Date: Wed, 23 May 2001 08:53:08 -0700 (PDT) From: Tom Samplonius <tom@sdf.com> To: Sys Admin <admin@cb21.co.jp> Cc: freebsd-isp@freebsd.org Subject: Re: FreeBSD as Backup Router for a CISCO router Message-ID: <Pine.BSF.4.05.10105230847450.17104-100000@misery.sdf.com> In-Reply-To: <20010524005401F.admin@cb21.co.jp>
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On Thu, 24 May 2001, Sys Admin wrote: > > It is probably more important to know what interfaces the router has, > > and what kind of router it is. > > Sorry! I should have given more details. Router is a Cisco 2514 with 2 > ethernet interfaces. > > What do you mean by what kind of router ? ( Pardon my ignorance as I am new to > dealing with routers). As in model number. A Cisco 2514 is the lowest end Cisco with dual 10Mbps ethernet interfaces you can get. A FreeBSD box with dual NICs can easily exceed the performance of a 2514, especially since can you use fast ethernet. > > > 1. Is it possible to have FreeBSD router work in parallel with cisco > > > router ? What I would like to have the FreeBSD router up and running > > > in case cisco router fails without manual intervention as I am staying > > > far away from the network. (using routed) > > > > Not likely. Automatic takeover of a gateway IP and MAC by a standby > > router is possible. But Cisco uses propietary HSRP for that, while > > FreeBSD has support for VRRP. > > OK. This more or less means that I have to be there in person to activate the > backup router. Right ? Pretty much. You could run a routing protocol on the routers to announce themselves as gateways to your hosts. If the router stops, it will stop annoucing itself as a gateway. > > > 2. What is the better solution for a backup router ? Natd or routed ? > > > > Apples and oranges. routed doesn't do routing, it routing protocol > > daemon for RIPv1 and RIPv2. natd does network address translation. You > > don't need routed if you don't need RIP. You don't natd if you don't need > > NAT. > > Bit confused here. The reason I put natd is because when the router gave > problems, as a quick fix, I configured a gateway with natd and bridging. It > worked quite well. Is it a recommended alternative to a router ? > > I received a personal mail recommending to use gated. Planning to study that > soon. It depends on your network. Obviously a bridge and a router working in completely different ways. gated is a routing protocol daemon like routed. It doesn't actually do routing either. The FreeBSD kernel does the routing. > > Depends on the router it is replacing. Depends on the traffic levels. > > What kind of router is it? And what is the maximum Mbps and pps that is > > must be able to handle? > > I really haven't done any traffic analysis. But the traffic most probably > falls between low to medium. Since it is a Cisco 2514, I would say it is probably under 5Mbps sustained. > Thanks. > > Tad. Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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