Date: Sat, 04 Jun 2005 22:06:39 -0700 From: John Pettitt <jpp@cloudview.com> To: Karan Gupta <kgupta@edgefocus.com> Cc: freebsd-questions@freebsd.org Subject: Re: Weird ping times Message-ID: <42A2885F.8080409@cloudview.com> In-Reply-To: <42A28734.3080805@edgefocus.com> References: <42A28734.3080805@edgefocus.com>
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Karan Gupta wrote: > Hi > I have a router setup with fBSD > #### uname output ######## > FreeBSD aaa.xxx.com 5.4-RELEASE FreeBSD 5.4-RELEASE #0: Wed May 25 > 15:08:04 PDT 2005 root@:/usr/src/sys/i386/compile/EFKERNEL i386 > > When i ping this machine from different networks i get the following > timings > > [snip] > > Alternate good and bad times!!! I rebooted the machine to no effect. > The problem seems to go away on its own for a few hours & then comes > back. I ran tcpdump & saw nothing different between the times this > behaviour was seen & the times it wasnt. > > The machine is running IPFW, isc-dhcp server and nat. > > > Any thoughts?? > does traceroute yield anything interesting? (from either end?) - ping times over a second sounds like a routing problem maybe outside the machine. I've also seen weird results with machines hat have USB serial ports on them where the machine dies for up to 16 seconds then comes back and all the ping packets come back at once with delays from a few ms to 16 seconds in one second steps.
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