnx3 to another machine (ie. no
    > switch ), and configure jumbo frames on these interfaces only. Is
    > this possible

    Yes.

    > and what do I need to do?
    >
    >     In bnx.conf I found this line
    >
    > ############################################################################
    > # mtu : Configures the hardware MTU size.  The valid range for this
    > # parameter is 60 to 9000.  The default value is 1500.
    > #
    > #mtu=1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500;
    >
    >      Should I put something like
    >
    > mtu=1500,9000;

    No.  The line you quoted defines the settings for 16 instances
    of the bnx driver.  To set jumbo frames for instances #2 and #3 only.
    you would need remove the comment sign and change it to

    mtu=1500,1500,9000,9000,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500,1500;

    >       in bnx.conf and can I control the mtu on the particular
    > interface with ifconfig and hostname.bnx files??

    Forget those.  This is OmniOS and the 21st century. :-)

    Use dladm, as in:

      dladm set-linkprop -p mtu=9000 <link>

    where <link> is the name of your datalink, e.g. "bnx2" (if you have
    not renamed it to be something else).

    Hope this helps -- Volker
    --
    ------------------------------------------------------------------------
    Volker A. Brandt               Consulting and Support for Oracle Solaris
    Brandt & Brandt Computer GmbH                   WWW: http://www.bb-c.de/
    Am Wiesenpfad 6, 53340 Meckenheim, GERMANY            Email: vab at bb-c.de
    Handelsregister: Amtsgericht Bonn, HRB 10513              Schuhgröße: 46
    Geschäftsführer: Rainer J.H. Brandt und Volker A. Brandt

    "When logic and proportion have fallen sloppy dead"

- Previous message: [OmniOS-discuss] Configuring Jumbo frames
- Next message: [OmniOS-discuss] Configuring Jumbo frames
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

More information about the OmniOS-discuss mailing list