On Wed, May 16, 2012 at 9:40 AM, Indunil Jayasooriya <induni...@gmail.com> wrote: > Hi, > > I am looking for a Load balancing and fail-over setup. So I am working on > below 2 subjects > > > How can I do equal-cost multipath routing? > > http://www.openbsd.org/faq/faq6.html > > > > Load Balance Outgoing Traffic > > http://www.openbsd.org/faq/pf/pools.html#outexample > > > My first question is how to do failover when one link goes down? > > Can I do it with ping and ifstated ?
You can and check man trunk as well. > > If yes, How to ping external internet host when that link is DOWN? I find > it difficult? > > I tried it with below commands > > > ping -I WAN1_if_ip www.google.lk > > ping -I WAN2_if_ip www.google.lk > > > Some times it works? some times it does NOT? > > Could you pls explain why? > > > If it does NOT ping, How to do failover? > > > So, Now, I am trying with snmpwalk command. I think it is OKAY? B your > comments? > > I found a URL here? > > http://old.nabble.com/Re:-ifstated-and-ping-p15546523.html > > > Then, the other question is that when loadbalancing works as expected , > > I will have to send https via one link as described in Openbsd site. > > Pls see below. > > http://www.openbsd.org/faq/pf/pools.html#outexample > > # B keep https traffic on a single connection; some web applications, > # B especially "secure" ones, don't allow it to change mid-session > pass in on $int_if proto tcp from $lan_net to port https \ > B B route-to ($ext_if1 $ext_gw1) > > > Then, If that link goes down, when, failiver happnes, How to send that > https traffic via other link? > > I think delete that rule and add another rule like this? am I right? > > pass in on $int_if proto tcp from $lan_net to port https \ > B B route-to ($ext_if2 $ext_gw2) > > > If I am right, How to delete the existing rule and add other rule when > failover happens? > > > Hope to hear from you. > > > > > -- > Thank you > Indunil Jayasooriya
