SUMMARY: LAG on primary network

From: Balaji Chandrasekar (balaji_at_temple.edu)
Date: 01/20/04

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    Date: Tue, 20 Jan 2004 11:20:51 -0500
To: tru64-unix-managers@ornl.gov

    Thanx to

    Dan Price
    Joachim Jäckel
    Ian barker

    I have attached the two replies, thanx again

    Ian Barker Wrote
    =================

    I did some testing in this area previously, and it seems that
    because lag0 is not automatically created prior to rc.config
    being parsed, this config fails.

    The solution was to do the lag creation and ifconfig work in
    /etc/inet.local instead, so that it is done after rc.config
    and just use a non-lag config on ee0 in /etc/rc.config

    i.e. bring the network up on just ee0 at boot, then add the
    redundant LAG connection shortly afterwards.

    cat >> /etc/inet.local << EOD
    echo "Starting Ethernet LAG."
    ifconfig ee0 down speed 200
    ifconfig ee2 down speed 200
    lagconfig -c lag=lag0
    lagconfig -c dist=roundrobin
    lagconfig -p ee0 key=1
    lagconfig -p ee2 key=1
    ifconfig ee0 up
    ifconfig ee2 up
    ifconfig lag0 10.0.0.1 netmask 255.255.255.0
    EOD

    Joachim Jäckel Wrote
    =====================

    Hi,

    yes i just configured LAG on a v5.1A system.

    I did the following:
    - normal network configuration for the first interface ee0
    - added the following lines to /etc/inet.local
    echo "/etc/inet.local: configuring link aggregation:"
    ifconfig ee0 down
    ifconfig ee0 delete
    lagconfig -c lag=lag0
    lagconfig -p ee0 key=1
    lagconfig -p ee1 key=1
    ifconfig lag0 $IFCONFIG_0 up
    echo ""

    I think, Netrain and LAG cannot coexist on the same
    interfaces.

    It is important, that there is a network config for one
    interface
    in /etc/rc.config. Before i did this, the default route was
    lost.
    So, in /etc/rc.config i find the following lines:
    ...
    NETDEV_0="ee0"
    export NETDEV_0
    IFCONFIG_0="172.16.4.1 netmask 255.255.255.0"
    export IFCONFIG_0
    NUM_NETCONFIG="1"
    export NUM_NETCONFIG
    ...

    Greetings from Berlin, Germany 

    --
Joachim Jaeckel
---- Original message ----
>Date: Tue, 20 Jan 2004 09:30:11 -0500
>From: Balaji Chandrasekar <balaji@temple.edu>  
>Subject: LAG on primary network  
>To: tru64-unix-managers@ornl.gov
>
>All
>
>Has anybody tried to configure lag(link aggregation) on 
their 
>primary network.
>
>We have a v5.1B machine which has 4 NIC ports 
>(ee0,ee1,ee2,ee3) and want to use ee0 and ee2 for LAG.
>
>Does anybody know if we could just change the /etc/rc.config 
>file like to do for NetRAIN to configure LAG too?
>
>Balaji./
>Balaji Chandrasekar
>
>http://www.balajichandrasekar.com
Balaji Chandrasekar
http://www.balajichandrasekar.com
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