Date: Fri, 13 Nov 1998 23:52:16 +0100 From: Jesper Skriver <jesper@skriver.dk> To: User MAT <mat@blondie.ottawa.cc> Cc: Leif Neland <root@swimsuit.internet.dk>, freebsd-isp@FreeBSD.ORG Subject: Re: two routers back to back: Do they need real ip-adresses? Message-ID: <19981113235216.A28029@skriver.dk> In-Reply-To: <Pine.BSF.4.05.9811132029500.17115-100000@blondie.ottawa.cc>; from User MAT on Fri, Nov 13, 1998 at 08:37:13PM -0500 References: <19981113090526.A10967@skriver.dk> <Pine.BSF.4.05.9811132029500.17115-100000@blondie.ottawa.cc>
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> > You can't use unnumbered on broadcast media aka ethernet, so you need to > > assign addresses to the interfaces, but these can be RFC1918 addresses, > > that is if your ISP is willing to accept this. > > If you read the quote below, the third paragraph states that private IP's > cannot have direct contact to the Internet. So IHO, the answer is no, you > have to use a Globally un-Ambigous address. --quote-- Private hosts can communicate with all other hosts inside the enterprise, both public and private. [HERE-> However, they cannot have IP connectivity to any host outside of the enterprise. [<- HERE] --quote-- What is ment here is that the host which is assigned RFC1918 addresses cannot communicate with "the Internet", there is nothing wrong with having RFC1918 addresses on interfaces that only has "internal" connectivity. Here in Denmark the national school backbone is running RFC1918 addresses on it's routers, no problem, as long as all hosts that need Internet connectivity uses real addresses ... I also know that several larger US NSP's use RFC1918 in their backbones ... /Jesper -- Jesper Skriver (JS4261-RIPE), Network manager Tele Danmark DataNet, IP section (AS3292) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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