On Apr 30, 1:30*am, "Thrill5" <nos...@somewhere.com> wrote:
> I believe that the problem is the you have configured a 5 second timeout,
> and your only polling every 15 seconds. *The falling-threshold of 5000 msec
> (5 seconds) means that if the last successful ping occured more than 5
> seconds ago, the sla is down. *This number is NOT how long it should wait
> for a response.
>
> "ttripp" <ttr...@manh.com> wrote in message
>
> news:bd179e9c-2900-4465-b9a5-...
>
>
>
> >I am trying to use ip sla with icmp-echo to control the entry of a
> > static
> > route in the routing table. *Currently I am using sla for controling
> > two routes, with more
> > to come. *My sla configuration looks like this:
>
> > ip sla monitor 5
> > type echo protocol ipIcmpEcho 10.120.26.5 source-ipaddr 10.120.26.60
> > frequency 15
> > ip sla monitor reaction-configuration 5 threshold-falling 5000
> > threshold-type consecutive
> > 3
> > ip sla monitor schedule 5 life forever start-time now
> > ip sla monitor 12
> > type echo protocol ipIcmpEcho 10.120.26.12 source-ipaddr 10.120.26.60
> > frequency 15
> > ip sla monitor reaction-configuration 12 threshold-falling 5000
> > threshold-type consecutive
> > 3
> > ip sla monitor schedule 12 life forever start-time now
>
> > ! Lines ommited
>
> > track 5 rtr 5 reachability
> > !
> > track 12 rtr 12 reachability
>
> > ! Lines omitted
>
> > ip route 10.100.30.0 255.255.255.0 10.120.26.5 track 5
> > ip route 10.1.3.12 255.255.255.255 10.120.26.12 track 12
>
> > As I understand it, the way I have this configured the router should
> > ping the two
> > configured ip addresses every 15 seconds, and if the 5000msec
> > threshold is surpassed three
> > consecutive times, then reachability is considered "down" and the
> > router is removed from
> > my table.
>
> > The problem is that I get the following log messages at random times:
>
> > 04-29-2009 10:00:23 Paris_-_WAN-PARIS-1_(10.60.10.1) 182: *Apr 29
> > 14:13:00:
> > %TRACKING-5-STATE: 12 rtr 12 reachability Down->Up
> > 04-29-2009 10:00:13 Paris_-_WAN-PARIS-1_(10.60.10.1) 181: *Apr 29
> > 14:12:50:
> > %TRACKING-5-STATE: 12 rtr 12 reachability Up->Down
>
> > However, monitoring from PRTG shows the ping response times for both
> > of these ip addresses
> > is in the 100-200msec time, which shouldn't be nearly enough to
> > trigger a Down->Up.
>
> > Also, each Down->Up is followed exactly 10 seconds later by an Up-
> >>Down. *This
> > happens each and every time. *I have four other routers configured the
> > same way and they
> > also have the same issue, and the same 100-200msec ping time, and the
> > same 10 second
> > Down->Up/Up->Down cycle.
>
> > Bandwidth utilization on the circuits these pings are going out on
> > varies, but the error
> > is generated even when traffic is nill.
>
> > So, has anyone seen anything like this before? *Thanks.- Hide quoted text -
>
> - Show quoted text -
Thanks. I opened a ticket with TAC and they said the same thing,
basically. It's fixed now.
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