From owner-freebsd-questions Tue Jul 9 18:14:44 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D4FC737B400 for ; Tue, 9 Jul 2002 18:14:42 -0700 (PDT) Received: from njam.dhs.org (bkg8100by4lk.bc.hsia.telus.net [142.173.16.222]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3F36543E42 for ; Tue, 9 Jul 2002 18:14:42 -0700 (PDT) (envelope-from viktorlazlo@telus.net) Received: from localhost (viktorlazlo@localhost) by njam.dhs.org (8.11.6/8.11.6) with ESMTP id g6A1ERq01307; Tue, 9 Jul 2002 18:14:28 -0700 (PDT) (envelope-from viktorlazlo@telus.net) X-Authentication-Warning: njam.dhs.org: viktorlazlo owned process doing -bs Date: Tue, 9 Jul 2002 18:14:27 -0700 (PDT) From: Viktor Lazlo X-X-Sender: viktorlazlo@njam.dhs.org To: Lord Raiden Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Need help with network issue In-Reply-To: <4.2.0.58.20020709192110.009626b0@pop.netzero.net> Message-ID: <20020709170202.C504-100000@njam.dhs.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, 9 Jul 2002, Lord Raiden wrote: > Any suggestions on how to do this would help. I'm not going to setup a > cron job to do a ping every 2 minutes. That won't tell me much of > anything. I want something a little more detailed. Thanks. > Don't underestimate the humble ping, in addition to confirming if you can access the specified host it can also be used to: - verify if there are DNS issues by pinging by both hostname and IP address. - verify if packet loss is an issue - estimate (crudely) bandwidth by varying packetsizes sent to hosts and calculating the difference between the round-trip times - check for possible routing problems by pinging each host on a problematic route - collect information about sporadic connectivity problems by running ping in the background and reviewing its output for any patterns - perform basic traffic tests by running multiple pings in the background and varying packet sizes and intervals Available now at a computer near you! Cheers, Viktor To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message