Date: Mon, 20 Mar 2000 07:58:05 -0500 From: "Troy Settle" <troy@picus.com> To: "Craig Beasland" <craig@hotmix.com.au>, <freebsd-isp@freebsd.org> Cc: "'Michael Hallgren'" <m.hallgren@free.fr> Subject: RE: Multihoming Message-ID: <NDBBLGJECLNPOOFNABJCAEAGCAAA.troy@picus.com> In-Reply-To: <A1FB33621BC3D311872D004005F62F6C5823@MANDELA>
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A 2503 will not take a 2 full tables. Plus, you wouldn't want to run a full session over a BRI. First, make sure that your upstream is capable of doing BGP over BRI. I know mine would likely laugh until I cried. Second, ask each of your upstream providers for limited tables. Customer and Peering routes are a good place to start. One trick, that might work for you, is to take *NO* routes from either upstream. Only advertise your own routes via BGP. This will ensure that the rest of the world always has a route back to you (assuming that at least one provider is up :). For your outbound, configure your router to spit packets out of both interfaces. If one goes down, the other will pick up the slack (well, as much as possible anyways :). If you want to do this right, get yourself at least a Cisco 3620 or 3640 (3640 will last longer), and get private line T1s to each of your providers. You won't regret it (though your accountant might kill you over it :) HTH, -- Troy Settle Picus Communications 540.633.6327 ** -----Original Message----- ** From: owner-freebsd-isp@FreeBSD.ORG ** [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of Craig Beasland ** Sent: Monday, March 20, 2000 2:25 AM ** To: freebsd-isp@freebsd.org ** Cc: 'Michael Hallgren' ** Subject: RE: Multihoming ** ** ** Michael, ** ** I do have my own portable address space, I cannot apply for an ** ASN until I ** am ready to proceed - I guess this is to stop people applying who then do ** not go ahead with the BGP routing. ** ** Does anyone know if a Cisco 2503 will allow me to do BGP, 1 ** frame link and ** one BRI. From the docs I've seen it will but it would be nice to have it ** confirmed. ** ** Cheers ** craig ** ** -----Original Message----- ** From: mh@roam.home.net [mailto:mh@roam.home.net]On Behalf Of Michael ** Hallgren ** Sent: Monday, 20 March 2000 15:05 ** To: Craig Beasland ** Subject: Re: Multihoming ** ** ** Craig Beasland wrote: ** Hi there,st ** ** Hi, ** ** A few questions: ** ** Do you have your own IP addresss space (PI) ? Do you have your ** own ASN ? In ** general I'd say the way to ** go would be to speak BGP with your upstreams, but you might also ** do fairly ** well with static routes seconded ** by floaters (depending on how your space is announced by your ** upstreams ?) ** Michael ** ** I run a small ISP and now require the ability to multihome. I ** have read an ** article that says (using a cisco router) I can add two default ** routes, with ** different priorities. I am not sure how this will help me ** though, because ** if the primary link goes down, the data can not travel back because the ** primary link is down - we had this problem before when we were ** blackholed by ** a previous ISP's BGP routing tables). ** So my question is how can I cheaply achieve a redundant link? ** Cheers ** craig ** To Unsubscribe: send mail to majordomo@FreeBSD.org ** with "unsubscribe freebsd-isp" in the body of the message ** -- ** Michael Hallgren, http://m.hallgren.free.fr ** ** ** ** ** To Unsubscribe: send mail to majordomo@FreeBSD.org ** with "unsubscribe freebsd-isp" in the body of the message ** ** To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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