gratuitous ARP with em interface.

akanwar_at_digitarchy.com
Date: 05/29/03

  • Next message: Wes Peters: "Re: Cascading qmail servers" 
    To: freebsd-net@freebsd.org
Date: Wed, 28 May 2003 19:57:07 -0400

    Hi all,
      
    Is there a known issue with alias IPs on em interfaces not sending out
    gratuitous arps ?

    The situation is as follows:
     I am running a custom redundancy daemon that migrates the IP address of a
    server from one interface to another in case the active network path fails.
    Till now I was experimenting with two fxp interfaces and everything worked
    perfectly. i.e. when the ip address moved over (using a perl script to run
    ifconfig commands) it sent out grat. arps for each of its alias IPs. This
    allowed the router to update its Arp table and talk to the newly active
    interface.

    Now when I try running the code with em (gigabit Ethernet over copper)
    NICs, I simply do not see the gratuitous arps come out of the new interface.

    I am at a loss to understand what has changed. Could it be that the line
    DOWN -> UP time of the em interface is longer thereby causing a loss of
    ARPs ? Any suggestions ?

    Thank you.

     
     

    --------------------------------------------------------------------
    mail2web - Check your email from the web at
    http://mail2web.com/ .

    _______________________________________________
    freebsd-net@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-net
    To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"

  • Next message: Wes Peters: "Re: Cascading qmail servers"

    Relevant Pages