Date: Tue, 21 Jul 1998 12:20:39 -0700 (PDT) From: David Wolfskill <dhw@whistle.com> To: doug@bluesun.net, freebsd-isp@FreeBSD.ORG Subject: Re: RIP broadcasts.... Message-ID: <199807211920.MAA26691@pau-amma.whistle.com> In-Reply-To: <35B48DCE.EC4752BF@bluesun.net>
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>Date: Tue, 21 Jul 1998 12:47:10 +0000 >From: Jon Zobrist <doug@bluesun.net> >Hello everyone. I am running FreeBSD 2.2.6 on a machine connected to a >10BT hub, which is then connected to a 10BT switch. I have a machine >which dissappears from the internet occasionally.. Hmmmm.. >When it boots up it announces itself and appears in the routing table of >the router,, a cisco 75xx There is some reason the cisco isn't confgured to send everthying for a given network out a given interface? >Then disappears after a while, stops making broadcasts altogether.. I >have read through man pages, and read through the complete freebsd, and >talked with various people about it, including my upstream provider. My >current temporary solution is to have cron on another machine ping the >machine in question every few minutes, this seems to be working, but I >don't like this half assed approach.. In talking with several people I >discovered that I may need to be running RIP, or something... The >question is how do I enable RIP... I don't think I want to be running >routed, or gated... but what else would enable me to make >RIP broadcasts? Well, to enable RIP, run routed. (That's specified in /etc/rc.conf.) However, it isn't at all clear to me why this might be perceived to be useful; if the machine has but a single physical interface with the net, why not tell the machine (in /etc/rc.conf) that its "gateway" is the IP address of the (or "a") router for the net? That way, unless your network topology is rather more complicated than is so far apparent to me (though I may be a little thick-headed), you don't need to clutter your life or net with RIP. >In the book, the complete freebsd, in the manual configuration section >there is a netstat -r that shows a broadcast section (pg 320) which has >an address ff:ff:ff:ff:ff:ff flags are UHLWb Refs 2 >I have no such entry in my routing tables. Should i try to add the >route? if so what flag indicates it is a broadcast? I have Intel 10/100 >NIC, dev/fxp0 That seems strange; here: cvs[2]% netstat -nr Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 207.76.205.129 UGSc 0 1 fxp0 127.0.0.1 127.0.0.1 UH 2 590 lo0 207.76.205 link#1 UC 0 0 ... 207.76.205.156 link#1 UHLW 1 349 207.76.205.222 0:80:c7:84:43:4d UHLW 1 630 fxp0 1194 207.76.205.255 ff:ff:ff:ff:ff:ff UHLWb 0 1 fxp0 I certainly did *nothing* to (explicitly) create that entry. And in our case, the .129 address is that of the router for the net. >Any thoughts would be appreciated... Hope that helps, david -- David Wolfskill UNIX System Administrator dhw@whistle.com voice: (650) 577-7158 pager: (650) 371-4621 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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